ICP 2-Pole 30A Contactor for RGS120LDCB0AAA — 24V Coil | Ships Today

Overview

This is a genuine OEM 2-pole definite-purpose contactor (part number 1178074) for the ICP/Tempstar/Heil RGS120LDCB0AAA. Rated for 30 amps per pole with a 24-volt control coil, the contactor is the electromagnetic switch that energizes the high-voltage circuit when the thermostat or control board calls for operation. When the 24V coil is energized, the contacts close and pass line voltage to the connected load; when the call ends, the spring-loaded contacts open. Contactors are one of the most common failure points in HVAC equipment because the contacts arc and pit every time they open and close. Symptoms of a failing contactor include chattering or buzzing, contacts that weld shut (equipment runs continuously), pitted or blackened contacts, or a coil that no longer pulls in the contacts.

Specifications

Compatibility

Direct OEM replacement for the ICP/Tempstar/Heil RGS120LDCB0AAA gas furnace and related family models. Always confirm the part number on your existing contactor matches 1178074 before ordering, and verify the coil voltage and amp rating against your equipment's wiring diagram.

Installation Guide

1. Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter before touching any wiring.
2. Access — Remove the service panel to expose the control compartment.
3. Document — Photograph all line and low-voltage wire positions before disconnecting anything.
4. Remove — Label and disconnect the line, load, and 24V coil leads, then unscrew the old contactor from its mounting bracket.
5. Install — Mount the new contactor, then reconnect each wire exactly per your photo and labels.
6. Test — Restore power and confirm the contacts pull in cleanly on a call with no chatter.

Signs You Need a Replacement

• Loud buzzing, humming, or chattering from the contactor when energized
• Equipment runs nonstop because the contacts have welded closed
• Visibly pitted, burned, or blackened contact points
• Coil energizes but the contacts fail to pull in

Shipping & Returns

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