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  • Product Description

    Siemens 3RH1122-1AB00 AC Control Relay with 2 N.O. and 2 N.C. contacts and a 24v50/60Hz coil

    Click here to view a PDF spec file for this Siemens 3RH Control Relay

    “Safety” Control Relays

    Safety rated control relays are required to have positively driven contact elements according to IEC 60947-5-1 Annex L. Positively driven contact elements are a combination of NO auxiliary contacts and NC auxiliary contacts whose construction prevents them from being closed simultaneously. In some industries, such as automotive, requirements have been established that a safety rated control relays must also have permanently mounted auxiliary contact blocks. See page 2/70 for Control Relays with permanently mounted auxiliary contacts.

    Siemens Control Relays for “Safety” applications:

    All SIRIUS 3RH1 control relays (with at least 1 NC contact) meet or exceed the criteria for "Safety Control Relays” according to IEC60947-5-1 Annex L. This is true for the basic 3RH relay with or without an additional auxiliary contact block.

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