What amp contactor do I need for my ICP system?

The correct replacement for ICP model RGS121SECB0AAA — 24V Coil | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your ICP equipment which lists the model number RGS121SECB0AAA — 24V Coil | Ships Today.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

ICP

ICP 2-Pole 30A Contactor for RGS121SECB0AAA — 24V Coil | Ships Today

Name: ICP 2-Pole 30A Contactor for RGS121SECB0AAA — 24V Coil | Ships Today
Brand: ICP
SKU: 1178074-GEN
Price: 29.95 USD
Availability: InStock

SKU: 1178074-GEN Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM 2-pole, 30-amp contactor with a 24-volt coil (part 1178074) is the electrical switch that energizes the compressor and condenser fan in your ICP RGS121SECB0AAA system. When the thermostat calls for cooling, 24V applied to the coil pulls the contacts closed and sends line voltage to the load. Over time the silver contacts pit, burn, and weld from arcing, and the coil can fail open. Symptoms include a system that won't start, a humming or chattering contactor, contacts that stick closed so the unit runs nonstop, or burnt-smelling, pitted terminals. This direct-fit 30A / 24V replacement restores reliable switching.

Specifications

Spec	Value
Part Number	1178074
Type	2-pole definite purpose contactor
Brand	ICP / Heil / Tempstar
Contact Rating	30 Amps
Coil Voltage	24 VAC
Poles	2
Fitment	OEM exact-fit

Compatibility

Fits the ICP / Tempstar / Heil RGS121SECB0AAA and other systems specifying a 2-pole, 30A, 24V coil contactor. Confirm pole count, amp rating, and coil voltage against your existing unit before ordering.

Installation Guide

Safety First — Disconnect power at the disconnect and breaker; verify zero voltage at the contactor terminals with a multimeter.
Access — Remove the electrical service panel.
Document — Photograph all line, load, and coil wiring before disconnecting.
Remove — Unfasten the old contactor and transfer wires one at a time, or label each lead.
Install — Mount the new contactor, land each wire on the matching terminal per your photo, and torque connections snugly.
Test — Restore power, call for cooling, and confirm the contactor pulls in cleanly and the compressor/fan energize.

Signs You Need a Replacement

System won't start or starts intermittently
Humming, buzzing, or chattering from the contactor
Pitted, burned, or welded contacts
Unit runs continuously because contacts are stuck closed

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

ICP 2-Pole 30A Contactor for RGS...

$29.95

Frequently Asked Questions

Does this Contactor fit my ICP RGS121SECB0AAA — 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RGS121SECB0AAA — 24V Coil | Ships Today. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the contactor on my ICP RGS121SECB0AAA — 24V Coil | Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.

My AC clicks but the compressor won’t turn on. What’s wrong?

Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.

Is this contactor compatible with Bryant or Payne too?

Many ICP parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my ICP contactor?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

Menu