| Product Type | Contactor Accessories |
Siemens Auxiliary Contact Block 3RH 11 31 - 1BF40 Contactor relays are switching devices for control and auxiliary circuits and are used to control and provide signal and interlock switching devices and switchgear boards. SIRIUS contactor relays have standard-compliant connection assignments and use a connection system that saves both time and money and meets field requirements.
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