ICP 2-Pole 30A Contactor for RGS120SRBA0AAA — 24V Coil | Ships Today
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Overview
This is a genuine OEM 2-pole, 30-amp contactor (part number 1178074) for the ICP/Heil/Tempstar RGS120SRBA0AAA gas furnace and its companion condensing unit. A contactor is an electrically controlled switch that uses a 24-volt control signal from the thermostat or control board to energize the high-voltage line circuit feeding the compressor and condenser fan motor. When the coil is energized, the contacts close and power flows; when the call for cooling ends, the contacts open. Over thousands of cycles, the silver contacts pit, corrode, and weld, and the 24V coil can burn open. Common failure symptoms include the unit failing to start, chattering or buzzing at the contactor, contacts that stick closed so the unit will not shut off, or visible arcing and burnt terminals.
Specifications
| Spec | Value |
|---|---|
| OEM Part Number | 1178074 |
| Type | Definite Purpose Contactor |
| Poles | 2-Pole |
| Contact Rating | 30 Amps |
| Coil Voltage | 24V |
| Brand | ICP (Heil / Tempstar / Comfortmaker) |
Compatibility
Engineered as a direct-fit replacement for the ICP RGS120SRBA0AAA and shared across many ICP-family condensing units and air handlers that use a 30A 2-pole 24V-coil contactor. Always verify your existing contactor's amp rating, pole count, and coil voltage against the part you are removing.
Installation Guide
- Safety First — Disconnect power at the breaker and disconnect, then verify zero voltage with a multimeter at the contactor terminals.
- Access — Remove the electrical service panel to expose the contactor.
- Document — Photograph all line, load, and 24V coil wires before disconnecting anything.
- Remove — Transfer wires one at a time to the new contactor, or label them, then unscrew the old contactor from its bracket.
- Install — Mount the new contactor and reconnect each wire exactly per your photo, confirming the 24V coil leads are on the coil terminals.
- Test — Restore power, place a call for cooling, and confirm the contactor pulls in cleanly with no chatter.
Signs You Need a Replacement
- Unit will not start or only starts intermittently
- Loud buzzing, humming, or chattering from the contactor
- Contacts stuck closed — system runs continuously
- Visible pitting, burning, or arcing on the contacts or terminals
Shipping & Returns
Ships same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days