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Federal Pacific NEF421070 Molded Case Circuit Breaker
- 70A
- 2 Pole
- Bolt-On
Federal Pacific
NEF421070
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF421070
Quantity
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Federal Pacific NEF421070 - 70A 2 Pole Molded Case Circuit Breaker
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Description
Part of the classic N-frame lineup, the Federal Pacific NEF421070 provides essential 70A circuit protection for commercial environments. This two-pole molded case breaker ensures reliable power management in older facilities. It installs into obsolete FPE NEF and CDP panelboards, offering a seamless fit without adapter hardware. For modern replacements, the UBIF270N serves as an exact cross-reference.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF421070-R |
| Series | NEF |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NEF Panelboards, CDP 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, Auxiliary Switch, Undervoltage Release, Bell Alarm |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed, Vibration Tested |
Product FAQs
7 answersWhich panelboards accept the Federal Pacific NEF421070 circuit breaker?
This N-frame breaker is specifically designed for use in legacy Federal Pacific NEF and CDP panelboards. It bolts directly into the enclosure without the need for retrofit adapters.
How is the NEF421070 installed into the panelboard?
It utilizes a bolt-on mounting configuration that fastens directly to the busbar of compatible NEF and CDP panelboards, providing a secure mechanical and electrical connection.
What are the wire size limits for the NEF421070 lugs?
The integrated lugs are sized to accept conductors ranging from 14 AWG minimum up to 1/0 AWG maximum.
Is the NEF421070 rated for direct current systems?
Yes, this breaker supports 250V DC applications and provides a 10kA interrupting capacity for DC faults, alongside its standard AC ratings.
How does the interrupting capacity scale with system voltage?
The breaker provides 18kA of fault interruption at 240V AC, which steps down to 14kA when applied to 480V AC systems.
What is the direct cross-reference for the NEF421070?
The UBIF270N is an exact-fit aftermarket replacement that matches the 70A rating and N-frame dimensions, allowing it to bolt into the same Federal Pacific enclosures.
What type of fault protection does this breaker provide?
It features a fixed thermal-magnetic trip unit that delivers long-time protection for overloads and instantaneous protection for short circuits (LI trip functions).
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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.