Connecticut Elec UBIZ0250-B 50A 2-pole Zinsco Breaker

Product Description

The CONNECTICUT ELEC/VIEW-PAK UBIZ0250-B is a 50-amp, 2-pole common-trip circuit breaker designed as a direct replacement for Zinsco-style panels. Rated for 120/240 volts, it uses a half-size, space-saving profile at 0.5 inches per pole, making it suitable for older Zinsco loadcenters where standard full-size breakers will not fit. Licensed electricians install this breaker during panel service, breaker replacement, or circuit additions in residential and light commercial applications. It ships in bulk packaging with a package quantity of 3 units.

This breaker is intended for use in Zinsco-style residential electrical panels that require a half-size replacement breaker. It is a common install in older homes still running original Zinsco loadcenters where the bus bar configuration demands this specific form factor. Electricians use this part to restore safe overcurrent protection on 240-volt branch circuits such as HVAC disconnects, dryers, water heaters, and similar double-pole loads.

Key Features

• 50-amp, 2-pole common-trip design protects 120/240-volt branch circuits
• Half-size form factor at 0.5 inches per pole fits Zinsco-style loadcenters
• Common-trip mechanism ensures both poles open simultaneously on a fault
• Bulk packaging — sold as a pack of 3 units
• Drop-in replacement profile reduces installation time on panel service calls

Compatibility

Designed as an OEM-style replacement for Zinsco-style residential electrical panels requiring a half-size, 2-pole circuit breaker with a 0.5-inch-per-pole profile.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. Always shut off the main service disconnect and verify the bus bars are de-energized before handling any breaker in the panel. Inspect the Zinsco bus bar clips for corrosion or damage before seating the replacement breaker. Never work inside the panel with the utility-side conductors still energized — if in doubt, contact the utility to pull the meter.