Siemens 3RV1901-1E auxiliary contact block for the Sirius 3RV Motor Starter Protectors. This is a front mounted auxiliary contact with 1 NO and 1 NC contacts.
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The 3RV1 MSP’s have three main contact elements. In order to achieve maximum flexibility, auxiliary switches, signalling switches, auxiliary releases and isolator modules can be supplied separately. These components can be fitted as required on the switches without using tools.
An auxiliary contact block can be inserted transversely on the front. The overall width of the MSP’s remains unchanged.