Connecticut Electric UBIZ0220 RC3820 Replacement 20A Two-Pole Thin Series Breaker for Zinsco

Upgrade your Zinsco load center with the Connecticut Electric UBIZ0220 RC3820 replacement circuit breaker. This new unit is designed to fit Zinsco panels and is Safety Agency Listed, offering a reliable plug-in option when you need to restore circuit protection quickly and confidently.

Design, compatibility, and safety

The UBIZ0220 is a 20 amp, two-pole breaker built in a slim 3/4 inch body for a compact fit in crowded panels. It handles 120/240 VAC operation, making it suitable for both lighting and appliance circuits while preserving space for future additions. As a plug-in style device, it offers a straightforward replacement path for compatible Zinsco panels without requiring extensive wiring changes.

Key compatibility notes: this unit is intended for Zinsco circuit breaker panels and may also appear branded as Sylvania RC 3820 in some inventories. It carries Intertek ETL Listing to UL Standard 489 for the US and Canada, and it provides a robust 10,000 AIC interrupting capacity, supporting protection against high fault energy in common residential and light commercial settings.

Specifications and typical use

• New, factory-tested breaker by Connecticut Electric
• For use in Zinsco load centers
• Intertek ETL Listed to UL Standard 489 (US & Canada)
• 10,000 AIC interrupting capacity
• 20 Amp, 120/240 VAC, 2-pole, 3/4" body
• Plug-in design for quick installation
• Also branded as Sylvania RC 3820 in some panels

Real-world scenarios where this breaker can be helpful include protecting circuits supplying baseboard heating, space heaters, or 240V air conditioning equipment. While these are common use cases, actual installations depend on your system design and local electrical codes. This unit is presented as a possible replacement option when a Zinsco panel requires a new, tested breaker with a high interrupting rating and a compact form factor.

Practical guidance for replacement

• Verify panel compatibility and local code requirements before swapping breakers
• Power down the main disconnect and inspect the panel for any signs of wear or damage
• Handle the plug-in unit with steady care to avoid bending or damaging bus connections
• Keep a spare replacement on hand for future maintenance and quick service

Note: This description provides typical use cases and specifications based on product data. Actual results depend on the specific electrical installation and adherence to local regulations.