Auxiliary contacts
Auxiliary contacts signal a trip caused by overload, earth fault and short circuit current, as well as the manual switching off of the MCB.
Signal contacts
Signal contacts signal a trip caused by overload, earth fault and short circuit current, but there is no signal when the MCB is switched off manually
Undervoltage releases
For remote tripping of the MCB. In case of substained voltage the relay allows you to switch on the MCB. The undervoltage release trips the MCB if the supply voltage is interrupted or switched off. Suitable for emergency off circuits.
Shunt trips
For remote tripping of the MCB by applying a control voltage. The shunt trip contains a relay with an integrated contact that opens after the MCB has tripped, and interrupts the control voltage of the relays. This prevents the flow of current in case of substained control voltage.
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