The GE LE36100LS is a molded case circuit breaker rated 600V and 100A, falling under Category 01048-LE 250, 400_FRAME. This is a standard interrupting-capacity breaker sized for panelboard or switchboard mounting, typically used to protect feeder circuits or large branch loads in industrial distribution.
The 100A continuous rating at 600V AC makes this breaker a fit for 480Y/277V or 600V delta feeder circuits in commercial and industrial panels. The 250/400 frame designation indicates a compact physical footprint relative to higher-frame breakers, easing retrofit into existing switchgear lineups.