MCCB Auxiliary

- Aug 08, 2018 -

1 SD auxiliary contacts are used with Compact NS or NSX circuit breakers, the common-point changeover contacts provide remote circuit breaker status information, they can be used for indication, electrical locking, relaying etc, comply with IEC 60947-5 international recommendations.

A single type of contact provide all the different indication functions:

■ SD (Trip Indication) indicates that the circuit breaker has tripped due to:

□ An overload;

□ A short circuit;

□ Operation of a voltage release;

□ Operation of the “Push to Trip” button;

□ Dis-connection when the device is On;