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What is the difference between a PJA36120 and PJA36120U31A?

Product Line:
Circuit Breakers

Electrical Distribution Equipment

The PJA36120 does not have an adjustable current setting (long-time), and you cannot replace the trip unit. It is a thermal-magnetic equivalent.
The PJA36120U31A has adjustable long-time, and you can replace the trip unit, and upgrade to greater functionality if desired.
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