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Federal Pacific NEF433020R Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Federal Pacific
NEF433020R
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEF433020R
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Federal Pacific NEF433020R - 20A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for demanding commercial environments, the NEF433020R delivers 20 amps of thermal-magnetic protection. This 3-phase molded case circuit breaker safeguards industrial equipment against damaging overloads and short circuits. Designed to maintain aging infrastructure, this bolt-on device fits Federal Pacific NEF and CDP panelboards. It serves as a reliable cross-reference for the UBIF20NB, ensuring a precise fit without panel modifications. It handles up to 18kAIC at 240VAC.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEF433020R |
| Series | NEF |
| Amperage | 20A |
| 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, CDP 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 Thermal, Fixed Magnetic |
| 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, Vibration Tested |
Product FAQs
8 answersWhich panelboards are compatible with the NEF433020R breaker?
This bolt-on breaker is designed specifically for installation in legacy Federal Pacific NEF and CDP series panelboards.
Is there a direct cross-reference for the NEF433020R?
Yes, the UBIF20NB is a recognized cross-reference for this breaker, ensuring a precise fit in NEF and CDP panelboards without requiring modifications.
Can the NEF433020R be used in direct current (DC) systems?
Yes, this breaker is rated for DC applications, providing an interrupting capacity of 10kA at 250VDC in addition to its standard AC ratings.
What wire sizes do the lugs on this breaker accept?
The factory-installed mechanical lugs accommodate wire gauges ranging from 14 AWG to 2 AWG.
Does the NEF433020R feature adjustable trip settings?
No, this breaker utilizes a fixed thermal-magnetic trip unit with preset long-time and instantaneous (LI) functions. The trip curve cannot be adjusted in the field.
What type of mounting connection does the NEF433020R use?
It utilizes a bolt-on connection to secure directly to the panelboard bus. The breaker is vibration tested to maintain a reliable connection in demanding industrial environments.
Is the NEF433020R suitable for reverse feed applications?
Yes, this breaker is designed for reverse feed applications, allowing it to be back-fed if the installation requires the power source to enter from the load side terminals.
Is the NEF433020R considered a Stab-Lok breaker?
No. The NEF series consists of commercial and industrial molded case circuit breakers with bolt-on connections. They are entirely distinct from Federal Pacific's residential Stab-Lok plug-on breakers.
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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.