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These OEM contactors are the original-equipment switching relays for the ICP/Tempstar/Heil RGS303HDAA0AAAA system. The listing covers part 1171554 (2-pole, 30 amp, 24V coil) and part 1183142 (3-pole, 60 amp, 24V coil). A contactor uses the 24-volt control signal from the thermostat to close its main contacts and energize the compressor and condenser fan motor. Because it switches high-current loads thousands of times per season, the contacts eventually pit, arc, and burn. Failure symptoms include a system that won't start, a chattering or buzzing contactor, contacts welded closed so the compressor never shuts off, or visible arcing and melted housings. Installing the correct OEM contactor — matched to the right pole count and amp rating — restores clean, reliable switching and protects the compressor from damaging voltage drops.
| Spec | Value |
|---|---|
| Part Numbers | 1171554, 1183142 |
| Type | Definite Purpose Contactor |
| Brand | ICP / Tempstar / Heil |
| Poles | 2-Pole and 3-Pole |
| Amp Rating | 30A (2P) / 60A (3P) |
| Coil Voltage | 24 VAC |
| Fitment | OEM Replacement |
Direct OEM replacement contactors for the ICP/Tempstar/Heil RGS303HDAA0AAAA and equivalent units in the same family. Confirm whether your unit uses the 2-pole 30A (1171554) or 3-pole 60A (1183142) contactor, and verify the 24V coil rating before installing.
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.