The ABB catalog number OT125F4C is a manual change-over switch designed for 125 amps. This switch features an open transition mechanism, providing a reliable way to manually transfer loads between two power sources. Please note that the handle and shaft for operation are sold separately, so be sure to order those components if needed. Distributed by BSP Automation, this switch is ideal for applications where a straightforward and dependable manual transfer solution is required. It’s sometimes referred to by its alternative part number, 417019391843. If you need a solid and simple transfer switch, this one’s definitely the way to go.