Tronic Thermal Overload Relay 37-50A

Our review

This Tronic thermal overload relay is a motor protection device that trips when current climbs beyond a set level, shielding motors and machinery from the heat that overcurrent brings. Its 37 to 50 ampere range puts it in the territory of small to medium three-phase motors, so it suits workshop equipment, pumps, compressors and similar drives rather than household circuits. Before buying, confirm your motor's full-load current falls inside that band and that the relay's trip class and mounting style match your starter or contactor setup, since those details decide whether it will actually protect your equipment. Compare it with other thermal overload relays by checking current adjustability, reset type and how well it pairs with your existing contactor. Available on Sokonia.