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How many spaces are required to mount a 2 pole switch neutral breaker with a shunt trip such as a QO220SWN1021?

Issue:
Spaces required to mount a SWN breaker with an accessory

Product Line:
Circuit Breakers

Environment:
QO Circuit Breakers

Resolution:
3 pole spaces are required to mount a 2-pole SWN breaker with an accessory such as a QO220SWN1021.
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