Square D EGB34040SA Miniature Circuit Breaker

The SA designation indicates that this breaker includes a factory-installed 120VAC shunt trip. This allows the breaker to be tripped remotely for emergency shutdowns or load shedding by applying a 120V signal to the accessory leads.

No, Square D E-frame electrical accessories cannot be field-installed. If your control scheme requires a shunt trip, you must purchase a breaker with the accessory factory-installed, such as the EGB34040SA.

This E-frame bolt-on breaker is designed exclusively for use in Square D NF series panelboards. It will not fit in NQ, NQOD, or I-Line series panels.

Yes, EDB, EGB, and EJB are all E-frame breakers sharing the same physical footprint and bolt-on mounting. The difference is their interrupting rating. The EGB34040SA can upgrade an 18kAIC EDB model or serve as a cost-effective alternative to a higher-rated EJB model, provided your panel's short-circuit current requirements are met.

Yes, it includes the Square D Visi-Trip indicator. When the breaker trips due to a fault or a remote shunt trip command, a highly visible red flag appears, allowing electricians to quickly identify the tripped circuit inside a crowded NF panelboard.

Yes, the EGB34040SA is HACR rated. This means it has been tested and certified for the specific inrush currents and operational demands of heating, air conditioning, and refrigeration equipment.

Yes, the EGB34040SA comes with factory-installed mechanical lugs ready to accept either copper or aluminum conductors. Ensure you use an appropriate anti-oxidant compound when terminating aluminum wiring.

No, the EGB34040SA features a fixed thermal-magnetic trip unit. Both the long-time thermal overload protection and the instantaneous magnetic short-circuit protection are pre-set at the factory and cannot be adjusted in the field.