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What is the catalog number for a field installable 120 Vac undervoltage trip for an LA or LH frame, Series 4 breaker?

Is there a field installable undervoltage trip, 120 V, for the LA/LH style breakers?

Product Line:
Molded Case Circuit Breakers

Legacy L-frame Circuit Breakers

LA11121 is the field installable, 120 Vac undervoltage trip for the LA/LH style breakers. 
It will only work on series 4 or later LA/LH breakers. There is no field installable undervoltage trip for LA/LH breakers earlier than series 4.
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