Challenger A240N U 2-Pole Magnetic Circuit Breaker

Challenger A240N U 2-Pole Magnetic Circuit Breaker is a two-pole, 40-amp device designed for plug-in installation in Challenger load centers and compatible panels. Rated for 120/240 V AC, it carries a 10,000-amp interrupting rating and uses standard-trip protection to guard against overloads. The unit is documented as UBITBA240 and is offered in a plug-mount configuration, making it a common direct-replacement option for Challenger A-series panels. In addition to Challenger panels, listings commonly recognize compatibility with Westinghouse and Bryant load centers where listed, helping installers find interchangeable options when required. Distributors such as Lowe's Pro Supply and Bay Power stock this model.