Eaton BAB1040 Bolt In Circuit Breaker 1 Pole 40 Amp

The Eaton BAB1040 is a 1-pole, 40-amp Type BA bolt-in circuit breaker from Eaton Cutler-Hammer. This bolt-in device is designed for installation in panels that accept BA-series breakers, delivering single-pole protection for a branch circuit. The part number BAB1040 identifies this precise unit, confirming its 40-amp rating and one-pole configuration within Eaton’s BA bolt-in family. As a Type BA breaker, it uses Eaton’s BA mounting and electrical form factor to connect to the panel’s bus and interrupt current under overcurrent conditions on the protected conductor. In practical terms, it is intended for use in compatible electrical distribution systems where a single hot conductor requires protection at 40 amps. The combination of a bolt-in mounting style, 1-pole design, and 40-amp rating defines the device’s role in providing targeted overcurrent protection within a suitable Eaton panel.