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Zinsco UBIZ50 miniature circuit breaker, 50A single pole, grey plastic body, toggle actuator, plug-in lug terminals

Zinsco

Zinsco UBIZ50 50A 1 Pole 120/240V AC Circuit Breaker

SKU CH-WWVQ-JPE88

A 50 A single-pole miniature circuit breaker rated for 120/240 V AC with a 10 kA interrupting capacity, plug-in mounting and lug terminals for Zinsco load centres

  • 50 A standard breaker protects single-phase circuits
  • 120/240 V AC rating fits residential panels
  • 10 kA interrupting capacity handles fault currents
  • Plug-in mounting simplifies installation in ML12 load centers
  • Compact 4.8 in frame fits tight panel spaces

Zinsco UBIZ50 50A single-pole breaker

The Zinsco UBIZ50 is a 50 amp miniature circuit breaker designed for single-phase 120/240V AC systems. It installs in compatible Zinsco ML12 load centres using a plug-in mounting style. The toggle actuator provides manual on/off control for branch circuit protection. It is not rated for DC applications.

50A capacity with 10kA interrupting rating

This breaker handles continuous loads up to 50 amps on a 120V AC supply with a maximum AIR rating of 10kA. The 125A frame size provides headroom within the panel assembly. It runs out of interrupting capacity above the rated fault current level. The single-pole design limits use to one hot conductor only.

Plug-in mounting with lug terminals

The plug-in mounting style allows tool-less installation into Zinsco ML12 series panelboards. A standard lug terminal accepts the conductor for secure connection. Dimensions are 4.8 in length, .8 in width and 2.5 in depth for panel fit. Minimum operating temperature is 0 degrees F for reliable operation in cold environments.

Highlights

  • 50 A standard breaker protects single-phase circuits
  • 120/240 V AC rating fits residential panels
  • 10 kA interrupting capacity handles fault currents
  • Plug-in mounting simplifies installation in ML12 load centers
  • Compact 4.8 in frame fits tight panel spaces

Specifications

BrandZINSCO

Questions about this item

Will the UBIZ50 50A single-pole breaker fit in my existing Zinsco ML12 load center?

Yes, the UBIZ50 is designed for Zinsco ML12 series load centers and uses a plug-in mounting style.

How can I verify the breaker is operating correctly once installed?

After installation, switch the toggle actuator to the ON position and confirm the connected circuit receives 120/240V AC power.

Does the package include the terminal lug or must I purchase it separately?

The breaker has a terminal connection lug built in, so no separate lug purchase is required.

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