Top Pick Square D EJB34040 – 40A 3 Pole Miniature Circuit Breaker

Built for commercial applications, the Square D EJB34040 is a 3-pole, 40A miniature circuit breaker. It delivers reliable thermal-magnetic protection for distribution circuits. This E-Frame breaker installs into Square D NF panelboards using a sturdy bolt-on connection. It includes standard lugs accommodating 14-2/0 AWG copper wiring. With a 65kAIC rating at 480Y/277V, it ensures safety during faults. The unit features a Visi-Trip indicator and carries HACR and HID ratings.