Siemens SIRIUS 3SK1

Use of removable terminals for 3SK1
The f
ollowing removable terminals are available for safety relays for the prewiring of terminals
in the control cabinet or for terminal replacement:
3SK1 safety relays Screw terminals
2-pin 3-pin 2-pin
3ZY1121-1BA00 3ZY1131-1BA00 3ZY1122-1BA00
3SK1 Advanced basic units
3SK1111 --- ✓ ---
3SK1112 ✓ --- ---
3SK1120 --- ✓ ---
3SK1121 --- ✓ ---
3SK1122 ✓ bottom ✓ top ---
Output expansions
3SK1211 ✓ --- ---
3SK1213 --- --- ---
3RQ1 --- --- ✓
Input expansions
3SK1220 --- ✓ top ---
3SK1230 ✓ bottom --- ---
3SK1 safety relays Spring-type terminals (push-in)
2-pin 3-pin 2-pin
3ZY1121-2BA00 3ZY1131-2BA00 3ZY1122-2BA00
3SK1 Advanced basic units
3SK1111 --- ✓ ---
3SK1112 ✓ --- ---
3SK1120 --- ✓ ---
3SK1121 --- ✓ ---
3SK1122 ✓ bottom ✓ top ---
Output expansions
3SK1211 ✓ --- ---
3SK1213 --- --- ---
3RQ1 --- --- ✓
Input expansions
3SK1220 --- ✓ top ---
3SK1230 ✓ bottom --- ---
Accessories
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
228
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005