What amp contactor do I need for my ICP system?

The correct replacement for ICP model RH5420603 — 3-Pole 35A 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 RH5420603 — 3-Pole 35A 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 Contactor for RH5420603 — 3-Pole 35A 24V Coil | Ships Today

Name: ICP Contactor for RH5420603 — 3-Pole 35A 24V Coil | Ships Today
Brand: ICP
SKU: 1280465
Price: 32.44 USD
Availability: InStock

SKU: 1280465 Brand: ICP

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Overview

This OEM 3-pole contactor (part number 1280465) is the main line-voltage switch for the ICP/Tempstar/Heil RH5420603 condensing unit. On a cooling call, the 24-volt control circuit energizes the coil, closing three sets of contacts that power the compressor and condenser fan motor together. Its 35-amp-per-pole rating is sized for the startup inrush of a residential split-system compressor. Common failure signs include a unit that hums without starting, buzzing or chattering at the contactor, pitted or burned contacts, or a compressor that runs nonstop because the contacts have welded shut.

Specifications

Spec	Value
Part Number	1280465
Type	Definite Purpose Contactor
Brand	ICP / Tempstar / Heil
Poles	3-Pole
Contact Rating	35 Amp
Coil Voltage	24V

Compatibility

Engineered as a direct OEM replacement for the ICP/Tempstar/Heil RH5420603 system. The 35A 3-pole, 24V-coil design is also a frequent replacement across Carrier-family condensing units sharing the same definite-purpose footprint. Verify pole count, amp rating, and coil voltage against your existing contactor 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.
Document — Photograph all line, load, and coil wiring before disconnecting.
Remove — Label and disconnect each wire, then unbolt the old contactor from its bracket.
Install — Mount the new contactor and reconnect line, load, and 24V coil wires per your photo.
Test — Restore power and confirm the contactor pulls in cleanly and the compressor and fan start.

Signs You Need a Replacement

Loud buzzing, humming, or chattering at the contactor
Burned, pitted, or welded contacts
Compressor and fan won't start on a cooling call
Outdoor unit will not shut off (stuck contacts)

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. 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 Contactor for RH5420603 — 3-...

$32.44

Frequently Asked Questions

Does this Contactor fit my ICP RH5420603 — 3-Pole 35A 24V Coil | Ships Today?

Yes. This is the factory-specified OEM contactor for the ICP RH5420603 — 3-Pole 35A 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 RH5420603 — 3-Pole 35A 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.

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