The Square D EHB34020 is a 3 pole, 20 amp, 480/277V AC 3 phase circuit breaker with a manual reset feature. It is designed for wall mounting in interior spaces, with a standard plug type for easy installation. This circuit breaker has a tripping characteristic of Type A and is suitable for branch circuit and electrical wiring applications. With thermal overload protection and a trip indicator, it offers reliable protection and control for electrical systems. The Square D EHB34020 is a durable and efficient component for ensuring the safety and functionality of electrical circuits.