Eaton C25DND325A (42AF35AF) Contactor

The Eaton C25DND325A, also identified by the 42AF35AF part number, is a heavy-duty Definite Purpose Contactor engineered for reliable motor control in HVACR systems. This 3-pole 25 amp contactor features a 110/120V AC coil, making it a standard drop-in replacement for a wide range of air conditioning units, heat pumps, and refrigeration equipment. Built with silver cadmium oxide contacts, the C25 series ensures superior conductivity and arc suppression under high-cycle industrial loads. Its open-frame design allows for efficient heat dissipation, while the screw/pressure plate terminals and quick-connect lugs facilitate rapid field installation. Rated for 31.25 FLA (Full Load Amps) and 150-180 LRA (Locked Rotor Amps) at 240V, this Eaton Cutler-Hammer component provides industrial-grade durability for inductive loads. Whether you are performing a contactor replacement or a system retrofit, the C25DND325A meets UL, CSA, and CE standards for critical electrical performance.

• Universal Compatibility: Directly replaces 42AF35AF and other common DP series contacts from brands like Furnas and Square D.
• Enhanced Contact Life: High-performance alloy contacts prevent welding and pitting during frequent cycling.
• Flexible Mounting: The standard mounting footprint fits existing hole patterns in most condensing unit control boxes.
• Simplified Wiring: Combination terminals allow for either spade connectors or direct wire landing for secure electrical connections.

Can I use a 24V coil contactor to replace the C25DND325A?
No. This unit is specifically rated for a 120V coil voltage. Using a 24V coil in its place will result in immediate coil failure or failure to pull in the armature.

What is the difference between a 2-pole and 3-pole contactor?
A 3-pole contactor like this Eaton model breaks three legs of power simultaneously. It is typically required for three-phase equipment or specific single-phase applications where multiple circuits must be isolated.

Will this work for a 3-phase compressor?
Yes, provided the FLA rating of the compressor does not exceed 25 amps at your operating voltage and your control circuit is 120V.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.