Zinsco
Zinsco UBIZ20 Miniature Circuit Breaker 20A 1 Pole 120/240V AC
Miniature circuit breaker rated 20 A, single-pole, 120/240 V AC with 10 kA interrupting capacity for Zinsco load centres
- 20 A single-pole protection for 120/240 V AC circuits
- 10 kA interrupting rating handles high fault currents
- Plug-in mounting fits Zinsco ML12 load centers
- Compact 4.8 in frame saves panel space
- HACR-rated 125 A frame suits HVAC applications
Zinsco UBIZ20 20A Single-Pole Breaker
This miniature circuit breaker carries a 20 A rating and fits Zinsco load centers using a plug-in mounting style. It operates on 120/240 V AC single-phase systems and provides a 10 kA interrupting rating at 120 V AC. The toggle actuator and lug terminal complete the standard frame design.
Suits Zinsco panel maintenance
Electricians servicing existing Zinsco ML12-series panels will find this breaker a direct fit for 20 A lighting or receptacle circuits. It is not for panels of other brands, for DC applications, or for circuits requiring a two-pole or higher-amperage device.
20 A continuous capacity with 10 kA fault protection
The breaker comfortably handles sustained 20 A loads on 120 V or 240 V AC branches. It runs out of headroom when fault current exceeds 10 kA at 120 V AC, when a 240 V AC interrupting rating is required, or when the load demands more than a single 20 A pole can supply.
Highlights
- 20 A single-pole protection for 120/240 V AC circuits
- 10 kA interrupting rating handles high fault currents
- Plug-in mounting fits Zinsco ML12 load centers
- Compact 4.8 in frame saves panel space
- HACR-rated 125 A frame suits HVAC applications
Specifications
| Brand | ZINSCO |
|---|
Questions about this item
Will this breaker fit my Zinsco ML12 load center?
Yes, the UBIZ20 is listed as compatible with the Zinsco ML12 load center series and uses a plug-in mounting style that matches that panelboard.
Can I install this single-pole breaker next to an older two-pole unit in the same panel?
The breaker occupies one pole space at .8 inches wide, so it can sit beside multi-pole breakers as long as the panel bus and cover allow the arrangement.
How do I verify the breaker is operating correctly after installation?
Switch the toggle actuator to the on position and confirm the circuit carries load up to 20 A at 120/240 V AC without tripping; the breaker is rated for a maximum AIR of 10 kA at 120 V AC.
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