ABB OT400U02 Industrial Manual Control Switch

ABB OT400U02 is a front-operated, two-pole, 400 A non-fusible disconnect switch designed for manual isolation in industrial switchgear and distribution panels. It is part of ABB’s OT400 family of manual change-over and transfer switches, offering a robust, hand-operated solution for safety procedures and maintenance work. This model carries a 400 A current rating and is suitable for voltages up to 600 V, with UL 98 listing, which helps ensure compliance in many North American installations. The OT400U02’s compact two-pole configuration provides straightforward installation in panels or enclosures where reliable isolation is required before servicing equipment or performing diagnostic checks. Because it is non-fusible, it provides a simple path to open-circuit conditions without introducing a fuse element into the circuit path. The unit’s design emphasizes clear physical actuation and a durable mechanism to withstand industrial environments, making it a common choice for service engineers who need a dependable local disconnect in power distribution and control circuits within manufacturing facilities and process plants.