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Main switch application with EMERGENCY-STOP function in accordance with Machinery Directive IEC/EN 60204-1

When the molded case circuit breaker is in the OFF or TRIP position, all outgoing control cables from the circuit breaker are de-energized. The contacts of the EMERGENCY-STOP pushbutton are therefore also de-energized whenever the molded case circuit breaker is switched off.

EMERGENCY-STOP circuit with 3VA molded case circuit breaker and undervoltage release with leading NO contacts UVR (LNO)

NOTE

The undervoltage release with leading NO contacts UVR (LNO) must not be connected to phases L1 and L3 for 690 V AC applications. In this case, it is connected to phase L1 and the N conductor or to a control voltage supply up to maximum 480 V AC.

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3VA molded case circuit breaker

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Undervoltage release with leading NO contacts UVR (LNO)

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EMERGENCY-STOP (to be provided by customer)

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