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Will the addition of a shunt trip in a FA or FH 2-pole breaker increase the size of the breaker?

No. Adding one electrical accesory (shunt trip, UVR, aux. switch) to a 2-pole FA or FH breaker does not increase its dimensions, nor does it require a 3-pole module. Adding two accessories would require a three-pole breaker.

CTA-ID : 2031088
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