Part of the legacy N-Frame series, the NJL632175 is a 175A, 3-pole molded case circuit breaker engineered for commercial facilities. It delivers dependable long-time and instantaneous (LI) protection to safeguard infrastructure. Designed for unit-mount installations, this breaker fits into Federal Pacific switchboards. It serves as an exact substitute for the NJL631175, ensuring a proper fit without modifications. It features a non-interchangeable trip unit and is rated 30 kAIC at 480VAC.
What enclosures are compatible with the NJL632175 circuit breaker?
This N-frame breaker is designed specifically for installation in legacy Federal Pacific switchboards and panelboards.
What wire sizes and materials are supported by the terminals on this breaker?
The included lugs accommodate wire gauges from 6 AWG to 300 kcmil and are rated for use with both aluminum and copper conductors.
How is this breaker mounted within the panel?
The NJL632175 utilizes a bolt-on connection for secure unit mounting in compatible Federal Pacific equipment.
What type of protection does the LI trip function provide?
The LI code indicates that the thermal magnetic trip unit delivers both Long-Time overload protection and Instantaneous short-circuit protection.
Can the trip settings on the NJL632175 be adjusted?
No, this breaker features fixed thermal and fixed magnetic trip elements, meaning the trip thresholds cannot be altered in the field.
Why is this breaker classified as a legacy MCCB?
Federal Pacific is no longer an active manufacturer. This breaker serves as a direct replacement to maintain existing commercial and industrial electrical systems without requiring a full panelboard upgrade.
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Customers rate this product 3.0 out of 5 based on 1 review.