Square D EGB16020 Miniature Circuit Breaker

The EGB16020 is an E-frame bolt-on circuit breaker designed specifically for use in Square D NF series panelboards. It occupies one pole space and fastens directly to the panel bus.

The primary difference is their short-circuit interrupting capacity. While all three are E-frame breakers that fit NF panelboards, they offer different fault current ratings. For example, at 277V, the standard EDB series is rated for 18kA, the EGB series is rated for 35kA, and the EJB series provides 65kA. Always verify the required AIC rating for your specific system voltage.

The slash voltage rating (600Y/347V) indicates that the EGB16020 is designed exclusively for solidly grounded Wye electrical systems. In these systems, the line-to-line voltage is 600V and the line-to-neutral voltage is 347V. It is not suitable for ungrounded or corner-grounded Delta systems operating at 600V.

Yes, this 20-amp breaker is SWD (Switching Duty) and HID (High-Intensity Discharge) rated. This means it is approved for safely switching fluorescent and HID lighting circuits on a regular basis without degrading the breaker mechanism.

The fixed thermal-magnetic trip unit provides two levels of protection. The thermal component (Long-Time) responds to gradual overloads, while the magnetic component (Instantaneous) trips immediately in the event of a severe short circuit.

Yes, this breaker includes a visual trip indicator. When an overload or short circuit occurs, the breaker handle moves to a center tripped position and a red indicator appears, making it easy to identify the faulted circuit inside the panelboard.