Refrigerator Parts [Lifetime Warranty] 3 Pole FLA Contactor 40 Amp 240 VAC Coil Condenser Compressor AC Definite Purpose Contactor - Fits Relays, Air Conditioner, Heat Pump
3 pole 40 amp definite purpose contactor with 240 VAC coil for air conditioner and heat pump compressors.
3 pole 40 amp definite purpose contactor with 240 VAC coil for HVAC air conditioner and heat pump systems.
3 Pole 40 Amp 240 VAC definite purpose contactor with technical specification icons for AC and heat pump systems.
3 pole 40 amp definite purpose contactor for air conditioner and heat pump replacement.
Technician installing a 40 Amp 3 pole definite purpose contactor in an air conditioner condenser unit.
3 pole 40 amp definite purpose contactor with silver alloy contact points for AC and heat pump systems.
3 pole 40 amp definite purpose contactor with high-quality protective plastic cover for AC and heat pump systems.
3 pole 40 amp definite purpose contactor with 240 VAC coil for air conditioner and heat pump compressors.
3 pole 40 amp definite purpose contactor with 240 VAC coil for HVAC air conditioner and heat pump systems.
3 Pole 40 Amp 240 VAC definite purpose contactor with technical specification icons for AC and heat pump systems.
3 pole 40 amp definite purpose contactor for air conditioner and heat pump replacement.
Technician installing a 40 Amp 3 pole definite purpose contactor in an air conditioner condenser unit.
3 pole 40 amp definite purpose contactor with silver alloy contact points for AC and heat pump systems.
3 pole 40 amp definite purpose contactor with high-quality protective plastic cover for AC and heat pump systems.
Lifetime Warranty

[Lifetime Warranty] 3 Pole FLA Contactor 40 Amp 240 VAC Coil Condenser Compressor AC Definite Purpose Contactor - Fits Relays, Air Conditioner, Heat Pump

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3 Pole FLA Contactor 40 Amp 240 VAC Coil Condenser Compressor AC Definite Purpose Contactor

Key Features

  • Electrical Rating: 40 Amp Full Load Amps (FLA)
  • Poles: 3 Pole, Single Throw (3PST)
  • Coil Voltage: 240 VAC
  • Operating Frequency: 50/60 Hz
  • Enclosed contacts for resistance to dust and debris
  • Durable, insulated housing
  • Universal mounting footprint for versatile installation

Replaces / Cross-Reference Part Numbers

Replaces definite purpose contactors with matching 3-pole, 40A, and 240V AC coil specifications. Compatible with models from manufacturers including:

  • 42CF35AG
  • C25DNF340T
  • C25DND340B
  • 9-3185-2
  • L36-692
  • E1C25DNF340B

Compatibility & Fitment

Designed for use in residential and commercial HVAC systems. This component controls high-voltage power to:

  • Air conditioner compressors
  • Condenser fan motors
  • Heat pump compressors
  • Crankcase heaters
  • Other high-power resistive and motor loads

When to Replace

  • Outdoor condenser unit does not start when the thermostat calls for cooling
  • Audible buzzing or chattering from the contactor without unit activation
  • Compressor or fan motor runs continuously and will not shut off
  • Visible signs of damage, such as pitting, arcing, or melted housing
  • Failed continuity test across terminals when the coil is energized

Installation Tips

  • Disconnect all electrical power to the HVAC unit at the circuit breaker and service disconnect before installation.
  • Verify power is off using a multimeter.
  • Photograph or label the wiring configuration of the old contactor before removal.
  • Transfer wires from the old contactor to the corresponding terminals on the new one.
  • Ensure all line, load, and coil connections are secure to prevent overheating and arcing.
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  • Perfect fit

    Perfect fit

    Our Contactor can replace 1 pole contactor rated at 20A 25A 30A 32A, (below or equal to 32A) on air conditioners and heat pumps.
  • Premium quality

    Premium quality

    The Contactor is made of strong silver alloy which is oxidation resistant, high conductivity, and corrosion resistant.
  • Saving solution

    Saving solution

    Effortlessly energize your machine with our Contactor - BlueStars brings DIY solutions to help you deal with any trouble.
  • Simple installation

    Simple installation

    Our product is designed to be easily removed and replaced, allowing for quick and convenient maintenance.
ENJOY COMFORTABLE LIVING AND CHERISH ANY MOMENTS

ENJOY COMFORTABLE LIVING AND CHERISH ANY MOMENTS

BlueStars - #1 source of high-quality electrical parts

FAQ

This contactor is an electrically controlled switch used to turn high-voltage power on and off to major loads such as an air conditioner condenser, compressor, or heat pump components. When the 240 VAC coil is energized by the control circuit, the contacts close and allow line voltage to pass through the load side terminals.
Match the key electrical specifications on your original part: it must be a 3-pole contactor, rated for 40 amps FLA, with a 240 VAC coil. You should also confirm the terminal layout, mounting style, and wire connections match your existing contactor. The safest method is to compare the information printed on the old contactor's label with this part before ordering.
Common signs include the outdoor unit not starting, the compressor or condenser fan not receiving power, chattering or buzzing from the contactor, visibly burned or pitted contacts, or a unit that stays stuck on because the contacts have welded closed. In some cases, the thermostat may be calling for cooling but the high-voltage circuit never engages.
Contactor failure is commonly caused by normal contact wear from repeated cycling, voltage spikes, overheating, arcing across the contacts, insect or debris contamination, moisture exposure, or excessive current draw from the compressor or fan motor. If a new contactor fails quickly, the underlying load or control voltage should also be checked.
For someone experienced with HVAC or electrical repairs, it is usually a straightforward replacement. Typical tools include insulated screwdrivers, needle-nose pliers, and a multimeter to verify power is off and confirm coil voltage. Many replacements take about 15 to 45 minutes, but working inside HVAC equipment involves hazardous high voltage, so power should be disconnected at the breaker and disconnect before service.
Before installation, verify the old contactor's coil voltage, amp rating, pole count, and wiring layout. Inspect the wire terminals for heat damage, loose spades, or corrosion. It is also wise to check the capacitor, compressor amperage draw, condenser fan motor condition, and incoming voltage, since a failing component elsewhere can contribute to contactor damage.
Yes, a definite purpose contactor of this type is commonly used in both air conditioner and heat pump systems, as long as the equipment requires a 3-pole contactor with a 40 amp rating and a 240 VAC coil. Always confirm the original electrical specs and connection style on your unit before installation.