BR140

The BR140 is a ‑pole,  amp thermal‑magnetic circuit breaker from Eaton’s BR family, engineered for reliable overcurrent protection in residential and light commercial electrical distribution systems. As a Type BR breaker, the BR140 is designed to plug directly into Eaton BR load centers and compatible panelboards using a standard plug‑on connection, simplifying installation and space‑efficient panel layout. It is rated for 120/240 VAC service, making it suitable for common branch circuits such as general lighting, receptacles, and small appliance feeds that require single‑pole protection and simultaneous disconnect of both ungrounded conductors.

Electrically, the BR140 employs a thermal‑magnetic trip mechanism that combines long‑time overload protection with instantaneous trip response to short‑circuit conditions. It is UL 489 listed and typically rated for a {aic rating} interrupting capacity, meaning it can safely interrupt fault currents up to 10,000 amps in properly designed systems. This balanced protection approach helps prevent nuisance trips due to normal inrush currents while ensuring rapid clearing of dangerous fault events. The breaker’s common‑trip linkage ensures that both poles open together on overload or fault, providing safe operation in multi‑wire branch circuits and compliance with NEC requirements for simultaneous disconnect.

Mechanically, the BR140 features a robust molded case and a manual toggle actuator for easy ON/OFF operation and reset after a trip. It is designed to accept standard conductor sizes compatible with typical home and light commercial wiring (e.g., #14–#4 AWG copper or aluminum conductors, per panelboard rating). Because of its wide availability and dependable performance, the BR140 is often used as either a specified new‑installation breaker in Eaton BR panelboards or as a direct replacement in maintenance and retrofit scenarios requiring dependable  amp protection with single‑pole common trip capability.

Purchase the BR140 at Electrical.com, your reliable partner for industrial and commercial electrical products. Our selection includes circuit breakers, panel boards, and accessories from manufacturers like Eaton, Cutler Hammer and Westinghouse, backed by a dedicated sales team ready to assist with technical questions, product selection, and support.