Zinsco A-120 Circuit Breaker
- amperage: 20A
- voltage: 120V AC
- poles: 1-Pole
- mounting: Plug-In Type A
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The Zinsco Catalog Number A-120 is a 1-Pole thermal-magnetic circuit breaker rated for 20A and designed for 120V AC applications. This specific plug-in style breaker is required for use in legacy Zinsco electrical panels (Type A/Q Panelboard systems). The breaker provides essential overload and short-circuit protection for individual branch circuits in residential or light commercial installations where system replacement is not yet feasible.
