circuit breaker,type CG (cat no. NCX3B050) non-interchangeable frame, with circuit breaker approval acc. to UL 489 standard breaking capacity 3-pole, NEMA rating 35kA/480V (molded case circuit breaker) Electronic Trip Unit TM, LI function TA=40°C In=50A rated current II=600A short-circuit protection Ir=50A Electronic Trip Unit for line protection without connection accessories without auxiliary release without auxiliary/alarm switch