... ratings: a. AC: up to 63A, AC230/400V, AC50/60Hz; b. DC: up to 63A, DC110V/1P, DC125V/2P Application: for ... breaking capacity of this device, network normal voltage.tripping curves:B curve(3-5ln)protection for people and big length cables ... transformers,breakdown lamps). Chint miniature circuit breaker NB1-63-2P 1A UL certificated