Product Description: The Square D HGA36090SJ is a Molded Case Circuit Breaker from the Powerpact family. It features a 3-pole design with a 600V, 90A rating and a 35kA@480V AIC rating. This breaker uses an I-Line Style Plug-In connection and includes Thermal Magnetic protection. It also comes with a 525/600Vac shunt trip.