Eaton NSB HKD3225 Molded Case Circuit Breaker

The Eaton NSB HKD3225 is a 3-pole molded case circuit breaker rated for 225 amperes, designed to protect electrical circuits from overcurrent events by interrupting current flow when a fault is detected in distribution panels, switchboards, and feeder circuits under normal operating conditions and during fault events. As an MCCB, it serves as a main or branch protection device in low-voltage installations, offering a robust interruption capability for overloads and short circuits in distribution panels and feeders, with predictable trip behavior essential for safe electrical operation. The HKD3225 designation identifies this unit within Eaton's NSB molded case breaker family, and the 3P configuration indicates three active poles delivering protection across three phases in a compact, modular form that fits standard equipment racks and can be integrated with other NSB components for streamlined power distribution. With a 225 A rating and a three-pole configuration, it is suited to moderate-to-high load installations where reliable, safe interruption of fault current helps protect downstream equipment, minimize downtime, and maintain overall system reliability.