Tronic Rotary Changeover Switch 1000A, AC 415V

Our review

This is a heavy-duty rotary changeover switch from Tronic, rated at 1000 amps and 415 volts AC, built for manual on-load transfer between two power sources. It also allows selection between two loads and provides emergency breaking, plus safe isolation of downstream circuits so maintenance can be done without live exposure. The grey unit measures 350mm high by 455mm wide, so plan panel or enclosure space around those dimensions before ordering. It suits facilities running generator-to-mains or dual-supply setups where the current demand is high and operators want a physical, visible changeover rather than an automatic one. Before buying, confirm your supply voltage, actual load current, and whether your installation calls for on-load switching, since undersizing a changeover switch is a common and costly mistake. Compare it with automatic transfer switches if you need unattended switching, and with lower-rated rotary switches if your load is smaller. Check terminal arrangement, mounting method, and cable entry against your panel design, as these details are not listed here. Available on Sokonia.