AirPax Electronics HH83XB378-B Bolt-On Circuit Breaker

The AirPax HH83XB378-B Bolt-On Circuit Breaker is a 77 A, three-pole protective device rated for 240 V AC, designed for bolt-on mounting in 3-phase electrical equipment. This AirPax unit, part of Sensata Technologies' power protection portfolio, combines isolation switching with overcurrent protection in a compact package suitable for equipment that requires robust three-phase protection. The HH83XB378-B is recognized in Carrier HVAC parts catalogs, indicating its use in Carrier equipment and other 240 V, 3-phase commercial appliances. With its bolt-on mounting and 77 amp rating, it provides automatic interruption under overload or short-circuit conditions to help prevent damage to circuits and connected motors in three-phase systems. When selecting this breaker for a system, ensure the equipment is designed for a 3P 240 V breaker at 77 A and that the bolt-on mounting configuration is compatible with the intended panel or enclosure.