ABB OS400J30 Switch

ABB OS400J30 is a three-pole, front-operated fusible disconnect switch in ABB's OS400 family. It combines a manual disconnect with Class J fuses to protect and isolate power circuits up to 600 V and 400 A. UL 98 and IEC 60947-3 compliant, this open-switch device is designed for installation in low-voltage distribution panels and industrial control gear where rapid isolation is required for maintenance or fault protection. The unit is front-operated, with the handle and shaft not included, and accepts Class J fuses to provide coordinated protection for feeders, motors, and similar loads. With three poles, it provides a straightforward, space-efficient means to interrupt power to a load while preserving panel layout and fault clearance. Typical applications include feeder protection in industrial distribution, motor control centers, and retrofit projects where ABB OS400 fuse blocks are used. This model is supplied as a switch-fuse assembly; be sure to verify voltage, current, and enclosure compatibility for your installation and consult the official ABB documentation for exact installation requirements and accessory options.