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Federal Pacific NF631090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Federal Pacific
NF631090
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NF631090
Quantity
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Federal Pacific NF631090 - 90A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty industrial applications, the Federal Pacific NF631090 provides reliable 90-amp thermal-magnetic protection. This legacy N-frame breaker ensures continuous operation in older commercial facilities. The unit installs into classic Federal Pacific NF panelboards without requiring aftermarket adapters. It acts as a direct replacement for original equipment, matching the exact dimensions of the UBIF290N. With a 25kAIC rating at 240VAC, it safely clears severe electrical faults.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NF631090-R |
| Series | NF |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC |
| Frame Type | HF |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific NF Panelboards |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Undervoltage Release, Auxiliary Switch, Bell Alarm, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5.1, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40°C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
8 answersWhich panelboards are compatible with the NF631090 circuit breaker?
This bolt-on molded case circuit breaker is designed specifically for installation in legacy Federal Pacific NF series panelboards. It is not interchangeable with FPE residential Stab-Lok load centers.
What wire sizes are accepted by the lugs on the NF631090?
The factory terminal lugs accept wire gauges from 14 AWG up to 1/0 AWG. Always verify that the wire material and size match the requirements of your specific application and local electrical codes.
What are the interrupting capacity ratings for the NF631090?
The breaker provides a 25 kAIC rating at 240V AC, an 18 kAIC rating at 480V AC, and a 14 kAIC rating at 600V AC. These ratings dictate the maximum fault current the breaker can safely clear at each respective voltage.
Does the NF631090 feature adjustable trip settings?
No, this breaker utilizes a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It provides standard long-time and instantaneous (LI) protection without field adjustability.
Is the Federal Pacific NF631090 a current production breaker?
Federal Pacific Electric (FPE) is no longer in business. The NF631090 is a legacy molded case circuit breaker used primarily for maintaining and servicing existing FPE NF panelboards in commercial and industrial facilities.
How does the NF631090 mount into the panelboard?
It features a bolt-on connection, meaning it must be mechanically fastened directly to the panelboard busbar. This provides a secure connection that is highly resistant to vibration.
Are there specific safety considerations when replacing a Federal Pacific NF631090?
Because FPE equipment is legacy, always verify that the panelboard busbar is in good condition and free of pitting or thermal damage before bolting on the replacement breaker. Installation must be performed by a qualified electrician.
What frame type does the NF631090 belong to?
This 90-amp breaker is built on the Federal Pacific HF frame and belongs to the broader N Frames group. It is designed for industrial and commercial distribution applications.
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