Insulated Case Circuit Breaker Masterpact NW25H, Maximum Amperage: 2500 Amps., Voltage Rating: Rated for up to 600V AC (standard for this series ranges up to 1150V)., Poles: 3-Pole configuration, used for 3-phase electrical systems., Mounting: Designed for Bolt-On or Draw-out mounting depending on the specific switchgear frame., Interrupting Capacity: Typically rated for 100kA @ 480V (standard for "H" high-performance models)