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Can a shunt trip (or aux switch or UVR) be installed on an MA or MH circuit breaker in the field?

Issue:
Shunt trip, UVR, Auxiliary contact installation in the field.

Product Line:
Legacy Circuit Breakers

Environment:
Electrical Distribution Equipment

Cause:
Replacement or field installable accessory.

Resolution:
If the breaker is Series 2 or later, a shunt trip (or aux switch or UVR) can be added. Series 2 breakers have removable covers on the left and right poles alongside the handle. The series number is near the catalog number on the faceplate. Depending on the age of the breaker it may say ``Series 2`` or ``S2.`` If the breaker was manufactured in 1985 or later it will be series 5.
An alarm switch (bell alarm) cannot be added in the field. This device is factory-installed only, and occupies the right pole.


CTA-ID : 2015157
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