What amp contactor do I need for my ICP system?

The correct replacement for ICP model WCA3604GKA1 — OEM 1176763 | 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 WCA3604GKA1 — OEM 1176763 | 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 40A Contactor for WCA3604GKA1 — OEM 1176763 | Ships Today

Name: ICP 2-Pole 40A Contactor for WCA3604GKA1 — OEM 1176763 | Ships Today
Brand: ICP
SKU: 1176763-GEN
Price: 32.95 USD
Availability: InStock

SKU: 1176763-GEN Brand: ICP

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This is the OEM 40-amp definite purpose contactor (part number 1176763) for the ICP/Heil/Tempstar WCA3604GKA1 condensing unit. A contactor is the electrically operated switch that sends high-voltage power to your compressor and condenser fan motor whenever the 24V control circuit calls for cooling. This 2-pole unit is rated for 40 amps per pole with a 24-volt coil. When the contactor fails, the outdoor unit either won't start, buzzes without engaging, or sticks closed and runs continuously. Pitted, welded, or burned contacts are the most common cause of a no-cool condition on these systems.

Specifications

Spec	Value
OEM Part Number	1176763
Type	Definite Purpose Contactor
Brand	ICP / Heil / Tempstar
Poles	2-Pole
Contact Rating	40 Amps
Coil Voltage	24 VAC
Fits Model	WCA3604GKA1

Compatibility

Designed as the exact OEM replacement for the ICP/Tempstar/Heil WCA3604GKA1 air conditioner condensing unit. This 40A 2-pole 24V contactor is also a common service part across many ICP-family WCA-series outdoor units that use the same control voltage and amp rating. Always confirm your existing contactor's poles, amp rating, and coil voltage before installing.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect and breaker, then verify zero voltage with a multimeter.
Access — Remove the condenser service panel to expose the electrical compartment.
Document — Take a clear photo of all line, load, and coil wiring before disconnecting anything.
Remove — Label and disconnect the wires, then unscrew the old contactor from the mounting bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo (24V coil terminals, line/load on the poles).
Test — Restore power and verify the contactor pulls in on a cooling call and the compressor and fan energize.

Signs You Need a Replacement

Outdoor unit hums or buzzes but the compressor and fan don't start.
Visible pitting, burning, or melted plastic on the contactor body.
Contacts welded shut, causing the unit to run nonstop.
Chattering contactor or intermittent cooling that comes and goes.

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 40A Contactor for WCA...

$32.95

Frequently Asked Questions

Does this Contactor fit my ICP WCA3604GKA1 — OEM 1176763 | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP WCA3604GKA1 — OEM 1176763 | 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 WCA3604GKA1 — OEM 1176763 | 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