TECO Electric & Machinery Co., Ltd. RHU-10 25A1 Thermal Overload Relay

The TECO RHU-10 25A1 Thermal Overload Relay provides precise protection for three-phase motors (rated for 50/60 Hz) guarding against overload and phase-failure conditions in TECO motor control systems and is designed for use with TECO magnetic contactors and direct-on-line starters. It features an adjustable current setting of 20–25 A, automatic ambient temperature compensation, selectable manual or automatic reset, and an integrated TEST/STOP function to safeguard motors against sustained overcurrent. This relay includes 1 normally open and 1 normally closed auxiliary contact, an IP20 finger-safe protective cover, and mounting options for direct contactor mount or independent base mount, making it suitable for system integrators seeking flexible installation. Certified to IEC 60947-4-1 with UL, cULus, CSA, TÜV, RU, and cRUus approvals, it is commonly used in manufacturing plants, water and wastewater facilities, HVAC systems, compressors, pumps, conveyors, and other industrial motor protection circuits, and compatible replacements include TECO RHU-10 21.5A1, RHU-10 30A1, and RHN-180 25A1.