Siemens Auxiliary switch block, screw, 4-pole, 1NO + 2NCProduct Overview The Siemens 3RH1911 1HA12 is a front mounted auxiliary switch block featuring 1 NO + 2 NC contacts, designed for motor contactors according to EN 50012 standards. This SIRIUS auxiliary switch block provides reliable switching capabilities for control circuit applications. Key Features: Contact Configuration: 1 NO + 2 NC contacts (1 normally open + 2 normally closed) Identification Number: 22 E according to EN 50012 Mounting Type:
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