Cutler-Hammer NSB KD3100 Molded Case Breaker MCCB

The Cutler-Hammer NSB KD3100 Molded Case Breaker (MCCB) is a 3-pole, 100-amp protection device designed for 50/60 Hz three-phase electrical systems. As a molded case breaker, it interrupts fault currents and overloads to safeguard conductors and equipment within industrial and commercial power distribution panels. The KD3100 designation identifies the NSB series, signaling a compact molded-case solution intended for reliable three-phase protection at a 100 A rating. This MCCB is suited for panel installations where overcurrent protection is needed for 3-phase feeders or circuit branches in environments such as manufacturing facilities, data centers, and large office complexes. It supports standard 50/60 Hz operation, aligning with many regional electrical systems, and is specified for three-phase usage at the 100-amp level. In applications requiring molded-case protection for three-phase circuits at 100 A, the NSB KD3100 MCCB from Cutler-Hammer offers a straightforward option within the brand’s lineup.