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

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SunLee SUNLEE 45GG20AJ 2-Pole 40 Amp 30 Amp 24 V AC Relay Replacement Relay for Air Conditioning Heat Pump Cooling System

Product ID: 368814078

Details

Connector type
Screw
Contact material
Silver
Contact type
Normally Open
Current rating
40 Amps
Mounting type
DIN Rail Mount

⚡40A heavy-duty current

🔌24V coil voltage

🛡️Class F 155°C coil insulation

฿1788

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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	#174,950 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #78 in Furnace Replacement Relays
Brand Name	SUNLEE
Coil Voltage	24 Volts
Connector Type	Screw
Contact Current Rating	40 Amps
Contact Material	Silver
Contact Type	Normally Open
Current Rating	40 Amps
Customer Reviews	4.6 4.6 out of 5 stars (861)
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
Operation Mode	Automatic
Specification Met	UL
Wattage	960 watts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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฿1788

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

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TrustScore 4.5 | 7,300+ reviews

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