PowerPacT B-Frame brings thermal-mechanical circuit protection in a compact size and offers a wide range of accessories, auxiliaries, and connection options. This PowerPacT B-Frame circuit breaker provides thermal magnetic circuit protection with a breaking capacity of 25kA at 600Y/347VAC. All PowerPacT B-Frame circuit breakers are equipped with dual-break rotating contacts that reduce the amount of peak current during a short circuit fault. All PowerPacT circuit breakers have an integral push-to-trip button in the cover to manually trip the circuit breaker. PowerPacT B-Frame circuit breakers come in 1 to 4-pole unit mount construction and in 1 to 3-pole I-Line construction. This circuit breaker's unit mount construction features traditional back pan mounting with screws or integrated DIN rail mounting for installation flexibility. This unit features EverLink lugs, a patented design to reduce loosening of cables over time, on both termination ends. This PowerPacT B, 40A, 3 pole, circuit breaker has a breaking capacity of 25kA at 600Y/347VAC. PowerPacT B circuit breakers comply to UL, CSA, NOM, and IEC standards and are CE marked.