Robertshaw 5500-182 TR-120-7 Thermal Relay TR-120-7

Robertshaw 5500-182 Uni-Kit TR-120-7 Thermal Relay TR-120-7 is a compact, temperature-activated switching device designed for use with Robertshaw 5500-series control systems. As part of the Uni-Kit 5500-182 assembly, the TR-120-7 thermal relay provides a thermally initiated path that opens or closes an electrical circuit to manage downstream control functions in heating equipment. This component is intended for installation in legacy Robertshaw equipment that employs the 5500 family controls, where precise thermal interlocks help govern furnace or air‑handling operations. The packaging suggests the relay is delivered with mounting hardware and terminal connections compatible with the 5500-182 kit layout, facilitating integration into the original control harness. For technicians replacing or stocking old Robertshaw parts, the 5500-182 and TR-120-7 designators identify this specific relay module and kit combination. When replacing, always consult the original equipment’s wiring diagram and service manual to confirm exact terminal connections and fit within the control assembly.