Product Description: The Square D PXF36600LSI is a Molded Case Circuit Breaker from the Micrologic family. This 3-pole breaker is rated for 600 amps and 600 volts, with a 100kA interrupting capacity at 480V. It features solid-state protection with LSI (Long-Time, Short-Time, Instantaneous) functions and a bolt-on connection for secure installation.