Siemens 3NP407 Isolating Switch 600V 100A 3NP Series

Siemens 3NP407 is a three‑pole fuse‑switch‑disconnector (isolating switch) in the 3NP family, designed for low‑voltage distribution panels and switchgear where circuits must be isolated and protected. It is rated for up to 690 V AC and 100 A in typical configurations, complying with IEC 60947‑3 (F) and positioned within Siemens’ SENTRON low‑voltage safety‑switch portfolio. The 3NP4070 variant combines fuse elements with the switching device, providing both isolation and fuse protection for feeders and motor circuits in industrial control cabinets. This device is well suited for distribution boards, motor feeders, and control panels requiring safe disconnection and reliable overcurrent protection in a compact 3‑pole package.