Siemens NSB P150 Molded Case Circuit Breaker MCCB

Siemens NSB P150 Molded Case Breaker MCCB is a compact low-voltage molded‑case circuit breaker from Siemens' NSB family, designed to interrupt excess current in electrical distribution panels. Used to protect feeders and branch circuits in commercial and industrial installations, the NSB P150 MCCB integrates standard protection functions within a single enclosure. As part of the NSB line, it shares Siemens' design language for frame-based MCCBs and is suitable for integration into Siemens distribution schemes alongside other NSB devices. Because the P150 designation covers a range of ampere ratings and configurations within the NSB family, the exact electrical characteristics are determined by the specific P150 variant.