1 Pole Contactor 40 Amp 24VAC Coil
1 pole 40 amp contactor with 24VAC coil and metal mounting base.
1 pole 40 amp contactor with 24VAC coil shown in an informational product graphic for HVAC systems.
Front view of a 1-pole 40 Amp contactor with a 24VAC coil and copper winding.
Technician installing a 1 pole 40 amp 24VAC contactor in an air conditioning unit to fix common AC symptoms.
40 Amp 1 pole contactor with 24VAC coil and silver alloy internal components.
Close-up of a 1 pole 40 amp contactor with a 24VAC coil and protective plastic housing.
Woman relaxing on a couch under an air conditioner with text overlay promoting AC repair parts.
1 pole 40 amp contactor with 24VAC coil and metal mounting base.
1 pole 40 amp contactor with 24VAC coil shown in an informational product graphic for HVAC systems.
Front view of a 1-pole 40 Amp contactor with a 24VAC coil and copper winding.
Technician installing a 1 pole 40 amp 24VAC contactor in an air conditioning unit to fix common AC symptoms.
40 Amp 1 pole contactor with 24VAC coil and silver alloy internal components.
Close-up of a 1 pole 40 amp contactor with a 24VAC coil and protective plastic housing.
Woman relaxing on a couch under an air conditioner with text overlay promoting AC repair parts.

1 Pole Contactor 40 Amp 24VAC Coil

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$17.59
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$17.59
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1 Pole Contactor 40 Amp 24VAC Coil

Key Features

  • Poles: 1
  • Amperage Rating: 40 Amp (Full Load Amps)
  • Coil Voltage: 24 VAC
  • Frequency: 50/60 Hz
  • Terminals: Box lugs and spade terminals
  • Includes a protective cover to prevent contact with live parts
  • Operating Temperature Range: -40°C to 65°C (-104°F to 150°F)

Replaces / Cross-Reference Part Numbers

  • Packard C140A
  • TCDP401B6
  • Westinghouse DW401A-120
  • Serves as a universal replacement for most residential single-pole definite purpose contactors with matching electrical specifications.

Compatibility & Fitment

  • Designed for HVAC, air conditioning units, heat pumps, refrigeration systems, and other motor load applications.
  • Direct replacement for any 1-pole contactor rated at 40 amps or less (e.g., 25A, 30A) with a 24 VAC coil.
  • Ensure pole count, amperage, and coil voltage match the original unit for proper fitment.

When to Replace

  • Outdoor AC unit or compressor fails to start.
  • A continuous humming or buzzing sound comes from the outdoor unit without the fan or compressor engaging.
  • Visible signs of damage, such as burnt contacts, pitting, or melted casing.
  • The contactor makes chattering or rapid clicking noises when energized.

Installation Tips

  • Safety Warning: Disconnect all electrical power to the unit at the main breaker panel before beginning installation.
  • Verify the specifications of the new contactor match the old part.
  • Photograph or label all wire connections before disconnecting the old contactor.
  • Connect high-voltage wires to the corresponding line and load terminals.
  • Connect the low-voltage control wires to the coil terminals.
  • Ensure all electrical connections are tightened securely.
1 Pole Contactor 40 Amp 24VAC Coil 1
1 Pole Contactor 40 Amp 24VAC Coil 2
1 Pole Contactor 40 Amp 24VAC Coil 3
1 Pole Contactor 40 Amp 24VAC Coil 4
  • 1 Pole Contactor 40 Amp 24VAC Coil 1

    Perfect fit

    Our Contactor can replace 1 pole contactor rated at 20A 25A 30A 35A 40A, (below or equal to 40A) on air conditioners and heat pumps.
  • 1 Pole Contactor 40 Amp 24VAC Coil 2

    Premium quality

    The Contactor is made of strong silver alloy which is oxidation resistant, high conductivity, and corrosion resistant.
  • 1 Pole Contactor 40 Amp 24VAC Coil 3

    Saving solution

    Effortlessly energize your machine with our Contactor - BlueStars brings DIY solutions to help you deal with any trouble.
  • 1 Pole Contactor 40 Amp 24VAC Coil 4

    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

Compatible Models

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Manufacturer
BlueStars
Package Dimensions
3.5 x 3.46 x 2.13 inches
Item Weight
9.6 ounces
Batteries required
No
Included Components
1 Pole Contactor 30 Amp 24VAC

FAQs

This contactor is designed for definite purpose applications, primarily in HVAC systems, refrigeration units, heat pumps, and hot tubs. It is rated for 40 Amps inductive load and 50 Amps resistive load, making it suitable for high-duty cycle switching.
Common symptoms of a failing contactor include the HVAC unit failing to start, a loud buzzing or chattering noise coming from the electrical panel, or the unit running continuously even when the thermostat is satisfied. If you notice pitted or burnt contact points, or if the coil has an open circuit, the contactor should be replaced.
Before installation, ensure the power supply to the equipment is completely disconnected at the breaker. Verify that your system requires a 24VAC coil voltage. It is also recommended to inspect the wire terminals for any signs of heat damage or corrosion; if the wires are brittle or burnt, trim them back to clean copper or replace the connectors to ensure a secure, low-resistance connection.
Installation typically requires a screwdriver (flathead or Phillips depending on the terminal screws), a wire stripper/crimper if you need to replace the push-on connectors, and a multimeter to verify that power has been successfully cut to the unit before you begin work.
This is a 1-pole, 40 Amp contactor with a 24VAC coil (50/60Hz). It is rated for up to 600VAC and is compatible with motor loads up to 10HP at 240V. The unit features heavy-duty lug terminals for secure power connections and push-on terminals for the control circuit.
Yes, this is a universal definite purpose contactor. As long as your existing unit is a 1-pole, 40 Amp model with a 24V coil, this part will function as a drop-in replacement regardless of the original manufacturer's branding.