（4）污染等級(jí)：工業(yè)用按鈕開關(guān)周圍局部微觀環(huán)境的污染級(jí)為3級(jí)，只有在有效地使用防護(hù)外殼或密封等方法后才有可能降低污染等級(jí)至2級(jí)。
XKD-F11120120
XKD-F11122000
XKD-F11150000
XKD-F11150150
XKD-F11152150
XKD-F11152152
XKD-F11210
XKD-F1121000
XKD-F11210000
XKD-F11210210
XKD-F11220000
XKD-F11220220
XKD-F11222000
XKD-F11230130
XKD-F11240240
XKD-F11250
XKD-F11252000
XKD-F11252152
XKD-F11320
XKD-F1132000
XKD-F11320000
XKD-F11320220
XKD-F11320320
XKD-F11340
XKD-F11340000
XKD-F11340130
XKD-F11340240
XKD-F11340340
XKD-F11342000
XKD-F11350000
XKD-F11352000
XKD-F11420000
XKD-F11420320
XKD-F11420420
XKD-F11440000
XKD-F11440240
XKD-F11440340
XKD-F11440440
XKD-F11520000
XKD-F11540000
XKD-F11620000
XKD-F11620210
XKD-F11640000
XKD-F11820000
XKD-F11820820
XKD-F11840440
XKD-F12000320
XKD-F12000340
XKD-F12000420
XKD-F12000440
XKD-F12022110
XKD-F12120000
XKD-F12120120
XKD-F12122000
XKD-F12152000
XKD-F12210000
XKD-F12210210
XKD-F12220
XKD-F12220000
XKD-F12220220
XKD-F12230
XKD-F12230340
XKD-F12240000
XKD-F12240240
XKD-F12242000
XKD-F122440440
XKD-F12252252
XKD-F12320
XKD-F1232000
XKD-F12320000
XKD-F12320210
XKD-F12320220
XKD-F12320320
XKD-F12320420
XKD-F12320520
XKD-F12330
XKD-F12340
XKD-F1234000