Square D EDB24030 Molded Case Circuit Breaker

No. Square D NQ panelboards are designed strictly for QO and QOB circuit breakers. The EDB24030 is an E-frame circuit breaker built specifically to bolt into Square D NF panelboards, which are typically used for 480Y/277V electrical distribution.

Yes, the EDB24030 is HACR rated. This certification verifies that the breaker is suitable for safely protecting the specific motor and compressor loads found in heating, air conditioning, and refrigeration systems.

Yes, this breaker is UL Listed as HID rated. It is designed to handle the elevated inrush currents generated by high-intensity discharge lighting systems without causing nuisance tripping.

The factory-installed aluminum lugs on this breaker require a tightening torque of 30 lb-in (3.4 N-m). This specification applies to both copper and aluminum conductors across the accepted 14 to 6 AWG size range.

Yes, they share the exact same physical E-frame dimensions and all mount directly into Square D NF panelboards. The difference lies strictly in their short-circuit interrupting ratings. EDB offers standard interrupting capacity, while EGB and EJB provide higher levels of fault protection.

If your application requires an interrupting rating greater than the 18 kAIC at 480Y/277V provided by the EDB24030, you can substitute the EGB24030 (rated for 35 kAIC) or the EJB24030 (rated for 65 kAIC). Both are direct drop-in replacements that fit the same NF panelboard footprint.

This breaker is equipped with the Square D Visi-Trip indicator. When the breaker trips due to an overload or short circuit, a highly visible red flag appears in the indicator window, allowing maintenance personnel to quickly distinguish the tripped circuit from breakers in the standard ON or OFF positions.