Siemens Low Voltage Sentron Electronics Accessories - Sentron Comm and Elect Accessories are Circuit Protection Molded Case Circuit Breakers. Sub Brand SENTRONType BQ. Features MOUNT PLATE Std UL F. Rating 50/60 Hz Frame BQ No. Of Poles 3P Length 4 Width 5 Height 4 Operating Temperature (-25C -- 75C) AMBIENT TEMPERATURE Environmental Conditions INDOOR