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These are the OEM contactors for the ICP / Tempstar / Heil RGS243HTAA0AAAA unit, covering the 2-pole 30A (1171554), 3-pole 40A (1172449), and 3-pole 60A (1183142) options. A contactor is the electrically operated switch that closes on a 24-volt control signal to pass line voltage to the compressor and condenser fan motor. Each cycle the contacts open and close under load, so they eventually pit, weld, or fail to pull in. A bad contactor is one of the most common no-cool callbacks: the unit may not start at all, may buzz without engaging, or may run continuously because the contacts have welded shut. All three options use a 24 VAC coil with the amperage and pole count matched to the unit's load.
| Spec | Value |
|---|---|
| Part Numbers | 1171554, 1172449, 1183142 |
| Type | Definite Purpose Contactor |
| Poles | 2-Pole and 3-Pole |
| Amperage | 30A / 40A / 60A |
| Coil Voltage | 24 VAC |
| Brand | ICP / Tempstar / Heil |
Designed for the ICP RGS243HTAA0AAAA model and ICP-family rooftop gas/electric units. Match the pole count and amp rating to your existing contactor — verify before ordering.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.