ICP 2-Pole Contactor for RGS121HTBB0AAAA — 30A/40A 24V Coil | Ships Today
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Overview
This is a genuine OEM 2-pole definite-purpose contactor for the ICP Tempstar Heil RGS121HTBB0AAAA furnace/condensing unit. The contactor is the electrically operated switch that energizes the compressor and condenser fan motor whenever the thermostat calls for cooling. When the 24V control coil is energized, the contactor pulls in and closes its line-voltage contacts, sending power to the outdoor unit. This listing covers the OEM-specified 2-pole contactor available in 30A (part 1178074) and 40A (part 1178211) ratings with a 24-volt coil. Common failure symptoms include pitted or welded contacts, a chattering or buzzing coil, an outdoor unit that won't start, or one that won't shut off because the contacts have fused closed.
Specifications
| Spec | Value |
|---|---|
| OEM Part Numbers | 1178074 (30A), 1178211 (40A) |
| Type | Definite Purpose Contactor |
| Brand | ICP / Tempstar / Heil |
| Poles | 2-Pole |
| Contact Rating | 30A / 40A |
| Coil Voltage | 24V |
Compatibility
Engineered for the ICP Tempstar Heil RGS121HTBB0AAAA and other ICP-family condensing units using a 2-pole 24V-coil contactor. Confirm your existing contactor's amp rating (30A or 40A) and coil voltage before ordering to ensure an exact fit.
Installation Guide
- Safety First — Disconnect power at the disconnect and breaker, then verify zero voltage with a multimeter.
- Access — Remove the service panel on the condensing unit.
- Document — Photograph all wires before disconnecting.
- Remove — Note line, load, and 24V coil wire positions, then remove the old contactor from its bracket and transfer the wiring one terminal at a time.
- Install — Mount the new contactor, reconnect each wire per your photo, and confirm the coil leads land on the 24V terminals.
- Test — Restore power and call for cooling; verify the contactor pulls in cleanly and the unit runs.
Signs You Need a Replacement
- Outdoor unit won't start or hums without engaging
- Burnt, pitted, or welded contacts
- Loud chattering or buzzing from the contactor
- Compressor that won't shut off after the call ends
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