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Single-pole Zinsco plug-in breaker with grey toggle and lug terminal

Zinsco

Zinsco UBIZ30 1P 30A 120VAC Plug In Circuit Breaker

SKU CH-KHHC-251R9

Single-pole 30 A plug-in breaker rated 120 V AC with 10 kA interrupting capacity for Zinsco ML12 load centers

  • Single-pole protection for 120 V circuits
  • 30 A rating matches standard branch-circuit loads
  • 10 kA interrupting capacity clears faults safely
  • Plug-in mounting fits Zinsco ML12 load centers
  • Compact 4.8 in frame saves panel space

Zinsco UBIZ30 30A 120VAC Breaker

This single-pole plug-in breaker protects one 30-amp 120-volt circuit in a Zinsco ML12 load center. It mounts by plugging directly onto the panel bus and uses a toggle actuator for manual reset. The frame is rated 125 amps and carries a 10kA interrupting rating at 120 volts AC. It is designed for standard branch-circuit protection in compatible panels.

Suits Zinsco ML12 panels only

Electricians maintaining Zinsco load centers with ML12 series buswork can use this breaker for 30-amp single-phase loads. It will not fit panels that require bolt-on or clamp-style mounting. It is not rated for DC circuits or for voltages above 120 volts AC. Installers needing two-pole or higher-amperage devices must select a different breaker.

30A 120VAC single-pole rating

The breaker carries 30 amps at 120 volts AC on a single pole with a 10kA AIR rating. This combination determines whether the device matches the circuit design and the available fault current at the panel. Verify the load-center series and the required ampere rating before installation.

Highlights

  • Single-pole protection for 120 V circuits
  • 30 A rating matches standard branch-circuit loads
  • 10 kA interrupting capacity clears faults safely
  • Plug-in mounting fits Zinsco ML12 load centers
  • Compact 4.8 in frame saves panel space

Specifications

BrandZINSCO

Questions about this item

What does the 30 A rating mean for circuits in a Zinsco load centre?

It limits the branch circuit to 30 amps of continuous current at 120 V AC before the breaker trips.

How does the 10 kA interrupting rating affect protection on a 120 V AC panel?

The breaker can safely clear fault currents up to 10 000 amps on a 120 V AC system.

Will the 4.8 in by .8 in plug-in frame fit a Zinsco ML12 panel?

Yes, the plug-in mounting style and frame size are made for Zinsco ML12 load centres.

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