The Trane CTR218 contactor is a 3-pole, 30 A definite‑purpose switch designed to energize and de-energize high-current HVAC loads. With a 208/240 VAC coil and 50/60 Hz operation, it serves as an OEM replacement for the discontinued CTR284-138. It switches power to compressors, condenser fan motors, blower motors, and electric heaters in Trane air conditioners, heat pumps, rooftop units, and packaged HVAC equipment. Mounted on a panel, this 3-pole contactor is used in commercial, residential, and industrial systems where reliable motor control and electrical isolation are essential.
