otor Protection Circuit Breaker DZSS(3RV)seried circuit breakers are mainly used for the overload,short-circuit and phase-failure protection for motors in the circuit of AC 50/60Hz,rated operating voltage up to 660v,rated operating current from 0.11A to ZSA.They can be also used for circuit protection in the circuit of Technical Specification Tripping grade: 10:matching style 1:/q=50KA Tripping grade: 10;matching style 1:/q=50KA Tripping grade: 10.matching style 2:/q=100KA Standard three-phase motor 4 pule 400V AC Rated power Motor current The comm iling range of overload tripping device Tripping Curve