ICP 2-Pole 30A Contactor for RGS121LSCB0AAA — 24V Coil | Ships Today

Overview

This OEM 2-pole definite purpose contactor (OEM #1178074) is the switching relay that energizes the compressor and condenser fan in your ICP RGS121LSCB0AAA system. When the thermostat calls for cooling, the 24V control circuit energizes the contactor coil, pulling the contacts closed and routing line voltage to the load. Rated at 30 amps per pole with a 24-volt coil, it handles the inrush and run current of residential compressors. A failing contactor is one of the most common HVAC service calls — symptoms include a buzzing or chattering noise, pitted or welded contacts that prevent shutoff, or a system that won't start because the coil has burned open. Replacing a worn contactor before the contacts weld is a low-cost way to protect a far more expensive compressor.

Specifications

Compatibility

Engineered as the factory replacement for the ICP RGS121LSCB0AAA and shared across many ICP-family units sold under the Tempstar, Heil, and Comfortmaker brands. Always confirm your existing contactor is a 2-pole, 30A, 24V coil unit before ordering.

Installation Guide

1. Safety First — Disconnect power at the breaker and disconnect, verify zero voltage with a multimeter.
2. Access — Remove the unit's electrical service panel.
3. Document — Photograph all wire terminals before disconnecting anything.
4. Remove — Note line, load, and 24V coil leads, then remove the old contactor from its mounting bracket.
5. Install — Mount the new contactor and reconnect each wire exactly per your photo.
6. Test — Restore power and confirm the contacts pull in on a cooling call and drop out cleanly when satisfied.

Signs You Need a Replacement

• Loud buzzing, humming, or chattering from the contactor
• Pitted, blackened, or welded contacts
• Compressor won't start or won't shut off
• Burned or open 24V coil (no continuity)

Shipping & Returns

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