BASIC SWITCH WITH M12 CONNECTOR FOR POSITION SWITCH 3SE51 METAL ENCLOSURE 40 MM ACCORDING TO EN 50041. DEVICE CONNECTION WITH M12 CONNECTOR, 5-POLE, FIXED 1 NO/2 NC QUICK ACTION CONTACTS (2 NC AND PE CONNECTED) MAX. 125 V, 4 A PIN1=21, PIN4=22 PIN2=31, PIN5=32 PIN3=PE. SUITABLE FOR CONNECTION TO ALL SIMATIC ET200* COMPACT BLOCK I/O MODULES.