Built for commercial applications, the NES23100 is a 3-pole, 100A molded case circuit breaker from Federal Pacific. This legacy component provides reliable thermal-magnetic protection for existing electrical systems. Designed as an exact replacement, this plug-on MCCB mounts into Federal Pacific NE-S frame panelboards. It eliminates the need for retrofit adapters, ensuring a seamless installation process. Rated at 18kAIC at 240VAC, this breaker features fixed trip settings and is HACR rated.
Shunt Trip, Undervoltage Release, Auxiliary Switch, Bell Alarm, Padlock Attachment
Accessories
Load Side Lugs Included
Standards
UL 489, NEMA AB-1
Approval
UL
Temp Rating
40C
Construction Features
Common Trip, Non-Interchangeable Trip, Reverse Feed
Product FAQs
6 answers
Which panelboards accept the NES23100 circuit breaker?
This plug-on molded case circuit breaker is designed specifically for installation in legacy Federal Pacific NE-S frame panelboards used in commercial and industrial environments.
Can the NES23100 be used in direct current systems?
Yes, this breaker is rated for 250VDC applications, where it provides a 5kA interrupting capacity, in addition to its standard 240VAC rating.
What wire sizes are compatible with the load lugs on the NES23100?
The factory-installed lugs accept conductor sizes ranging from 1 AWG up to 3/0 AWG. Ensure you verify the appropriate wire material and torque specifications for your specific installation.
Do I need a retrofit kit to install this breaker in an older FPE panel?
No, the NES23100 is an exact legacy replacement that mounts directly into Federal Pacific NE-S frame panelboards, eliminating the need for aftermarket adapters or modification kits.
Are the trip settings on the NES23100 adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time thermal and instantaneous magnetic protection settings are factory-set and cannot be adjusted in the field.
How does the NES23100 mount into the panelboard?
It utilizes a plug-on mounting style specific to Federal Pacific NE-S frame panelboards, allowing for straightforward installation without bolted bus connections.
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