What is Mechanism-Operated Contacts (MOC) and how it works?

Issue:
How does the MOC work and how can it be identified?

Product Line:
Metal Clad, VR Breaker.

Environment:
MV Switchgear, Masterclad.

Cause:
Understanding how the standard Metal Clad offer works.

Resolution:
Mechanism-Operated Contacts are compartment-mounted, auxiliary contacts operated by the circuit breaker mechanism. Like circuit-breaker-mounted auxiliary contacts, they indicate whether the circuit breaker is in the open or closed position. They operate in both the connected and test/disconnected positions.
The MOC unit is mounted on the left side of the circuit breaker section. It is operated by a mechanism that is driven vertically by a roller on the left side of the circuit breaker.

Released for:Schneider Electric Canada