Schneider Electric LGL36400U33X Molded Case Circuit Breaker

This unit-mount breaker is designed for installation in PowerPacT L-frame enclosures, as well as compatible switchboards and panelboards that accommodate feed-thru lug configurations.

The U33X suffix indicates a Micrologic 3.3S electronic trip unit. It provides adjustable Long-Time (L), Short-Time (S), and Instantaneous (I) protection settings, allowing panel builders to precisely coordinate tripping characteristics with other devices in the electrical system.

The standard mechanical lugs accept two 2/0 AWG to 500 kcmil conductors per phase. They are dual-rated for both aluminum and copper wire.

This is a standard 80 percent rated circuit breaker. Per National Electrical Code (NEC) guidelines, continuous loads lasting three hours or more must not exceed 320 amps, which is 80 percent of its 400A nominal rating.

As a unit-mount breaker, it secures directly to a backpan or mounting plate using screws. It does not plug onto a busbar like I-Line variants, relying instead on mechanical lugs for both line and load side connections.

Yes, the PowerPacT L-frame design supports a wide range of field-installable internal accessories, including shunt trips, undervoltage releases, and auxiliary switches. These accessories share common mounting locations across the PowerPacT series.

The G designates the interrupting capacity tier within the PowerPacT L-frame family. It signifies a rating of 65kA at 240VAC, 35kA at 480VAC, and 18kA at 600VAC.

Yes, like all PowerPacT circuit breakers, it features an integral push-to-trip button on the front cover. This allows electricians to manually trip the breaker to verify the mechanical operation of the tripping mechanism.