... distribution system in industry. Applications: Protective functions against short circuit and overload, and are used in lighting distribution system in ... are mainly adapted to the circuit of AC 50/60Hz, 230V in single pole, 400V in double, three or four poles for ... life: 60,000Mechanical life (times): 8,000 Square D-1 Circuit Breakers with Bolt on Type,10KA Breaking Capacity, Black Bakelite Case