Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Federal Pacific NEF431090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Federal Pacific
NEF431090
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF431090
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Federal Pacific NEF431090 - 90A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
100A 3 Pole Molded Case Circuit Breaker
100A 3 Pole Molded Case Circuit Breaker
Federal Pacific / AmericanNEF431100
100A 3 Pole Molded Case Circuit Breaker
Description
A drop-in replacement for aging commercial systems, the Federal Pacific NEF431090 is a 3-pole, 90A molded case circuit breaker. It provides reliable thermal-magnetic protection for older industrial facilities. Designed specifically for legacy Federal Pacific panelboards, this bolt-on MCCB eliminates the need for retrofitting or adapters. It restores power safely to existing enclosures. Rated at 14kAIC for 480VAC, this unit features non-interchangeable trip elements and reverse feed capability.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF431090-R |
| Series | NEF |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Panelboards |
| Wire Gauge | 4-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 4 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip, Reverse Feed, Vibration Tested |
Product FAQs
6 answersWhat panelboards accept the Federal Pacific NEF431090 circuit breaker?
This N-frame molded case circuit breaker is designed as a direct replacement for legacy Federal Pacific panelboards that utilize NEF series bolt-on breakers.
What wire sizes are supported by the terminals on the NEF431090?
The included load side lug terminals accept wire gauges ranging from 4 AWG up to 1/0 AWG.
What are the maximum fault current interrupting ratings for this breaker?
The NEF431090 provides a maximum interrupting capacity of 18kA at 240V AC, 14kA at 480V AC, and 10kA at 250V DC.
How does this breaker connect to the panelboard bus?
It utilizes a bolt-on mounting configuration, which provides a secure, vibration-resistant mechanical and electrical connection to the panelboard bus structure.
What type of trip protection does the NEF431090 provide?
It features a fixed thermal-magnetic trip unit that delivers both long-time overload and instantaneous short-circuit protection (LI functions). The trip elements are non-interchangeable.
Are Federal Pacific NEF series breakers still in active production?
Federal Pacific Electric (FPE) is no longer manufacturing new equipment. However, legacy NEF breakers remain available to service existing commercial and industrial FPE panelboards without the need for costly system retrofits.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
Search
Rating
6 reviews
- SCStephen C.Verified BuyerReviewingFederal Pacific NEF431030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/21/26Fpe 3 pole 30 amp breaker.
I ordered the breaker on Thursday and it was at my house for Saturday morning. Breaker is in pristine condition. A real bail out. Thank you.
- MRMichael R.Verified BuyerReviewingFederal Pacific NEF431040 - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Warehouse Air Compressor
Worked like a charm.
Thank you.
- DPDiana P.ReviewingFederal Pacific NEF433020 3 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars3/3/21Satisfied
Service was GREAT!!
- DJDavid J.ReviewingFederal Pacific / American NEF431100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/13/21This worked out great.
This worked out great.
- MWMark W.ReviewingFederal Pacific NEF421050 - 50A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/17/19Great service & pricing
Superbreakers did a great job for us. We called and asked if the breakers were actually in their possession. Withing 30 minutes they called us back (which is rare these days), and we got our breakers the next morning.