可編程控制器的基本性能可用如下八條予以概括：
5.1工作速度
工作速度是指PLC的CPU執(zhí)行指令的速度及對(duì)急需處理的輸入信號(hào)的響應(yīng)速度。工作速度是PLC工作的基礎(chǔ)。速度高了，才可能通過(guò)運(yùn)行程序?qū)崿F(xiàn)控制，才可能不斷擴(kuò)大控制規(guī)模，才可能發(fā)揮PLC的多種多樣的作用。
PLC的指令是很多的。不同的PLC。指令的條數(shù)也不同。少的幾十條，多的幾百條。指令不同，執(zhí)行的時(shí)間也不同。但各種PLC總有一些基本指令，而且各種的PLC都有這些基本指令，故常以執(zhí)行一條基本指令的時(shí)間來(lái)衡量這個(gè)速度。這個(gè)時(shí)間當(dāng)然越短越好，已從微秒級(jí)縮短到零點(diǎn)微秒級(jí)。并隨著微處理器技術(shù)的進(jìn)步，這個(gè)時(shí)間還在縮短。
執(zhí)行時(shí)間短可加快PLC對(duì)一般輸入信號(hào)的響應(yīng)速度。從討論PLC的工作原理知，從對(duì)PLC加入輸入信號(hào)，到PLC產(chǎn)生輸出，最理想的情況也要延遲一個(gè)PLC運(yùn)行程序的周期。因?yàn)?/span>PLC監(jiān)測(cè)到輸入信號(hào)，經(jīng)運(yùn)行程序后產(chǎn)生的輸出，才是對(duì)輸入信號(hào)的響應(yīng)。不理想時(shí)，還要多延長(zhǎng)一個(gè)周期。當(dāng)輸入信號(hào)送入PLC時(shí)，PLC的輸入刷新正好結(jié)束，就是這種情況。這時(shí)，要多等待一個(gè)周期，PLC的輸入映射區(qū)才能接受到這個(gè)新的輸入信號(hào)。對(duì)一般的輸入信號(hào)，這個(gè)延遲雖可以接受，但對(duì)急需響應(yīng)的輸入信號(hào)，就不能接受了。對(duì)急需處理的輸人信號(hào)延遲多長(zhǎng)時(shí)間PLC能予以響應(yīng)，要另作要求。
為了處理急需響應(yīng)的輸入信號(hào)，PLC有種種措施。不同的PLC措施也不完全相同，提高響應(yīng)速度的效果也不同。一般的作法是采用輸入中斷，然后再輸出即時(shí)刷新，即中斷程序運(yùn)行后，有關(guān)的輸出點(diǎn)立即刷新，而不等到整個(gè)程序運(yùn)行結(jié)束后再刷新。
這個(gè)效果可從兩個(gè)方面來(lái)衡量：一是能否對(duì)幾個(gè)輸入信號(hào)作快速響應(yīng)；二是快速響應(yīng)的速度有多快。多數(shù)PLC都可對(duì)一個(gè)或多個(gè)輸入點(diǎn)作快速響應(yīng)，快速響應(yīng)時(shí)間僅幾個(gè)毫秒。性能高的、大型的PLC響應(yīng)點(diǎn)數(shù)更多。
工作速度關(guān)系到PLC對(duì)輸入信號(hào)的響應(yīng)速度，是PLC對(duì)系統(tǒng)控制是否及時(shí)的前提?？刂撇患皶r(shí)，就不可能準(zhǔn)確與可靠，特別是對(duì)一些需作快速響應(yīng)的系統(tǒng)。這就是把工作速度作為PLC第一指標(biāo)的原因。
5.2控制規(guī)模
控制規(guī)模代表PLC控制能力，看其能對(duì)多少輸入、輸出點(diǎn)及對(duì)多少路模擬進(jìn)行控制。
控制規(guī)模與速度有關(guān)。因?yàn)橐?guī)模大了，用戶程序也長(zhǎng)，執(zhí)行指令的速度不快，勢(shì)必延長(zhǎng)PLC循環(huán)的時(shí)間，也必然會(huì)延長(zhǎng)PLC對(duì)輸入信號(hào)的響應(yīng)。為了避免這個(gè)情況，PLC的工作速度就要快。所以，大型PLC的工作速度總是比小的要快。
控制規(guī)模還與內(nèi)存區(qū)的大小有關(guān)。規(guī)模大，用戶程序長(zhǎng)，要求有更大的用戶存儲(chǔ)區(qū)。同時(shí)點(diǎn)數(shù)多，系統(tǒng)的存儲(chǔ)器輸入、輸出的信號(hào)區(qū)（輸入輸出繼電器區(qū)或稱輸入、輸出映射區(qū)）也大。這個(gè)區(qū)大，相應(yīng)地內(nèi)部器件（解釋見(jiàn)后）也要增多，這些都要求有更大的系統(tǒng)存儲(chǔ)區(qū)。
控制規(guī)模還與輸入、輸出電路數(shù)有關(guān)。如控制規(guī)模為1024點(diǎn)，那就得有1024條I/O電路。這些電路集成于I/O模塊中，而每個(gè)模塊有多少路的I/O點(diǎn)總是有數(shù)的。所以，規(guī)模大，所使用的模塊也多。
控制規(guī)模還與PLC指令系統(tǒng)有關(guān)。規(guī)模大的PLC指令條數(shù)多，指令的功能也強(qiáng)，才能應(yīng)付對(duì)點(diǎn)數(shù)多的系統(tǒng)進(jìn)行控制的需要。
控制規(guī)模是對(duì)PLC其它性能指標(biāo)起著制約作用的指標(biāo)；也是PLC劃分為微、小、中、大和特大型
5.3組成模塊
PLC的結(jié)構(gòu)雖有箱體及模塊式之分，但從質(zhì)上看，箱體也是模塊，只是它集成了更多的功能。在此，不妨把PLC的模塊組成當(dāng)作所有PLC的結(jié)構(gòu)性能。
這個(gè)性能含義是指某型號(hào)PLC具有多少種模塊，各種模塊都有什么規(guī)格，并各具什么特點(diǎn)。
一般講，規(guī)模大的PLC，檔次高的PLC模塊的種類也多，規(guī)格也多，反映它的特點(diǎn)的性能指標(biāo)也高。但模塊的功能則單一些。相反，小型PLC、檔次低的PLC模塊種類也少，規(guī)格也少，指標(biāo)也低。但功能則多樣些，以至于集成為箱體。
組成PLC的模塊是PLC的硬件基礎(chǔ)，只有弄清所選用的PLC都具有那些模塊及其特點(diǎn)，才能正確選用模塊，去組成一臺(tái)完整的PLC，以滿足控制系統(tǒng)對(duì)PLC的要求。
常見(jiàn)的PLC模塊有：
CPU模塊，它是PLC的硬件核心。PLC的主要性能，如速度、規(guī)模都由它的性能來(lái)體現(xiàn)。
電源模塊，它為PLC運(yùn)行提供內(nèi)部工作電源，而且，有的還可為輸入信號(hào)提供電源。
I/O模塊，它集成了I/O電路，并依點(diǎn)數(shù)及電路類型劃分為不同規(guī)格的模塊。
內(nèi)存模塊，它主要存儲(chǔ)用戶程序，有的還為系統(tǒng)提供輔加的工作內(nèi)存。在結(jié)構(gòu)上內(nèi)存模塊都是附加于CPU模塊之中。
底板、機(jī)架模塊，它為PLC各模塊的安裝提供基板，并為模塊間的聯(lián)系提供總線。若干底板間的聯(lián)系有的用接口模塊，有的用總線接口。不同廠家或同一廠家但不同類型的PLC都不大相同。
箱體式的小型PLC的主箱體就是把上述幾種模塊集成在一個(gè)箱體內(nèi)的，并依可能提供I/O點(diǎn)數(shù)的多少，劃分為不同的規(guī)格。
箱體式的PLC還有I/O擴(kuò)展箱體，它不含CPU，僅有電源及I/O單元的功能。擴(kuò)展箱體也依I/O點(diǎn)數(shù)的多少劃分有不同的規(guī)格。
除上述模塊，PLC還有特殊的或稱智能或稱功能模塊。如A/D（模入）模塊、D/A（模出）模塊、高速計(jì)數(shù)模塊、位控模塊、溫度模塊等等。這些模塊有自己的CPU，可對(duì)信號(hào)作預(yù)處理或后處理，以簡(jiǎn)化PLC的CPU對(duì)復(fù)雜的程控制量的控制。智能模塊的種類、特性也大不相同，性能好的PLC，這些模塊種類多，性能也好。
通訊模塊，它接人PLC后，可使PLC與計(jì)算機(jī)，或PLC與PLC進(jìn)行通訊，有的還可實(shí)現(xiàn)與其它控制部件，如變頻器、溫控器通訊，或組成局部網(wǎng)絡(luò)。通訊模塊代表PLC的組網(wǎng)能力，代表著當(dāng)今PLC性能的重要方面。
掌握PLC性能，一定要了解它的模塊，并通過(guò)了解模塊的性能，去弄清楚PLC的性能。
除了模塊，PLC還有外部設(shè)備。
盡管用PLC實(shí)現(xiàn)對(duì)系統(tǒng)的控制可不用外部設(shè)備，配置好合適的模塊就行了。然而，要對(duì)PLC編程，要監(jiān)控PLC及其所控制的系統(tǒng)的工作狀況，以及存儲(chǔ)用戶程序、打印數(shù)據(jù)等，就得使用PLC的外部設(shè)備。故一種PLC的性能如何，與這種PLC所具外部設(shè)備豐富與否，外部設(shè)備好用與否直接相關(guān)。
PLC的外部設(shè)備有四大類：
編程設(shè)備：簡(jiǎn)單的為簡(jiǎn)易編程器，多只接受助記將編程，個(gè)別的也可用圖形編程（如日本東芝公司的EX型可編程控制器）。復(fù)雜一點(diǎn)的有圖形編程器，可用梯形圖語(yǔ)編程。有的還有專用的計(jì)算機(jī)，可用其它高級(jí)語(yǔ)編程。編程器除了用于編程，還可對(duì)系統(tǒng)作一些設(shè)定，以確定PLC控制方式，或工作方式。編程器還可監(jiān)控PLC及PLC所控制的系統(tǒng)的工作狀況，以進(jìn)行PLC用戶程序的調(diào)試。
監(jiān)控設(shè)備：小的有數(shù)據(jù)監(jiān)視器，可監(jiān)視數(shù)據(jù)；大的還可能有圖形監(jiān)視器，可通過(guò)畫(huà)面監(jiān)視數(shù)據(jù)。除了不能改變PLC的用戶程序，編程器能做的它都能做，是使用PLC很好的界面。性能好的PLC，這種外部設(shè)備已越來(lái)越豐富。
存儲(chǔ)設(shè)備：它用于永久性地存儲(chǔ)用戶數(shù)據(jù)，使用戶程序不丟失。這些設(shè)備，如存儲(chǔ)卡、存儲(chǔ)磁帶、軟磁盤(pán)或只讀存儲(chǔ)器。而為實(shí)現(xiàn)這些存儲(chǔ)，相應(yīng)的就有存卡器、磁帶機(jī)、軟驅(qū)或ROM寫(xiě)入器，以及相應(yīng)的接口部件。各種PLC大體都有這方面的配套設(shè)施。
輸入輸出設(shè)備：它用以接收信號(hào)或輸出信號(hào)，便于與PLC進(jìn)行人機(jī)對(duì)話。輸入的有條碼讀入器，輸入模擬量的電位器等。輸出的有打印機(jī)、編程器、監(jiān)控器雖也可對(duì)PLC輸入信息，從PLC輸出信息，但輸入輸出設(shè)備實(shí)現(xiàn)人機(jī)對(duì)話更方便，可在現(xiàn)場(chǎng)條件下實(shí)現(xiàn)，并便于使用。隨著技術(shù)進(jìn)步，這種設(shè)備將更加豐富。
外部設(shè)備已發(fā)展成為PLC系統(tǒng)的不可分割的一個(gè)部分。它的情況，當(dāng)然是選用PLC必須了解的重要方面，所以也應(yīng)把它列為PLC性能的重要內(nèi)容。
5.4內(nèi)存容量
PLC內(nèi)存有用戶及系統(tǒng)兩大部分。用戶內(nèi)存主要用以存儲(chǔ)用戶程序，個(gè)別的還將其中的一部分劃為系統(tǒng)所用。系統(tǒng)內(nèi)存是與CPU配置在一起的。CPU既要具備訪問(wèn)這些內(nèi)存的能力，還應(yīng)提供相應(yīng)的存儲(chǔ)介質(zhì)。
用戶內(nèi)存大小與可存儲(chǔ)的用戶程序量有關(guān)。內(nèi)存大，可存儲(chǔ)的程序量大，也就可進(jìn)行更為復(fù)雜的控制。從發(fā)展趨勢(shì)看，內(nèi)存容量總是在不斷增大著。大型PLC的內(nèi)存容量可達(dá)幾十k，以至于一百多k。系統(tǒng)內(nèi)存對(duì)于用戶，主要體現(xiàn)在PLC能提供多少內(nèi)部器件。不同的內(nèi)部器件占據(jù)系統(tǒng)內(nèi)存的不同區(qū)域。在物理上并無(wú)這些器件，僅僅為RAM。但通過(guò)運(yùn)行程序進(jìn)行使用時(shí)，給使用者提供的卻實(shí)實(shí)在在有這些器件。
內(nèi)存器件種類越多，數(shù)量越多，越便于PLC進(jìn)行種種邏輯量及模擬控制。它也是代表
PLC性能的重要指標(biāo)。
PLC內(nèi)部器件有：
I/O繼電器，或稱映射區(qū)。它與PLC所能控制的I/O點(diǎn)數(shù)及模擬量的路數(shù)直接相關(guān)。
內(nèi)部繼電器數(shù)，有的稱為標(biāo)志位數(shù)，代表著PLC的內(nèi)部繼電器數(shù)。它與I/O繼電器區(qū)相聯(lián)系著，有時(shí)與后者相聯(lián)系進(jìn)行處理。內(nèi)部繼電器多，便于PLC建立復(fù)雜的時(shí)序關(guān)系，以實(shí)現(xiàn)多種多樣的控制要求。一般講，內(nèi)部繼電器數(shù)比I/O繼電器要多得多。
有的內(nèi)部繼電器還可丟電保持，即它的狀態(tài)（ON或OFF）、PLC丟電后，靠?jī)?nèi)部電池仍予以保持。再上電后可繼續(xù)丟電前的狀態(tài)。保持繼電器可增強(qiáng)PLC控制能力，特別對(duì)記錄故障，故障排除后恢復(fù)運(yùn)行，更顯得有用。
定時(shí)器，可進(jìn)行定時(shí)控制。定時(shí)值可任意設(shè)定。定時(shí)器有多少，設(shè)定范圍有多大，設(shè)定值的分辨率又是多少，這些都代表定時(shí)器件的性能。
計(jì)數(shù)器，可進(jìn)行計(jì)數(shù)，到達(dá)某設(shè)定計(jì)數(shù)值可發(fā)送相應(yīng)信號(hào)。可進(jìn)行什么樣的計(jì)數(shù)，計(jì)數(shù)范圍多大，怎么設(shè)定，有多少計(jì)數(shù)器，則是PLC計(jì)數(shù)器性能的代表指標(biāo)。
數(shù)據(jù)存儲(chǔ)區(qū)，用以存儲(chǔ)工作數(shù)據(jù)。多以字、兩字或多字為單位予以使用，是PLC進(jìn)行模擬量控制，或記錄數(shù)據(jù)所必不可少的。這個(gè)存儲(chǔ)區(qū)的大小代表PLC的性能也是越大越好。趨勢(shì)也是越來(lái)越大。小型機(jī)也如此。如日本OMRON公司的CQM1機(jī)，其DM區(qū)就有6k字。而過(guò)去同是小型機(jī)的C60P的DM區(qū)才64個(gè)字。大型機(jī)的DM可達(dá)10K以至幾十K。
此外還有其它一些內(nèi)部器件，了解某PLC性能時(shí)，也都必須掌握它。
內(nèi)部器件也是PLC指令的操作數(shù)，不弄清楚是無(wú)法編程的。
5.5指令系統(tǒng)
PLC有多少條指令，各條指令又具有什么功能，是了解與使用PLC的重要方面。你不懂PLC指令怎么編程，沒(méi)有程序，PLC又怎么工作？
PLC的指令越來(lái)越多，越來(lái)越豐富。功能很強(qiáng)的指令，綜合多種作用的指令日見(jiàn)增多。
PLC的指令繁多，但主要的有這么幾種類型：
基本邏輯指令，用于處理邏輯關(guān)系，以實(shí)現(xiàn)邏輯控制。這類指令不管什么樣的PLC都總是有的。
數(shù)據(jù)處理指令，用于處理數(shù)據(jù)，如譯碼，編碼，傳送、移位等等。
數(shù)據(jù)運(yùn)算指令，用于進(jìn)數(shù)據(jù)的運(yùn)算，如十、一、X、/等，可進(jìn)行整形數(shù)計(jì)算，有的還可浮點(diǎn)數(shù)運(yùn)算；也可進(jìn)行邏輯量運(yùn)算，等等。
流程控制指令，用以控制程序運(yùn)行流程。PLC的用戶程序一般是從零地址的指令開(kāi)始執(zhí)行，按順序推進(jìn)。但遇到流程控制指令也可作相應(yīng)改變。流程控制指令也較多，運(yùn)用得好，可使程序簡(jiǎn)練，并便于調(diào)試與閱讀。
狀態(tài)監(jiān)控指令，用以監(jiān)視及記錄PLC及其控制系統(tǒng)的工作狀態(tài)，對(duì)提高PLC控制系統(tǒng)的工作可靠性大有幫助。
當(dāng)然，并不是所有的PLC都有上述那么多類的指令，也不是有的PLC僅有上述幾類指令。以上只是指出幾個(gè)例子，說(shuō)明要從哪幾個(gè)方面了解PLC指令，從中也可大致看出指令的多少及功能將怎樣影響PLC的性能。
除了指令，為進(jìn)行通訊，PLC還有相應(yīng)的協(xié)議與通訊指令或命令，這些也反映了PLC的性能。
5.6支持軟件
為了便于編制PLC程序，多數(shù)PLC廠家都開(kāi)發(fā)有關(guān)計(jì)算機(jī)支持軟件。
從本質(zhì)上講，PLC所能識(shí)別的只是機(jī)器語(yǔ)言。它之所以能使用一些助記符語(yǔ)言、梯形圖語(yǔ)言、流程圖語(yǔ)言，以至高級(jí)語(yǔ)言，全靠為使用這些語(yǔ)言而開(kāi)發(fā)的種種軟件。
助記符語(yǔ)言是最基本也是最簡(jiǎn)單的PLC語(yǔ)言。它類似計(jì)算機(jī)的匯編語(yǔ)言，PLC的指令系統(tǒng)就是用這種語(yǔ)言表達(dá)的。這種語(yǔ)言僅使用文字符號(hào)，所使用的編程工具簡(jiǎn)單，用簡(jiǎn)易編程器即可。所以，多數(shù)PLC都配備有這種語(yǔ)言。
梯形圖語(yǔ)言是圖形語(yǔ)言，它用類似于繼電器電路圖的符號(hào)表達(dá)PLC實(shí)現(xiàn)控制的邏輯關(guān)系。這種語(yǔ)言與符號(hào)語(yǔ)言有對(duì)應(yīng)關(guān)系，很容易互相轉(zhuǎn)換，并便于電氣工程師了解與熟悉，故用得很普遍，幾乎所有的PLC都開(kāi)發(fā)有這種語(yǔ)言。由于它是用圖形表達(dá)，小的編程器不好使用它，得有較大的液晶畫(huà)面的編程器，才能使用它。多數(shù)是在計(jì)算機(jī)對(duì)PLC編程時(shí)，才使用這種語(yǔ)言。
流程圖語(yǔ)言，它也是圖形語(yǔ)言，不過(guò)所用的符號(hào)不與電氣元件符號(hào)相似，而與計(jì)算機(jī)用的流程圖符號(hào)相似，便干計(jì)算機(jī)工作人員了解與熟悉。流程圖語(yǔ)言與符號(hào)語(yǔ)言也有一一對(duì)應(yīng)關(guān)系，只是它對(duì)應(yīng)的符號(hào)語(yǔ)言與梯形圖的對(duì)應(yīng)不一樣。熟悉計(jì)算機(jī)而又未從事過(guò)一般電氣工作的人員，樂(lè)于用這種語(yǔ)言對(duì)PLC編程。日本OMRON公司開(kāi)發(fā)的F系列機(jī)就是使用這種語(yǔ)言。
梯形圖與流程圖混合語(yǔ)言。這種語(yǔ)言，梯形圖與流程圖兩者兼用，可使PLC程序結(jié)構(gòu)化。它用流程圖把PLC程序劃分成若干結(jié)構(gòu)塊，并規(guī)范塊間的邏輯聯(lián)系。用梯形圖再確定塊中的種種量間的邏輯關(guān)系。這種混合語(yǔ)言有不同的實(shí)現(xiàn)方法，而且多用于大型的PLC的編程
高級(jí)語(yǔ)言，PLC編程也可以使用高級(jí)語(yǔ)言，如BASIC、C語(yǔ)言等?？梢栽?/span>DOS，也可在WINDOWS平臺(tái)上運(yùn)行。關(guān)鍵在于要把用高級(jí)語(yǔ)言編寫(xiě)的程序轉(zhuǎn)換成助記符語(yǔ)言，或直接轉(zhuǎn)換成PLC所能識(shí)別的機(jī)器語(yǔ)言。從根本上講，只要能實(shí)現(xiàn)這個(gè)轉(zhuǎn)換的，什么高級(jí)語(yǔ)言都可以。而編寫(xiě)這個(gè)轉(zhuǎn)換的軟件工作量很大，當(dāng)然應(yīng)由有關(guān)廠家開(kāi)發(fā)與提供。當(dāng)前不少PLC廠家已有提供。如GE－FANAC的PLC就提供有可用C語(yǔ)言編程的軟件。
再前進(jìn)一步，從理論上講使用自然語(yǔ)言編程也是完全可能的。只是要下力氣去開(kāi)發(fā)，以及市場(chǎng)有這個(gè)需要。
支持軟件不僅編制PLC程序需要，監(jiān)控PLC運(yùn)行，特別是監(jiān)視PLC所控制的系統(tǒng)的工作狀況也需要。所以，多數(shù)支持編程的軟件，也具有監(jiān)視PLC工作的功能。
此外，也有專用于監(jiān)控PLC工作的軟件，它多與PLC的監(jiān)視終端連用。
有的PLC廠家或第三方廠家還開(kāi)發(fā)了使用PLC的組態(tài)軟件，用以實(shí)現(xiàn)計(jì)算機(jī)對(duì)PLC控制系統(tǒng)監(jiān)控，以及與PLC交換數(shù)據(jù)。
PLC的用戶也可基于DOS或WINDOWS平臺(tái)開(kāi)發(fā)用于PLC控制系統(tǒng)的應(yīng)用軟件，以提高PLC系統(tǒng)自動(dòng)化及智能化水平。這方面的軟件已日益受到重視。
總之，為了用好PLC，PLC的支持軟件越來(lái)越豐富，性能也越來(lái)越好，其界面也越來(lái)越友好，也因此，它的情況如何，已成為評(píng)判PLC性能的指標(biāo)之一。
5.7可靠控制
為使PLC能可靠工作，在硬件與軟件兩個(gè)方面PLC廠家都采取了很多措施，對(duì)一些特殊可靠要求的PLC，還有相應(yīng)的特殊的措施，如熱備、冗余等等。這在介紹PLC的特點(diǎn)時(shí)已作了敘述?？煽看胧┑哪康氖窃黾?/span>PLC平均故障間隔時(shí)間、MTBF（MeanTimeBetweenFailure）及減少PLC的平均修復(fù)時(shí)間、MTTR（MeanTimeToRepair），以提高PLC的有效度A（Availability）。
A=MTBF/(MTBF+MTTR)
式中A--有效率
MTBF--平均故障間隔時(shí)間
MTTR--平均修復(fù)時(shí)間
當(dāng)然，A值越大越好，它可使PLC系統(tǒng)得到充分的利用，是為什么要使用PLC的重要指標(biāo)。而從上式可知，MTBF越大，MTTR越小，則A越大。所以，PLC的可靠措施都是圍繞提高MTBF及MTTR值進(jìn)行的。
鑒于可靠工作是PLC的重要特點(diǎn)，至關(guān)重要，故有關(guān)提高MTBF及降低MTTR的措施如何，以及PLC的MTBF與MTTR值也成為PLC性能的重要指標(biāo)。
5.8經(jīng)濟(jì)指標(biāo)
以上七條講的都是PLC的技術(shù)性能。其實(shí)，使用PLC，還要考慮經(jīng)濟(jì)指標(biāo)。經(jīng)濟(jì)是基礎(chǔ)，經(jīng)濟(jì)上不合算，不能帶來(lái)經(jīng)濟(jì)效益，使用PLC也就沒(méi)有基礎(chǔ)。所以，這個(gè)指標(biāo)也是重要的。經(jīng)濟(jì)指標(biāo)最簡(jiǎn)單的就是看價(jià)格。一般講，同樣技術(shù)性能的PLC，價(jià)格低其經(jīng)濟(jì)指標(biāo)就好
此外，還要看供貨情況，供貨不及時(shí)，影響使用，價(jià)格即使低，也不一定就好；看技術(shù)服務(wù)，資料不全，用戶出現(xiàn)問(wèn)題得不到技術(shù)支持也不好。
對(duì)經(jīng)濟(jì)指標(biāo)還要作綜合分析，要看使用了PLC能否帶來(lái)效益，然后，再分析使用哪家的PLC效益更好些
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WX118UC WESTINGHOUSE 1962 Vintage BLK POWER Transistor
WH CH Westinghouse Circuit Breaker KDB3400W 3P 400A KDB
WH CH Westinghouse Circuit Breaker KD3400K 3P 400A 600V
WH CH Westinghouse Circuit Breaker KD3400 3P 400A 600V
WH CH Westinghouse Circuit Breaker KD3400 3P 400A 600V
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WESTINGHOUSEZA0014TE5 MODEL AEFAZA 1HP AC MOTOR 575V 1800RPM 56FR 44920
WestinghouseSquare D Amptector I-A LSIG Variable Breaker Trip Unit
WestinghouseRBA-RDB-400 Power Fuse Refill
WestinghouseRBA400 Power Fuse Refill
WestinghouseKT3400T Thermal Magnetic Trip Unit
WestinghouseKT3400T Thermal Magnetic Trip Unit
WestinghouseCutler Hammer Circuit Breaker 35 AMP Cat HFD 65K WARRANTY
WESTINGHOUSEBFD51JCONTROL RELAY 250V DC 10 amp 32V DC COIL
WESTINGHOUSE972-879-C MW-THERMAL OVERLOAD RELAY
WESTINGHOUSE/TECO OPTIM HE PLUS PDH01502TE2 15HP 254T FRAME 3PH 3525RPM 43360
WESTINGHOUSE/SIEMENS FH15 OVERLOAD HEATER QTY 3
WESTINGHOUSE/SIEMENS FH15 OVERLOAD HEATER
WESTINGHOUSE/SIEMENS FH14 OVERLOAD HEATER
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Westinghouse/Cutler Hammer RE1020 120V 20A 1 Pole UL Listed
Westinghouse/Cutler Hammer QPGF1015 GFCI 15Ampere 1/Single Pole Circuit Breaker
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Westinghouse/Cutler Hammer GHB1020
WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HKB3225 3POLE 225AMP 600VAC
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WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER HFB3110 3POLE 110AMP 600VOLT
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WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FC3030 3POLE 30AMP 480VOLT
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WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER FB2030 2POLE 30AMP 600VOLT
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WESTINGHOUSE/CUTLER HAMMER CIRCUIT BREAKER F3070 3POLE 70AMP 600VOLT
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WESTINGHOUSE/ ATC FROST LR23056. U2-3.
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WESTINGHOUSE Z22A NSFP Z22A
WESTINGHOUSE Z22A Z STYLE 133A595GO4 GENERAL PURPOSE RELAY 25
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WESTINGHOUSE Z1893A80H07 NSFP Z1893A80H07
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WESTINGHOUSE Z.63 NSFP Z63
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WESTINGHOUSE Y-55 NSPP Y55
Westinghouse X49 Overload Relay Heater
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WESTINGHOUSE WT1C1 NSFP WT1C1
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WESTINGHOUSE WRSKL72 ELECTRICAL RESET WITH TRIP 53
WESTINGHOUSE WRSKL72 ELECTRICAL RESET WITH TRIP 53
WESTINGHOUSE WRSK24 NSFP WRSK24
WESTINGHOUSE WPONI USPP WPONI
WESTINGHOUSE WPBR1 ADVANTAGE CONTROL MODULE 20
WESTINGHOUSE WPBR1 ADVANTAGE CONTROL MODULE 20
WESTINGHOUSE WPBR1 ADVANTAGE CONTROL MODULE 20
Westinghouse WPBFV1 FV status only WPONI control uint for W200 starters
WESTINGHOUSE WPBFV1 Full Voltage status module
WESTINGHOUSE WM6S2G USPP WM6S2G
WESTINGHOUSE WM632FR USPP WM632FR
Westinghouse WLED internal trip indicator kit for W200 starters
WESTINGHOUSE WL922 USPP WL922
WESTINGHOUSE WL6080 NSFP WL6080
WESTINGHOUSE WL6012 NSFP WL6012
WESTINGHOUSE WL-5963 NSFP WL5963
WESTINGHOUSE WL-502A NSFP WL502A
Westinghouse WL-22809A Hollow Cathode Device Tube
Westinghouse WL-2 Trip Switch 796A209G06 Vintage NOS
Westinghouse WL-2 Trip Switch 796A209G06 Vintage NOS
WESTINGHOUSE WHUN361 30 AMPS 600V STAINLESS STEEL .
WESTINGHOUSE WHUN31 USPP WHUN31
WESTINGHOUSE WFP3150 150AMP PLUG-ON-CIRCUIT BREAKER $175
WESTINGHOUSE WFP3125 125AMP PLUG-ON-CIRCUIT BREAKER $150
WESTINGHOUSE WFP2200 USPP WFP2200
Westinghouse Weschler KA-241 Ammeter Style 291B461A26
WESTINGHOUSE WDIN NSFP WDIN
WESTINGHOUSE WCK63 USPP WCK63
WESTINGHOUSE WCK13 CONTACT KIT 3 POLE 20
WESTINGHOUSE WCK13 CONTACT KIT 3 POLE 20
WESTINGHOUSE WBASE34 UNIVERSAL BASE KIT
WESTINGHOUSE WATTHOUR METER CA-3 1956 OVAL VINTAGE
WESTINGHOUSE W-56 ELECTRICAL INTERLOCK
WESTINGHOUSE W-56 ELECTRICAL INTERLOCK
Westinghouse W31 auxiliary contact unstyle1A48174G10
Westinghouse W31 auxiliary contact kit 3 NO & 1 NC
WESTINGHOUSE W31 AUXILIARY CONTACT in good condition
WESTINGHOUSE W31 AUXILIARY CONTACT
WESTINGHOUSE W31 AUXILIARY CONTACT
WESTINGHOUSE W31 AUXILIARY CONTACT
WESTINGHOUSE W240M4CFCY7 NSFP W240M4CFCY7
WESTINGHOUSE W2200R NSFP W2200R
WESTINGHOUSE W22 USPP W22
WESTINGHOUSE W22 USPP W22
WESTINGHOUSE W210M3CFCY7 REVERSING STARTER 120VCOIL 50HP 90A 600V
WESTINGHOUSE W210M1CFCY7 USPP W210M1CFCY7
WESTINGHOUSE W210M1CFCY7 REVERSING STARTER 120VCOIL 10HP 27A 600V
WESTINGHOUSE W210M1CFCY7 NSPP W210M1CFCY7
WESTINGHOUSE W201MLCFC USPP W201MLCFC
WESTINGHOUSE W201K5CF NSFP W201K5CF
WESTINGHOUSE W201K1CF CONTACTOR 27 AMP 3 Ø 120V COIL 10 HP
WESTINGHOUSE W200S2CF NSFP W200S2CF
WESTINGHOUSE W200S1CF USPP W200S1CF
WESTINGHOUSE W200S1CF NSPP W200S1CF
WESTINGHOUSE W200S1CF NSFP W200S1CF
WESTINGHOUSE W200MLCFCY4Y7 USPP W200MLCFCY4Y7
WESTINGHOUSE W200MLCFC USPP W200MLCFC
Westinghouse W200MLCFC Starter STR1759
Westinghouse W200M4CFC non-reversing starter W200M4CFC
Westinghouse W200M4CFC non-reversing starter
Westinghouse W200M4CFC Nema Motor Starter 230v 460v 575v 100HP
WESTINGHOUSE W200M3CFC STARTER A.H12 120VCOIL 50HP 90A 600V
Westinghouse W200M3CFC non-reversing starter
Westinghouse W200M3CFC non-reversing starter
WESTINGHOUSE W200M2CFC USPP W200M2CFC
WESTINGHOUSE W200M1CFCY7 USPP W200M1CFCY7
WESTINGHOUSE W200M1CFC USPP W200M1CFC
WESTINGHOUSE W200M1CFC NSFP W200M1CFC
Westinghouse W-2 Rotary Switch 600V 20a 3629A04G01
WESTINGHOUSE W-2 NSFP W2
WESTINGHOUSE W192006 USPP W192006
WESTINGHOUSE W18 NSPP W18
Westinghouse W1654 Industrial Master Controller 330A336
WESTINGHOUSE W11T USPP W11T
WESTINGHOUSE W11T NSPP W11T
WESTINGHOUSE W/T ENCLOSURE MOTOR STARTER 1 OR 2 POLE S/PHASE TOGGLE SWITCH
WESTINGHOUSE W/STARTER-W200M2CFC & DISC. SWITCH
WESTINGHOUSE W/STARTER-W200M2CFC & DISC. SWITCH
WESTINGHOUSE W/H-5250C81G17 USPP WH5250C81G17
WESTINGHOUSE VZP3 USPP VZP3
WESTINGHOUSE VP2-840 USPP VP2840
WESTINGHOUSE VOLTMETER KA-241 0-600 V
WESTINGHOUSE VOLTAGE TRANSFORMER PPI 480/400Y120 7526A01G04
WESTINGHOUSE VISI-FLEX KIT COMPLETE 313C590G09
WESTINGHOUSE VISI-FLEX KIT COMPLETE 313C590G09
Westinghouse Visi-Flex Deion Switch Mod A 871014 600VAC 3p 60a NOS
WESTINGHOUSE VI4-841 NSFP VI4841
WESTINGHOUSE VFD
Westinghouse Veritrak RATIO SETPOINT INDICATOR 01-47495C01
Westinghouse Veritrak RATIO SETPOINT INDICATOR 01-47495C01
Westinghouse Veritrak RATIO SETPOINT INDICATOR 01-47495C01
WESTINGHOUSE VECTROL VTR2000-230/460-3 BOARD
Westinghouse Vari-Depth Shaft 47A4446G37
Westinghouse Vari-Depth Handle 504C323G03 w/ HDWE
Westinghouse Vari-Depth Handle 504C323G03 w/ HDWE
Westinghouse Vari-Depth Handle
Westinghouse Vari Depth Mechanism 930826 373D958G22
Westinghouse UVR RH MTG 24VDC NB breaker 4995D11G17
WESTINGHOUSE UVH1LT08K
WESTINGHOUSE UV RELEASE LA50197 FOR JA FRAME BREAKER
WESTINGHOUSE UV RELEASE LA50197 FOR JA FRAME BREAKER
Westinghouse undervoltage release assembly for KA Deion circuit breaker
Westinghouse undervoltage release 2 & 3 pole 800A MA breaker 457D727G01
Westinghouse undervoltage release MA 120V 457D727G05
WESTINGHOUSE UNBALANCED PHASE MODULE PUM 2608D22G18 NIB
WESTINGHOUSE ULM-1 NSFP ULM1
WESTINGHOUSE ULM UNDERLOAD MODULE MOR RELAY 2608D22G05 57297
Westinghouse Tyle A200 00-2 coils 110/120V 50/60hz style 505C806G01
WESTINGHOUSE TXK-1 USPP TXK1
WESTINGHOUSE TXK-1 TRANSFORMER KIT TXK1
WESTINGHOUSE TXK-1 TRANSFORMER KIT TXK1
WESTINGHOUSE TXK-1 NSFP TXK1
Westinghouse Two Polarized Automatic Plugs
WESTINGHOUSE TRN-1P-120AC USPP TRN1P120AC
Westinghouse Tri-Pac PB circuit breaker Fuse 1000PBPR14
Westinghouse Tri-Pac Collar Assemblies 624B100G02
Westinghouse Tri-Pac Breaker LAP3400PF 400 amp trip Nice Breaker
Westinghouse Tri-Pac Breaker LAP3400PF 150 amp trip Nice Breaker
Westinghouse Tri-Pac Breaker LAP3400F 400 amp trip Nice Breaker
Westinghouse Tri-Pac Breaker LA3400PF 400 amp trip Nice Breaker
WESTINGHOUSE TRIP UNIT ONLY PBF32000T SURPLUS
WESTINGHOUSE TRIP UNIT ONLY K2200T
WESTINGHOUSE TRIP UNIT LT3450T
WESTINGHOUSE TRIP UNIT HNB3900T
Westinghouse Trip Unit HKB3100T 3 Pole 30512
Westinghouse Trip Unit HKB3100T 3 Pole 30511
Westinghouse Trip Unit 3 Pole 400 AMP HLB3400T
Westinghouse Trip Breaker JB3225 600 VAC _ 225 Amp
Westinghouse Transber Unit PB3L120
Westinghouse Transber NIB Style 1F0895 MTCH.Volt 230/460 L Volt 115
WESTINGHOUSE TRANSFORMER KVA 2 SINGLE PHASE 2D46502H01 S20N11S02N
Westinghouse Transber Kit TXK-1 Dual Voltage
WESTINGHOUSE TRANSFORMER DIFF. RELAY 290B346A10B
WESTINGHOUSE TRANSFORMER DIFF. RELAY 290B346A10B
WESTINGHOUSE TRANSFORMER CAT. NO. 1F4016 MTC
WESTINGHOUSE TRANSFORMER CAT. NO 1F2942 MTC
Westinghouse Transber 500 kVa 480 x 600 88B0326
Westinghouse Transber 3kVA 240 x 480 120/240 V 3 kVA
WESTINGHOUSE TRANSFORMER 230/460 HV 115 LV 0.100 KVA MODEL 112D631H03
Westinghouse Transber 1F4749 100kva 60hz WARRANTY
WESTINGHOUSE TRANSFORMER EMP- 0.6 480V
WESTINGHOUSE TRANSFORMER EMP- 0.6 288V
WESTINGHOUSE TR5-1A NSPP TR51A
WESTINGHOUSE TR0N-2P120A USPP TR0N2P120A
WESTINGHOUSE TME DELAY RELAY
WESTINGHOUSE TME DELAY RELAY
WESTINGHOUSE TM1 NSPP TM1
Westinghouse TK Relay
Westinghouse TK Relay
WESTINGHOUSE TK RELAY 575V 60 CYCLE STYLE 1096878-C 43587
Westinghouse Time Relay 146567 AM WARRANTY
Westinghouse TI-2 current overload relay 572D719G01
Westinghouse TI-2 current overload relay 572D719G01
Westinghouse Thyristor Breaker 179C368G14 600VAC 50 Amp 646
WestingHouse Thermostat 0-100F 9123-R0010-7525
Westinghouse Thermal Overload Relay Non Compensated 3 Pole NEMA AN13P NIB
Westinghouse Thermal Overload Relay Non Compensated 3 Pole NEMA AN13P NIB
Westinghouse Thermal overload relay MW-21 MW21
Westinghouse Thermal overload relay MW-11 MW11
Westinghouse Thermal overload relay MW FOR MW31 & MW41
WESTINGHOUSE THERMAL OVERLOAD RELAY CATAN21A NIB
WESTINGHOUSE THERMAL OVERLOAD RELAY CATAA13P
Westinghouse Thermal Overload Relay CatAA11PB. NOS
Westinghouse Thermal Overload Relay AN23A 3 pole 2
WESTINGHOUSE THERMAL OVERLOAD RELAY AN11P MODEL 1P S 371D596G11 NIB
Westinghouse Thermal Overload Relay AN11A
Westinghouse Thermal Overload Relay AA43P 3 Pole 4
Westinghouse Thermal Overload Relay AA43P 3 Pole 4
WESTINGHOUSE THERMAL OVERLOAD RELAY AA23P CONTROL CIRCUIT 600 V C930715 MODEL J
WESTINGHOUSE THERMAL OVERLOAD RELAY AA13PB MODEL J
WESTINGHOUSE THERMAL OVERLOAD RELAY AA13PB
Westinghouse Thermal Overload Relay A200MICVC AA13A J
Westinghouse Thermal Overload Relay 5662D74G08 for A/200 Starter NIB
Westinghouse Thermal Overload Relay 3P NEMA CatAN13A . ZL-104
WESTINGHOUSE THERMAL OVERLOAD RELAY 30 AMP MAX MODEL BA13A
Westinghouse Thermal Overload Heating Element 96648
Westinghouse Thermal Overload Heating Element 96648
Westinghouse Thermal Overload Heaters FH83of 3
Westinghouse Thermal Overload Heaters FH29of 3
Westinghouse Thermal Overload Heater H54 WARRANTY
Westinghouse Thermal Overload Heater 81D1
Westinghouse Thermal Overload Heater 81D
Westinghouse Thermal Magnetic Trip Unit KT3350T
WESTINGHOUSE TG-440VAC USPP TG440VAC
WESTINGHOUSE TERMINAL LUGS TA800MA2 3/8"
WESTINGHOUSE TERMINAL ASSEMBLY CAT3TA400K
WESTINGHOUSE TBAT70 NSFP TBAT70
Westinghouse TAP-362-W Fusible Switch Plug In Unit 600V 60A 3PH 50HP
WESTINGHOUSE TAP-362H USPP TAP362H
Westinghouse TAP-362H Bus Duct 600V 60A 3PH
WESTINGHOUSE TAP362 NSPP TAP362
WESTINGHOUSE TAP362 NSFP TAP362
Westinghouse TAP-362 Fusible Switch 600V 60A 3PH
Westinghouse TAP-362 Busway Fusible Switch 600V 60A
Westinghouse TAP-362 Busway Fusible Switch 600V 60A
Westinghouse TAP-362 Bus Plug 60 amp 600V TAP362
WESTINGHOUSE TAP362 60AMP 600 VOLT BUSWAY FUSIBLE SWITCH STYLE 2528D48G03
WESTINGHOUSE TAP362 60AMP 600 VOLT BUSWAY FUSIBLE SWITCH STYLE 2528D48G03
WESTINGHOUSE TAP-361-H USPP TAP361H
WESTINGHOUSE TAP-361A USPP TAP361A
WESTINGHOUSE TAP-323 USPP TAP323
WESTINGHOUSE TAP-323 USPP TAP323
WESTINGHOUSE TAP322 USPP TAP322
Westinghouse Tap-322 Bus Duct Fusible Switch 240 Volt
WESTINGHOUSE TAP-322 60 AMP BUSWAY FBUS PLUG 3Ø 3 WIRE 240V
WESTINGHOUSE TAP321N TAP321 NEUTRAL 30 AMP 240V FUSIBLE BUS PLUG N250KV TAP421
WESTINGHOUSE TAP321N TAP321 NEUTRAL 30 AMP 240V BUS PLUG TAB N250KV TAP421
WESTINGHOUSE TAP-321-A USPP TAP321A
WESTINGHOUSE TAP321 USPP TAP321
Westinghouse Tap-321 Bus Duct Fusible Switch 240 Volt
WESTINGHOUSE TAP TAP364 200 AMP 600V FUSIBLE FBUSS BUS PLUG
WESTINGHOUSE TAP TAP364 200 AMP 600V FUSIBLE FBUSS BUS PLUG
WESTINGHOUSE TAP TAP362H 60 AMP 600V FUSIBLE FBUSS BUS PLUG LABEL
WESTINGHOUSE TAP TAP362H 60 AMP 600V FUSIBLE BUSS BUS PLUG TAB INSIDE
WESTINGHOUSE TAP TAP362 60 AMP 600V BUS PLUG N250KV TAP462
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP323N TAP323 NEUTRAL 100 AMP 240V BUS PLUG N250KV TAP423
WESTINGHOUSE TAP TAP322N TAP322 NEUTRAL 60 AMP 240V BUS PLUG N250KV TAP422
WESTINGHOUSE TAP TAP322N TAP322 NEUTRAL 60 AMP 240V BUS PLUG N250KV TAP422
WESTINGHOUSE TAD3 TERMINAL ADAPTER 5092A64G07NIB
WESTINGHOUSE TAD3 TERMINAL ADAPTER 5092A64G07NIB
WESTINGHOUSE TA800MA2 USPP TA800MA2
WESTINGHOUSE TA800MA2 NSPP TA800MA2
WESTINGHOUSE TA800MA2 NSFP TA800MA2
WESTINGHOUSE TA800MA2 ALUMINUM TERMINAL LUGS NIB
WESTINGHOUSE TA800MA1 USPP TA800MA1
WESTINGHOUSE TA700NB1 TWO CABLE TERMINALNIB
WESTINGHOUSE TA700MA1 TWO CABLE TERMINALNIB
WESTINGHOUSE TA600-LA NSFP TA600LA
WESTINGHOUSE TA400LAI USPP TA400LAI
WESTINGHOUSE TA400LAI TERMINALNIB
Westinghouse TA400LAI terminal double cable 4 MCM & 3/0-600 MCM cu-al for LA Br
WESTINGHOUSE TA300K TERMINAL ASSEMBLEY
WESTINGHOUSE TA300K NSFP TA300K
WESTINGHOUSE TA250KB USPP TA250KB
Westinghouse TA225LAI Terminal Single Cable 225AMP
WESTINGHOUSE TA225CA2 NSPP TA225CA2
WESTINGHOUSE TA225CA2 NSFP TA225CA2
WESTINGHOUSE TA-20 MW OVERLOAD 2 RELAY HEATER
Westinghouse TA175CAI Terminal Block Single Cable 225AMP
WESTINGHOUSE TA1201NB1 USPP TA1201NB1
WESTINGHOUSE TA1201NB1 NSPP TA1201NB1
WESTINGHOUSE T710083504BY NSPP T710083504BY
WESTINGHOUSE T700NB1 NSFP T700NB1
WESTINGHOUSE T700043504BY NSPP T700043504BY
WESTINGHOUSE T6E217 NSFP T6E217
WESTINGHOUSE T6E216 NSFP T6E216
WESTINGHOUSE T-6E197 USPP T6E197
WESTINGHOUSE T607121344BT USPP T607121344BT
WESTINGHOUSE T6070515348K USPP T6070515348K
WESTINGHOUSE T6070515348K NSPP T6070515348K
WESTINGHOUSE T600MA1 USPP T600MA1
WESTINGHOUSE T600MA1 NSPP T600MA1
WESTINGHOUSE T600LA USPP T600LA
WESTINGHOUSE T600LA USPP T600LA
WESTINGHOUSE T600LA NSPP T600LA
WESTINGHOUSE T600LA NSFP T600LA
WESTINGHOUSE T600042004BT SCR 400V 175AMP TO-93
WESTINGHOUSE T600042004BT SCR 400V 175AMP TO-93
Westinghouse T56A Tie Point
WESTINGHOUSE T520141304 USPP T520141304
WESTINGHOUSE T510065005-AB-8152 USPP T510065005AB8152
WESTINGHOUSE T510055007-AB-8208 USPP T510055007AB8208
WESTINGHOUSE T510055007-AB-8030 USPP T510055007AB8030
WESTINGHOUSE T507128054AQ USPP T507128054AQ
WESTINGHOUSE T507088054A POWER SCR THYRISTOR LOT
WESTINGHOUSE T507068084AA NSPP T507068084AA
WESTINGHOUSE T50088004AQ SCR LOT
WESTINGHOUSE T500158005AQ USPP T500158005AQ
WESTINGHOUSE T500078005AQ USPP T500078005AQ
WESTINGHOUSE T401LA USPP T401LA
Westinghouse T401LA terminal lugs
WESTINGHOUSE T401LA NSFP T401LA
WESTINGHOUSE T400DA2 USPP T400DA2
Westinghouse T400DA2 terminal lugs for DA breaker 2 cable 250MCM 3/0 CU
Westinghouse T400DA2 terminal 2 cable 250mcm 3/0 CU
WESTINGHOUSE T400DA2 NSFP T400DA2
Westinghouse T350DA terminal lug for DA breaker single cable 250-500MCM
WESTINGHOUSE T350DA TERMINAL J3
WESTINGHOUSE T350DA NSFP T350DA
Westinghouse T350DA Lug Circuit Breaker 7646
WESTINGHOUSE T300K LUG TERMINAL ASSEMBLY Q8-4
WESTINGHOUSE T250KB USPP T250KB
WESTINGHOUSE T225LA NSFP T225LA
WESTINGHOUSE T1F0890 USPP T1F0890
Westinghouse T1-2 current overload relay
Westinghouse T1-2 current overload relay
WESTINGHOUSE T100FB USPP T100FB
WESTINGHOUSE T100FB NSPP T100FB
WESTINGHOUSE SWITCH 3 POLE DE-ION PART 371D266G01 NSN 5930-00-072-8961
WESTINGHOUSE SVM3AC USPP SVM3AC
WESTINGHOUSE SV1-40 NSFP SV140
Westinghouse surge suppressor A 200 120v coil
WESTINGHOUSE STYLE 363A018H68 FUSE
Westinghouse std DC UV release for AB Deion circuit breaker LA & LAP 12VDC
Westinghouse Starterwith enclosure
WESTINGHOUSE STARTER P/N A210M3CB 11-10 L-23v
WESTINGHOUSE STARTER MCC BUCKET 100 AMP HMCP100
WESTINGHOUSE STARTER MCC BUCKET 100 AMP HMCP100
Westinghouse Starter Man A100K1C 3 Phase 3 Pole
Westinghouse Starter COVER 504C755H01
Westinghouse Starter contact Kit from A200M3CAC
WESTINGHOUSE STARTER CONTACT KIT 373B331G21
WESTINGHOUSE STARTER CONTACT KIT 373B331G21
WESTINGHOUSE STARTER CONTACT KIT 373B331G21
WESTINGHOUSE STARTER CONTACT KIT 373B331G09
Westinghouse Starter Coil 505C806G01 NIB
Westinghouse Starter Coil 505C633G01 120v
Westinghouse Starter coil 505C633G01 110-120vac Nice & Priced to move
Westinghouse Starter coil 505C633G01 110-120vac
WESTINGHOUSE STARTER CATALOGA200M3CW 90 AMP
Westinghouse Starter Bucket 30 Amp HMCP030H1C with Control Face
Westinghouse Starter A200MICAC With 120V Coil 505C806G01 WH NIB
Westinghouse Starter A200MACAC 00 3 pole coil
Westinghouse Starter A200M5CAC Model J 120V Coil
Westinghouse Starter A200M5CAC 2045A41G01
Westinghouse Starter A200M5CAC 2045A41G01
Westinghouse Starter A200M4CAC Model K 30691
Westinghouse Starter A200M4CAC 3445
Westinghouse Starter A200M3CACP
Westinghouse Starter A200M3CAC 90 Amps 3444
Westinghouse Starter A200M3CAC 90 Amps 3444
Westinghouse Starter A200M3CAC 90 Amp 30039
Westinghouse Starter A200M3CAC 90 Amp 14728
Westinghouse Starter A200M3CAC 90 Amp 14728
Westinghouse Starter A200M3CAC 90 Amp 14728
Westinghouse Starter A200M2CAC 23030
Westinghouse Starter A200M1CW 3 PH 27 Amp
Westinghouse Starter A200M1CACD 30044
Westinghouse Starter A200K2CACM 20764
Westinghouse Starter 1 Pole 240 AC/DC Flush Plate NR 5074 E
Westinghouse Starter 1 Pole 240 AC/DC Flush Plate NR 5074 E
Westinghouse Starter 1 Pole 240 AC/DC Flush Plate NR 5074 E
Westinghouse Start Pushbutton Only PBK-1 For A/200
WESTINGHOUSE STAINLESS 30 AMP SAFETY SWITCH
WESTINGHOUSE STAINLESS 30 AMP FUSIABLE SAFETY SWITCH
Westinghouse SSK3 Selector Switch 3 Position Maintained
WESTINGHOUSE SSK3 NSPP SSK3
WESTINGHOUSE SSK-1SELECTOR SWITCH KIT. G1-5.
WESTINGHOUSE SSK-1SELECTOR SWITCH KIT. G1-5.
WESTINGHOUSE SSK-11 USPP SSK11
WESTINGHOUSE SSK-11 NSPP SSK11
WESTINGHOUSE SSK-11 NSFP SSK11
WESTINGHOUSE SSK SELECTOR SWITCH. G1-11.
WESTINGHOUSE SS-56-3 NSPP SS563
WESTINGHOUSE SS-56-3 NSFP SS563
WESTINGHOUSE SS-56 USPP SS56
WESTINGHOUSE SQC-050 USPP SQC050
Westinghouse Speed Motor Controls A900M1DAC Mod J
Westinghouse SPB-65 circuit breaker SPB65 2000 amp COMPACT Frame EO Operator
Westinghouse SPB-65 circuit breaker SPB65 1600 amp with Shunt UV Spring release
WESTINGHOUSE SPB100-1600 USPP SPB1001600
Westinghouse SPB-100 circuit breaker SPB100 800 amp Style1269C13G06
Westinghouse SPB-100 circuit breaker 2000 SPB100 Large Frame Bolt-in
Westinghouse SPB-100 circuit breaker 2000 amp SPB100 Large Frame EO Operator
Westinghouse SPB 100 circuit breaker 2000 amp Tested1 year warranty SPB-100
Westinghouse Solid State Timer BST-ON
Westinghouse Solid State Timer BST-ON
Westinghouse Solid State Timer BST-ON
Westinghouse Solid State Timer AR 177C430G09 120-60
Westinghouse Snap Switch PF S-1625 900
WESTINGHOUSE SMP-62 DC MOTOR PROTECTION RELAY MOTOGARD SERIES 2.5-7.0A AMP 46229
WESTINGHOUSE SMP-62 DC MOTOR PROTECTION RELAY MOTOGARD SERIES 2.5-7.0A AMP 46229
WESTINGHOUSE SMP-62 DC MOTOR PROTECTION RELAY MOTOGARD SERIES 2.5-7.0A AMP 46229
Westinghouse Smooth Stop Board PCB 7882C15G01
WESTINGHOUSE SMCU225KA OPERATING MECHANISM SURPLUS
WESTINGHOUSE SMCU150FD USPP SMCU150FD
WESTINGHOUSE SMCU150FD NSPP SMCU150FD
WESTINGHOUSE SMCU150FD NSFP SMCU150FD
WESTINGHOUSE SMCU100DS OPERATING MECHANISM DS SWITCH
Westinghouse SMCU100DS motor control switch 1265C50G01
Westinghouse SMCU100DS motor control switch 1265C50G01
Westinghouse SMCU100DS motor control switch 1265C50G01
Westinghouse SMCU100DS Motor Control A4
WESTINGHOUSE SMC400LA NSFP SMC400LA
WESTINGHOUSE SMC200-DS NSFP SMC200DS
WESTINGHOUSE SMC150FB NSFP SMC150FB
WESTINGHOUSE SMC100FB NSFP SMC100FB
WESTINGHOUSE SMC100DS NSFP SMC100DS
WESTINGHOUSE SMAN3FN4G1-C200MB44P1 USPP SMAN3FN4G1C200MB
WESTINGHOUSE SM225L NSFP SM225L
WESTINGHOUSE SM-18148-N3-1 NSFP SM18148N31
WESTINGHOUSE SM150R SAFETY HANDLE MECHANISM RIGHT HAND NIB
WESTINGHOUSE SM150R SAFETY HANDLE MECHANISM RIGHT HAND NIB
WESTINGHOUSE SLIDING PLATE HANDLE MECH. P/N 910919
WESTINGHOUSE SKB NSFP SKB
WESTINGHOUSE SKA NSFP SKA
WESTINGHOUSE SKA KA 225 AMP 600V BREAKER ENCLOSURE DISCONNECT
Westinghouse Single Contact Block Oil Tight OT1A NR NIB
Westinghouse Single Contact Block Oil Tight OT1A NR NIB
Westinghouse Siemens Programable Controller PC-2000-31 1A49184H03 6ES5-943-7UB11
WESTINGHOUSE SIEMENS NL590 6ES57888MA11 6ES5-788-8MA11
Westinghouse Shunt-Trip JA KA Breakers 2605D15G15
Westinghouse shunt trip for J K KL 440V S-940094 60A93G0G11
Westinghouse shunt trip assembly with cut off switch for MA circuit breaker
Westinghouse shunt trip assembly with cut off switch for LA circuit breaker
Westinghouse Shunt Trip 2606D57G19
WESTINGHOUSE SGS35 USPP SGS35
WESTINGHOUSE SG-293B255A26 NSPP SG293B255A26
WESTINGHOUSE SG USPP SG
WESTINGHOUSE SG 293B254A27 AUXILIARY RELAY Q6-5
WESTINGHOUSE SG 293B254A27 AUXILIARY RELAY Q6-5
WESTINGHOUSE SG 293B254A27 AUXILIARY RELAY Q6-5
Westinghouse SFB 100 Amp 600 Volt Load Center LOA1028
WESTINGHOUSE SF8D11S07N USPP SF8D11S07N
WESTINGHOUSE SF-43826-N3-1 OX-33 MILLIAMMETER
Westinghouse Servo Driver PC Card 2840A78G014QSD14 SUB Y
Westinghouse Series E 3 Pole 600VAC Molded Case Circuit Breaker E-7819 100A
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTORS
Westinghouse Series C Motor Circuit Protector HMCP HMCP007C0C 6630C87G05
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTOR CB5
Westinghouse Series C Motor Circuit Protector 30 Amps 3 Pole Line Load 931214-I
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTOR 3 AMP
WESTINGHOUSE SERIES C MOTOR CIRCUIT PROTECTOR HMCP
Westinghouse Series C Industrial Molded Case Circuit Breaker FDB3015L 15A
Westinghouse Series C Industrial Circuit BreakerFD3030L
Westinghouse Series C Industrial Circuit BreakerFD3030L
Westinghouse Series C Industrial Circuit Breaker KDB35k
Westinghouse Series C Industrial Circuit Breaker HFD3070L 70A 3POLES
Westinghouse Series C Industrial Circuit Breaker HFD 65K HFD3015L 15A 3POLE
Westinghouse Series C Industrial Circuit Breaker FD3015
WESTINGHOUSE SERIES C INDUSTRIAL CIRCUIT BREAKER EHD3050 NNB
Westinghouse Series C Industrial Circuit Breaker CB50
Westinghouse Series C Industrial Circuit Breaker CB400
Westinghouse Series C Industrial Circuit Breaker CB40
WESTINGHOUSE SERIES C INDUSTRIAL CIRCUIT BREAKER
WESTINGHOUSE SERIES C INDUSTRIAL BREAKER FDB3150L
Westinghouse Series C Ind. Circuit Breaker FD25K
WESTINGHOUSE SERIES C IND CIRCUIT BREAKER TFDB 14K
Westinghouse Series C Ind Circuit Breaker Frame HJD 65K HJD3250F 250A 3Pole
Westinghouse Series C HMCP Motor Circuit Protector
WESTINGHOUSE SERIES C HMCP CIRCUIT BREAKER HMCP003A0C
WESTINGHOUSE Series C HMCP 3 Amps 3 Pole 600VAC =
Westinghouse Series C EHD2025 Cutler Hammer Circuit Breaker
WESTINGHOUSE SERIES C CIRCUIT BREAKER HCPOO7CO
Westinghouse Series C Circuit Breaker 400 Amp 600 VAC 3 Pole KD3400F
Westinghouse Series C 800 Amp Circuit Breaker Cat. No. MD3800 600 VAC
WESTINGHOUSE SERIES C 400 AMP CIRCUIT BREAKER CAT KD3400F
WESTINGHOUSE SERIES C 100 AMP CIRCUIT BREAKER HMCP100R3S
Westinghouse Series A251 Reversing Contactor
WESTINGHOUSE SERIES 2100 FIVE STAR MOTOR CONTROL- MCC
Westinghouse Ser C HMCP Motor Circuit Breaker Protector 3 Pole 50 AMP HMCP050K2C
WESTINGHOUSE SEMI 1N4046-7209 NSFP 1N40467209
Westinghouse Seltronic Circuit Breaker 600 Amp 3 Pole 600 VAC LCA3600F
Westinghouse Selectronic 800amp Circuit Breaker MC3800F
Westinghouse Selector Switch OT2S1 2 Pos Maint. To Right 7860
WESTINGHOUSE SELECTOR SWITCH 373D113G24 ACCESS. KIT
WESTINGHOUSE SDSL344 USPP SDSL344
Westinghouse SDM33PB Open/Close/Stop/
Westinghouse SDM33PB Open/Close/Stop/
WESTINGHOUSE SD2PBUNIT NSFP SD2PBUNIT
WESTINGHOUSE SD2ELS USPP SD2ELS
WESTINGHOUSE SD-2-1246484 USPP SD21246484
WESTINGHOUSE SD-2-1246480 USPP SD21246480
WESTINGHOUSE SD2 PUSHBUTTON OPERATOR 59
WESTINGHOUSE SD1B0S NSFP SD1B0S
WESTINGHOUSE SD1A0S USPP SD1A0S
WESTINGHOUSE SD1A0S NSFP SD1A0S
WESTINGHOUSE SD1A0F NSPP SD1A0F
WESTINGHOUSE SCV-600MR CURRENT TRANSFORMER 6350C23H01 6005MR SURPLUS
WESTINGHOUSE SCV-600MR CURRENT TRANSFORMER 6350C23H01 6005MR SURPLUS
Westinghouse SCR Thyristor Diode T510055005AQ 8438
Westinghouse SCO Relay Style No. 6700D12 SCO-8
Westinghouse SCO Relay Style No. 6700D12 SCO-8
Westinghouse SCO Relay Style No. 6700D12 SCO-8
Westinghouse Schindler W250P2A 628D151-G17 Relays
Westinghouse Schindler Elevator 196C557H01 W459F Ferrule- 12 Pack
Westinghouse Safety/Knife Blade Switch 30Amp 240VAC 7.5 HP 3 PH3 HP 1 PH
Westinghouse Safety/Knife Blade Switch 30Amp 240VAC 7.5 HP 3 PH3 HP 1 PH
Westinghouse Safety Switches w/ Motor Starter 27 Amps
Westinghouse Safety Switch RHFN361 30A 600V
Westinghouse Safety Switch Panel/Motor Starter Combination PartA203R0AZB NIB
Westinghouse Safety Switch JHFN363C 100 Amp 28324
WESTINGHOUSE SAFETY SWITCH GF322N
Westinghouse Safety Switch Disconnect GUN323 100A 240V
WESTINGHOUSE SAFETY SWITCH DISCONNECT 200 AMP HUN364
WESTINGHOUSE SAFETY SWITCH 60A 240VAC HUN322
Westinghouse Safety Switch 60 Amp 240 VAC GFN422N
Westinghouse Safety Switch 60 Amp 240 VAC GFN422N
Westinghouse Safety Switch 30 amp 240v Stainless WHU321
Westinghouse Safety Switch 30 amp 240v Stainless WHU321
Westinghouse Safety Switch 100 Amp 240V 2 Pole
WESTINGHOUSE SAC-1 NSFP SAC1
WESTINGHOUSE S-966737 USPP S966737
WESTINGHOUSE S-943152D USPP S943152D
WESTINGHOUSE S-897933-D USPP S897933D
WESTINGHOUSE S-897930 USPP S897930
WESTINGHOUSE S-874128 USPP S874128
WESTINGHOUSE S844303 BRAKE COIL 76
WESTINGHOUSE S844303 BRAKE COIL 76
WESTINGHOUSE S844303 BRAKE COIL 76
WESTINGHOUSE S-844299 USPP S844299
WESTINGHOUSE S7282-29 USPP S728229
WESTINGHOUSE S-712498 USPP S712498
WESTINGHOUSE S-677C903G04 TRIP COIL 24VDC 58
WESTINGHOUSE S-677C903G04 TRIP COIL 24VDC 58
WESTINGHOUSE S-654239 USPP S654239
WESTINGHOUSE S-654213 USPP S654213
WESTINGHOUSE S-48N12S26A USPP S48N12S26A
Westinghouse S373D113G21 PUSHBUTTON KIT PBK11 START/ST
WESTINGHOUSE S-285637-D USPP S285637D
WESTINGHOUSE S-28449GG USPP S28449GG
WESTINGHOUSE S-28449GG USPP S28449GG
WESTINGHOUSE S-241967-D USPP S241967D
WESTINGHOUSE S20N11S0N IN A BOX
WESTINGHOUSE S-1764897 NSFP S1764897
WESTINGHOUSE S-1739610 USPP S1739610
WESTINGHOUSE S-1625564 USPP S1625564
WESTINGHOUSE S-1625564 NSPP S1625564
WESTINGHOUSE S1625563 USPP S1625563
WESTINGHOUSE S-1616103 USPP S1616103
WESTINGHOUSE S-1596633 USPP S1596633
WESTINGHOUSE S-151D786G08 USPP S151D786G08
WESTINGHOUSE S-151D786G04 USPP S151D786G04
WESTINGHOUSE S-1510786G08 1066
WESTINGHOUSE S-1491403 USPP S1491403
WESTINGHOUSE S-1491403 COIL Q2-3
WESTINGHOUSE S-1491403 COIL Q2-3
WESTINGHOUSE S-1491403 COIL Q2-3
WESTINGHOUSE S-1490646-B USPP S1490646B
Westinghouse S1490456 outboard L-60 Electrical Interlock
WESTINGHOUSE S-1470283 USPP S1470283
WESTINGHOUSE S-1470243-B USPP S1470243B
WESTINGHOUSE S-1470243-B USPP S1470243B
WESTINGHOUSE S-1470243 USPP S1470243
WESTINGHOUSE S-1470242-B USPP S1470242B
WESTINGHOUSE S-1470205-A USPP S1470205A
WESTINGHOUSE S-1470201B USPP S1470201B
WESTINGHOUSE S-1470201B NSPP S1470201B
WESTINGHOUSE S140D481G01 USPP S140D481G01
WESTINGHOUSE S-1406910-A USPP S1406910A
WESTINGHOUSE S-1406910 USPP S1406910
WESTINGHOUSE S-1344005 USPP S1344005
WESTINGHOUSE S-1303512-B USPP S1303512B
WESTINGHOUSE S-1289401 USPP S1289401
WESTINGHOUSE S-1289375 USPP S1289375
WESTINGHOUSE S-1186546 USPP S1186546
WESTINGHOUSE S1186539 USPP S1186539
WESTINGHOUSE S-1186538 USPP S1186538
WESTINGHOUSE S-1186537 USPP S1186537
WESTINGHOUSE S-1115662 USPP S1115662
WESTINGHOUSE S-1115655-C USPP S1115655C
WESTINGHOUSE S10N11S16N NSPP S10N11S16N
WESTINGHOUSE S10N06A26N NSFP S10N06A26N
WESTINGHOUSE S10N06A16N USPP S10N06A16N
WESTINGHOUSE S-1091349 USPP S1091349
WESTINGHOUSE S-1091345A USPP S1091345A
WESTINGHOUSE S-1033769 USPP S1033769
WESTINGHOUSE S-1018657-A USPP S1018657A
WESTINGHOUSE S-1014375C USPP S1014375C
westinghouse s-1 single pole switches 100 of them
westinghouse s-1 single pole switches 100 of them
WESTINGHOUSE S05DF15CC USPP S05DF15CC
WESTINGHOUSE S03DA48GC USPP S03DA48GC
WESTINGHOUSE S03CA12CA FULL WAVE SELENIUM RECTIFIER
Westinghouse RX-371 Voltmeter PG-23540-N3-3 0-500VDC
Westinghouse RV52BLSI RMS/R500 Digitrip 1232C97G02 Surplus
Westinghouse RT-458 Single Pole Breaker 20 Amp WOW
Westinghouse RT1747 Quicklag-C Breaker 15 Amp WOW
WESTINGHOUSE RRCM NSFP RRCM
