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Auxiliary contacts
3RU21 thermal overload relays are equipped with an NO contact for the "tripped" message
and an NC contact for disconnecting the contactor.
SIRIUS 3RU thermal overload relays / SIRIUS 3RB electronic overload relays
Manual, 09/2016, A5E03656507420A/RS-AB/003
Product description
3.4 3RU21 thermal overload relays
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