Square D EDB34045 Miniature Circuit Breaker

This breaker is specifically designed for use in Square D NF series panelboards. It bolts directly to the NF interior bus.

No. NQ panelboards require QO or QOB breakers, and I-Line panels require specialized I-Line molded case breakers. The E-frame physical footprint is exclusive to NF panelboards.

Yes. Standard EDB circuit breakers like the EDB34045 do not have line and load markings, meaning they are suitable for reverse feeding or backfeeding applications in your panel.

This is a slash rating. It signifies that the breaker can only be safely applied in solidly grounded Wye electrical systems where the line-to-ground voltage does not exceed 277V. It is not rated for use on ungrounded or corner-grounded Delta systems.

Yes, standard 15A through 50A EDB breakers, including the 45A EDB34045, are UL Listed as HID rated. This makes them suitable for switching high-intensity discharge lighting circuits.

Yes, the EDB34045 is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment branch circuits.

As a 3-pole E-frame breaker, it requires three standard pole spaces to mount within a Square D NF panelboard.

No, it features a fixed thermal-magnetic trip unit. It provides standard Long-Time and Instantaneous (LI) trip functions that are calibrated and set at the factory.

They share the exact same physical footprint and fit the same NF panelboards, but have different interrupting capacities (AIC) at 480Y/277VAC. The EDB is rated 18 kAIC, the EGB is 35 kAIC, and the EJB is 65 kAIC. You can upgrade to the EGB or EJB if your system requires a higher fault current rating.

No, the EDB34045 is a standard thermal-magnetic breaker providing basic overload and short-circuit protection. It does not provide Ground Fault Equipment Protection (GFEP), which would typically be denoted by an EPD suffix in the catalog number.