deion circuit breaker

deion circuit breaker

[dē′ī‚än ′sər·kət ‚brāk·ər]
(electricity)
Circuit breaker built so that the arc that forms when the circuit is broken is magnetically blown into a stack of insulated copper plates, giving the effect of a large number of short arcs in series; each arc becomes almost instantly deionized when the current drops to zero in the alternating current cycle, and the arc cannot reform.