Zinsco Q40 – 40A 1 Pole Miniature Circuit Breaker Limited Time

Providing essential overcurrent protection for residential circuits, the Zinsco Q40 is a 40-amp, single-pole breaker rated for 120/240VAC. It delivers reliable long-time and instantaneous trip functions to keep household wiring safe. Engineered to fit original Zinsco load centers, this plug-on unit restores functionality to aging electrical infrastructure. It serves as an exact hardware match for discontinued panels.