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:

• Eaton: C25DNF340B
• GE: CR453AD3HBB
• Siemens / Furnas: 45GG30AF
• Packard: C340B
• Mars: 17424
• Hartland Controls: HCCY3XQ04GG303
• Grainger: 6AZU8

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.