ICP 2-Pole Contactor for RGS121HEBB0AAAA — 30A & 40A 24V OEM | Ships Today

Overview

These are genuine OEM 2-pole definite purpose contactors for the ICP / Tempstar / Heil RGS121HEBB0AAAA system, available as the 30-amp 1178074 (CONTACTOR 2P 30A 24V) or the 40-amp 1178211 (CONTACTOR 2P 40A 24V). Both use a 24-volt control coil. A contactor is the heavy-duty relay that switches line voltage to the compressor and condenser fan motor whenever the 24V control circuit energizes its coil. Over years of cycling, the silver contacts pit, weld, or burn, and the coil can fail — leaving the unit dead, stuck running, or buzzing. Select the amp rating that matches the contactor currently installed in your equipment.

Specifications

Compatibility

Direct-fit replacement for the ICP RGS121HEBB0AAAA system and related Tempstar, Heil, and Comfortmaker units using a 2-pole, 24V-coil contactor. Confirm whether your unit uses the 30A or 40A rating and that the coil is 24V before ordering.

Installation Guide

1. Safety First — Disconnect power at the disconnect and breaker. Verify zero voltage at the contactor line terminals with a multimeter.
2. Access — Remove the electrical-compartment service panel.
3. Document — Photograph all line, load, and 24V coil wiring before disconnecting.
4. Remove — Label and disconnect each wire, unscrew the old contactor, and lift it out.
5. Install — Mount the new contactor and reconnect line, load, and coil leads exactly per your photo.
6. Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor and fan energize without chatter.

Signs You Need a Replacement

• Compressor and condenser fan will not start on a cooling call.
• Loud buzzing or chattering from the contactor.
• Pitted, blackened, or welded contacts that stick closed.
• Unit runs continuously and will not shut off.

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.