Siemens SIRIUS safety relay Output expansion 3SK1211-1BB40 4RO with relay enabling circuits: 4 safety-related NO contacts plus 1 NC relay signaling contact; supply voltage 24 V DC; screw‑terminal connection.
Siemens SIRIUS safety relay Output expansion 3SK1211-1BB40 4RO with relay enabling circuits: 4 safety-related NO contacts plus 1 NC relay signaling contact; supply voltage 24 V DC; screw‑terminal connection.
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