Designed for heavy-duty applications, the Federal Pacific NFJ631225R is a 225A, 3-pole molded case circuit breaker. It delivers reliable thermal-magnetic protection for commercial facilities. This bolt-on unit is engineered as an exact replacement for legacy Federal Pacific NFJ panelboards. Maintaining the original N-frame specs guarantees a seamless installation without modifying hardware.
What panelboards are compatible with the NFJ631225R circuit breaker?
This bolt-on molded case circuit breaker is designed specifically for installation in legacy Federal Pacific NFJ panelboards.
What does the R in the NFJ631225R catalog number indicate?
The R designates that this breaker is equipped with a rotary style handle mechanism, which is often required for specific enclosure or motor control center applications.
What wire sizes are accepted by the load side lugs on this 225A breaker?
The included load side lug terminals accommodate wire gauges ranging from 4 AWG to 300 kcmil.
Can the trip settings on the NFJ631225R be adjusted in the field?
No, this breaker features a fixed, non-interchangeable thermal-magnetic trip unit. The long-time and instantaneous (LI) protection functions cannot be adjusted.
Are there direct modern replacements for the Federal Pacific NFJ631225R?
Because Federal Pacific Electric (FPE) is a legacy brand, there are no direct modern drop-in replacements. You must use an exact NFJ frame breaker to fit existing FPE panelboard hardware without modification.
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Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.