Product Description: The Merlin Gerin MP12H1 is an Insulated Case Circuit Breaker from the Masterpact family. It features 3 poles, 600V voltage, and a 1200A amperage rating with a 65kA@480V AIC rating. This breaker includes solid-state protection for reliable performance. It is manufactured by Merlin Gerin, Schneider Electric, and Square D.