How do I know if this is the right contactor for my AC unit?

If your old contactor has a 24V Coil and is rated 40A, 30A, or 25A. This 40A model is a heavy-duty upgrade for lower amp units. Rule: Coil voltage must be exact; Amps can be higher, but never lower than your original one.

My air conditioner runs on 220V/240V power. Why does this say "24V Coil"? Will it work?

Yes. The "24V" refers to the thermostat signal (Coil), not the main power, 240V is for the motor. This contactor is rated up to 600V, so it easily handles your 220V/240V AC unit.

Does it matter which wire goes where on the coil? Is there polarity?

No. Since the coil operates on AC (Alternating Current), there is no polarity. You can connect the two low-voltage control wires to the side coil terminals in any order.

Will this fit my [Carrier/Trane/Goodman] unit? The holes need to match.

Yes, in most cases. This contactor uses a universal mounting base. As long as your old unit is a 2-Pole contactor with a 24V Coil, this will fit and function correctly, regardless of the brand (Carrier, Trane, Goodman, etc.)

My old contactor buzzes/hums — will replacing it fix that?

Often yes. Buzzing can be caused by a worn coil/armature, pitted contacts, or low control voltage. Replacing the contactor commonly resolves noise if the control voltage is stable and wiring is correct

Sunlee Sunlee 45gg20aj 2 Pole 40 Amp 30 Amp 24

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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฿1779

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

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Description

⚡ Upgrade your HVAC game with SunLee’s powerhouse contactor!

BUILT TO LAST - Class F insulation rated at 155°C outperforms typical Class B competitors
ROBUST CONSTRUCTION - High-performance bulk molding compound base stronger than standard bakelite
POWERHOUSE PERFORMANCE - Handles up to 40 amps for reliable HVAC control
PRECISION VOLTAGE MATCH - 24V coil designed for seamless integration with major HVAC systems
UNIVERSAL COMPATIBILITY - Direct replacement for top brands like Siemens, Square D, and Goodman

The SunLee UL 2 Pole 40 AMP 24VAC Coil Contactor is a durable, high-performance relay designed for HVAC systems, offering 40 amps current rating, 24V coil voltage, and superior Class F insulation for enhanced heat resistance. Compatible with leading brands, it ensures reliable operation and long-lasting durability in air conditioning, heat pump, and refrigeration applications.

Specifications

ASIN	B0886C1K17
Best Sellers Rank	#178,971 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #77 in Furnace Replacement Relays
Brand	SUNLEE
Brand Name	SUNLEE
Coil Voltage	24 Volts
Connector Type	Screw
Connector type	Screw
Contact Current Rating	40 Amps
Contact Material	Silver
Contact Type	Normally Open
Contact material	Silver
Contact type	Normally Open
Current Rating	40 Amps
Current rating	40 Amps
Customer Reviews	4.6 out of 5 stars 867 Reviews
Manufacturer	sunlee controls
Maximum Switching Current	40 Amps
Maximum Switching Voltage	24 Volts
Minimum Switching Voltage	24 Volts
Model	DRC-2XQ04CC
Mounting Type	DIN Rail Mount
Mounting type	DIN Rail Mount
Operation Mode	Automatic
Specification Met	UL
Wattage	960 watts

Reviews

C**N

El producto es de buena calidad, pero no lo pude usar.

Resulta que en la descripción decía que tenía bobina de 24 Voltios y llegó de 240 Voltios. Lo demás está bien.

22.10.2024

A**A

Great product

Works perfect for outside lights 240 volt.

27.06.2026

M**Y

Good quality and a good value

My sunlee 2 pole contactors arrived promptly and in good condition. They are quality items and my heat pump is working quite nicely with them. The fit was identical to the original contacts. A good value.

16.08.2026

R**E

good stuff

worked as expected. I use it as replace in an old sauna and it works as expected. Thats all I want.

31.05.2026

L**N

Best replacement

Works great bigger than OEM . This is a much heavier relay than the OEM and much cheaper in price but I think it is better in quality.

11.09.2026

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฿1779

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

2 days ago

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3 weeks ago