Product Description: The Square D HLA36040 is a Molded Case Circuit Breaker from the Powerpact family. It features a 3-pole design with a 600V, 40A rating and a 100kA@480V AIC rating. This breaker uses an I-Line Style Plug-In connection and includes Thermal Magnetic protection. It is suitable for a wide range of wiring sizes, from 14 AWG to 3/0 AWG.