Siemens Speedfax™ Type BL 1-Pole molded case circuit breaker is rated at 40-Amps and 120-Volt AC. The interrupt rating of this circuit breaker is 10-Kilo-Amps. It has a dimension of 1-Inch x 3-Inch x 3-9/16-Inch. This 1-Phase circuit breaker with load side lug terminal connection, accommodates aluminum wires of size 8 - 4-AWG and copper wires of size 8 - 6-AWG. It employs common, thermal and fixed magnetic trip for ensuring reliable performance. This circuit breaker supports bolt-on mounting, therefore making installation easier. It is suitable for use in lighting and distribution application. It withstands a temperature rating of 40 deg C. Circuit breaker is UL listed and CSA certified.