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Federal Pacific NEF431030 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Federal Pacific
NEF431030
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF431030
Quantity
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Federal Pacific NEF431030 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Delivering dependable long-time and instantaneous trip functions, this 30A molded case breaker serves commercial facilities. It features a non-interchangeable trip unit and supports reverse feed setups. Designed as an exact fit component, it mounts into legacy Federal Pacific NEF panelboards. Facility managers can also utilize the UBIF431030 as a verified substitute for this N-frame model. Rated 18kA at 240VAC and 14kA at 480VAC, it handles standard fault currents.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF431030-R |
| Series | NEF |
| Amperage | 30A |
| 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 NEF Panelboards |
| Wire Gauge | 14-2 AWG |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Bell Alarm |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed Suitable, Vibration Tested |
Product FAQs
8 answersWhich panelboards accept the NEF431030 circuit breaker?
This N-frame commercial breaker is designed strictly as an exact-fit replacement for legacy Federal Pacific NEF series panelboards.
Can I install the NEF431030 in a standard Stab-Lok residential load center?
No. This is an industrial molded case circuit breaker with a bolt-on connection, which is physically and electrically incompatible with standard FPE Stab-Lok load centers.
What protection is provided by the LI trip function?
The LI code indicates fixed thermal and magnetic protection elements. The long-time (L) bimetal element handles sustained thermal overloads, while the instantaneous (I) magnetic element clears high-level short circuits without intentional delay.
Can this MCCB be used in DC voltage systems?
Yes, the NEF431030 carries a dedicated 250VDC rating with a 10kA interrupting capacity, making it suitable for industrial direct current applications in addition to its standard AC ratings.
Are load lugs included, and what conductor sizes do they accept?
Standard mechanical load lugs are included with the breaker. They accommodate 14 AWG to 2 AWG conductors. Always verify the manufacturer torque label before finalizing terminations.
What is required to mount this breaker to the busbar?
As a bolt-on circuit breaker, it requires properly torqued mounting hardware to fasten the terminals directly to the NEF panelboard bus, ensuring a secure connection in commercial environments.
Is Federal Pacific still actively manufacturing the NEF series?
Federal Pacific Electric is obsolete. Units currently available are legacy stock used to maintain existing commercial NEF panelboards, saving facilities from requiring complete switchgear replacements.
Do the widespread Stab-Lok safety concerns apply to NEF series breakers?
The major safety controversies associated with Federal Pacific Electric primarily involve their residential Stab-Lok load centers and breakers. The NEF431030 is an industrial N-frame molded case circuit breaker built for commercial switchgear, which features a completely different internal mechanism.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
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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.