Connecticut Electric UBIF020N 20 Amp Circuit Breaker for Level 1 EV Charging
The Connecticut Electric UBIF020N is a 20A, 1-pole, plug-in replacement breaker for Federal Pacific Stab-Lok NC panels. The circuit breaker is ETL listed to UL 489, it offers 10,000 AIC protection and reliable performance for 120V circuits. Ideal for 15A and 16A Level 1 EV charger installations using a NEMA 5-15 outlet.
The Connecticut Electric UBIF020N 20 Amp Circuit Breaker is a plug-in replacement specifically designed for use in Federal Pacific Stab-Lok panels that accept NC-style thin breakers. If you’re installing a 15A or 16A Level 1 EV charger or setting up circuits for 3.8kW chargers, this breaker is an excellent choice.
As a certified EV charger installer, I’ve worked with older Federal Pacific load centers, and I’m always cautious about using reliable, modern breakers in these systems. The UBIF020N fits perfectly in these panels, offering a plug-in design that makes installation quick and easy. There’s no need for panel upgrades or any extra mounting hardware or modifications, and the breaker securely snaps into place, ensuring a stable connection that minimizes the risk of voltage drops or electrical faults.
This breaker features a 10,000 AIC interrupting capacity, which is essential when handling EV charger circuits that may experience fault conditions. The 20A rating is more than enough to support the 15A or 16A EV charger delivering up to 3.84 kW, and the ETL listing to UL 489 assures you that it meets safety standards for both the US and Canada. Whether you’re working on a retrofit or a new installation of a 3.84 kW EV charger, the UBIF020N provides peace of mind with its durability and performance.
I’ve personally tested it with the Lectron 120V Level 1 J1772 EV Charger, using a NEMA 5-15 outlet, and found it performed flawlessly. Even with the NEMA 5-15 plug-in EV charger running at full load for an extended period of charging 40+ hours, the dedicated EV circuit breaker didn’t trip, overheat, or show any signs of voltage drops.
I wired this breaker to protect the Level 1 EV charging circuit and support a NEMA 5-15R outlet for the 120V 15A Lectron Level 1 J1772 EV Charger. The circuit was installed using 12 AWG solid copper THHN wire (L1, N & G) in a ½-inch conduit, with grounding run to the panel’s bonded ground/neutral busbar, as shown in the wiring diagram below:
During testing, the entire circuit, including the breaker, remained cool and stable through several test runs, which included 40+ hours of trickle charging sessions in a warm environment. There were no signs of stress, overheating, or breaker trips, further confirming the breaker’s reliability in handling Level 1 charging applications.
I’ve used this breaker in multiple installations, including low-power circuits for Level 1 EV chargers like the Lectron 120V 15A charger, and it consistently delivers solid performance. The UBIF020N is an ideal solution for those needing to replace older breakers in Federal Pacific Stab-Lok panels and ensures that your electrical system is up to code, safe, and reliable for all your EV charging needs.
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