Maintaining legacy power distribution panels is straightforward with this 20-amp Stab-Lok compatible breaker. Engineered specifically for Federal Pacific enclosures, the single-pole unit slides into place without requiring aftermarket modifications. It serves as an effective cross-reference for the UBIF020N, offering dependable 10kA interrupting capacity at 120VAC. The integrated SWD rating makes it suitable for everyday residential switching applications.
Stab-Lok Design, Thin / Wafer Style (1/2 inch per pole), Color Coded Handle
Product FAQs
8 answers
What panels are compatible with the Federal Pacific NC020 breaker?
The NC020 is designed exclusively for legacy Federal Pacific Stab-Lok load centers. It uses the proprietary Stab-Lok plug-in connection and cannot be installed in modern panelboards from manufacturers like Square D, Eaton, or Siemens.
Is the NC020 a thick or thin Stab-Lok breaker?
The NC020 is a thin, half-size Stab-Lok breaker that measures 1/2-inch wide per pole. It is designed to save gutter space in compatible panels, distinguishing it from the thick 1-inch wide NA series breakers.
Can I use an NA-series breaker to replace an NC020?
It depends on the specific buss bar plate in your Stab-Lok panel. Panels with an E-shaped buss bar cutout can often accept either the thick 1-inch NA or thin 1/2-inch NC breakers. Check your panel layout and bussing configuration before substituting.
What is the current aftermarket replacement for the Federal Pacific NC020?
The Connecticut Electric UBIF020N is a newly manufactured, ETL-listed direct replacement for the 20A 1-pole Federal Pacific NC020. It meets modern testing standards for use in legacy Stab-Lok panels.
What does the LI trip function mean on the NC020?
The LI designation indicates Thermal Magnetic protection with Long-Time (L) and Instantaneous (I) trip functions. The long-time function protects against sustained overloads, while the instantaneous function quickly breaks the circuit during severe short circuits.
Is the 10kAIC interrupting rating sufficient for my panel?
A 10kAIC rating was standard for older residential Stab-Lok panels. However, before installing the NC020, an electrician must verify that the available fault current at your specific panel does not exceed 10,000 amps to ensure safe operation during a short circuit.
Should I replace my entire Federal Pacific panel instead of buying replacement breakers?
Federal Pacific Stab-Lok panels are considered obsolete and have documented safety concerns regarding older breakers failing to trip under load. While replacing a faulty NC020 with a tested replacement restores a single circuit, many licensed electricians recommend a complete panel upgrade for long-term safety and modern electrical code compliance.
Are Federal Pioneer breakers interchangeable with Federal Pacific NC020 breakers?
Federal Pioneer is the Canadian equivalent of Federal Pacific Electric. Federal Pioneer Stab-Lok breakers use the same design and physically fit into FPE Stab-Lok load centers, but local electrical codes and UL or CSA listing requirements dictate whether they can be legally substituted in US installations.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 6 reviews.
Federal Pacific NC015 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
1/27/26
breaker
Had a warranty issue and account manager was AWESOME / Keizer Davids
JN
Joe N.
Verified Buyer
Reviewing
Federal Pacific NC020 - 20A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/12/25
Purchased four circuit breakers
Was happy with all the service would’ve wished the person would inform me if I would’ve spent $15 more I could’ve got free shipping. That way I could’ve ordered another 20 amp circuit breaker. And got it for free.
PM
Patrick M.
Reviewing
Federal Pacific NC015 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
5/31/23
great selection and free delivery!!!
great selection and free delivery!!!
MP
Mark P.
Reviewing
Federal Pacific NC015 - 15A 1 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/27/23
Quick
Provided quick turnaround 👍. Resolved my parents issue 👍
TT
Tammy T.
Reviewing
Federal Pacific NC0240 - 40A 2 Pole Miniature Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
3/4/22
Federal Pacific breakers
I wasn't sure about ordering my particular breakers online because they don't make replica replacements but found the warranty outstanding. The follow-up call as a new customer and the speed with which my order was processed and completed was superior. The price was 1/3 what the ONE local supplier charged.