Square D EDB36020 Molded Case Circuit Breaker

No. The EDB36020 is an E-frame bolt-on breaker engineered exclusively for Square D NF series panelboards. NQ panelboards require QO or QOB breakers, and I-Line panels require specialized I-Line style breakers.

These three breakers share the exact same physical footprint and mount identically in NF panelboards. The only difference is the short-circuit interrupting capacity. The EDB is the standard tier, EGB is the high-interrupting tier, and EJB is the extra-high interrupting tier. You can safely use an EGB36020 or EJB36020 to replace an EDB36020 if higher fault protection is required or if the standard EDB is unavailable.

Yes. Standard E-frame breakers like the EDB36020 do not have designated line and load markings, which means they are suitable for backfeeding applications when properly secured according to NEC guidelines.

Yes, E-frame breakers in this series are UL Listed as HACR type, making them suitable for safely protecting multi-motor HVAC and refrigeration equipment. They are also HID-rated for high-intensity discharge lighting circuits.

When the EDB36020 trips due to an overcurrent or short-circuit event, the handle snaps to a center position and a high-visibility red indicator appears. This allows you to quickly identify the tripped breaker inside a fully populated electrical panel.

The thermal-magnetic trip unit provides LI protection, which stands for Long-Time and Instantaneous. The long-time thermal mechanism responds to gradual circuit overloads, while the instantaneous magnetic mechanism provides immediate tripping during a severe short circuit.