Siemens NEG3B015 Three-Phase Molded-Case Circuit Breaker

Siemens NEG3B015 is a three-pole molded-case circuit breaker (MCCB) designed for protecting three‑phase electrical circuits. It is rated for 480V and 15 AMP, providing overcurrent protection by interrupting fault currents in distribution panels that feed three‑phase loads. As part of Siemens’ MCCB family and carrying the legacy of the ITE brand, the NEG3B015 offers a compact, multi‑pole protection solution suitable for industrial and commercial installations that require a 3‑pole, 480V, 15A device. In use, it protects downstream circuits and connected equipment from overloads and short circuits, helping maintain panelboard reliability in 3‑phase power architectures typically found in factories, facilities, and large commercial spaces. Its three‑phase design ensures protection across all phases for balanced loads, supporting safer and more predictable electrical performance in demanding environments.