Can a Micrologic Series B trip unit be changed or replaced?
Can a Micrologic series B (or older) trip unit on a legacy breaker be replaced, changed, or upgraded in the field?
The SE trip units can be changed by Field Services (see Supplemental Digest for availability).
The ground fault function cannot be added to or deleted from an SE breaker.
A replacement trip unit may be installed ONLY in the breaker it is identified for.
The other breakers with Micrologic Series B and earlier trip units CANNOT be replaced. These include LE, LX, LXI, ME, MX, NE, NX, PE, and PX type breakers.
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