5.2.6.3 Design
① Top cover ap
② Top cover ap; internal inscription
③ Display LEDs
④ DIP switch
⑤ SET/RESET button
⑥ Bottom cover ap
⑦ Bottom cover ap; internal inscription
⑧ DataMatrix code
⑨ Device identication label
5.2.6.4 Terminal assignment
Terminal Explanation
A1 +
A2 -
3SK1 / 3RQ1 devices
5.2 3SK1 Advanced
SIRIUS 3SK1 Safety Relays and 3RQ1 Positively-Driven Coupling Relays
Equipment Manual, 05/2021, A5E02526190021A/RS-AE/005 71