Siemens ND63F120 Circuit Breaker

Siemens ND63F120 is a three-pole molded‑case circuit breaker in the Sentron ND frame, rated for 1,200 A at up to 600 V AC. This high‑current device provides thermal‑magnetic protection for three‑phase feeders and equipment in industrial power distributions, helping prevent overloads and short circuits in demanding environments. As part of Siemens’ ND family, the ND63F120 is designed for integration into standard ND frame enclosures and mounting schemes used on Siemens panels and industrial switchgear. Typical applications include protection of motor feeders, large distribution feeders, and process‑control circuits in manufacturing, data centers, and other heavy‑duty facilities where robust, continuous operation is essential. The model designation conveys a 3‑pole, 1,200‑amp, 600‑volt capability compatible with Siemens Sentron hardware.