Eaton C25DND330A (42BF35AF) Contactor

The Eaton C25DND330A is a commercial-grade 3-pole definite purpose contactor designed for high-cycle inductive loads in HVACR and industrial machinery. Engineered to handle 30-amp FLA (Full Load Amps) and 40-amp resistive loads, this unit features a 110/120V AC coil (50/60 Hz), making it a standard drop-in for most control circuits. This model is an open-frame non-reversing contactor built on a durable metal mounting plate, providing a stable footprint for panel-mount installations. It serves as the direct technical replacement for the CON-3/120/30 and shares identical specifications with the 42BF35AF. The dual-bore pressure plates and box lugs ensure secure terminations with copper or aluminum wiring, maintaining electrical continuity under high vibration. The compact Eaton C25 series design is optimized for motor control, resistive heating, and compressor switching where reliable phase-to-phase insulation is required.

• High-Amperage Capacity: Rated for 30A inductive loads and 40A resistive loads across all three poles.
• Universal Compatibility: Direct cross-reference for 42BF35AF and CON-3/120/30, ensuring zero-modification retrofits.
• Standard Coil Voltage: Operates on a 120V AC control circuit, compatible with most thermostat and relay outputs.
• Industrial Build Quality: Features an open enclosure with a rigid metal base for superior heat dissipation and structural integrity.
• Secure Terminations: Equipped with heavy-duty screw/pressure plate terminals to prevent lug overheating and arc-over.

Common Questions

Can I use this contactor for a 1-phase motor?
Yes, while this is a 3-pole contactor, it can be utilized for single-phase applications by using two of the three available poles. However, always verify that the FLA rating of the motor does not exceed 30 Amps.

What is the difference between this and the 42BF35AF?
There is no functional or electrical difference. The C25DND330A is the Eaton series designation, while 42BF35AF is the equivalent Furnas/Siemens part number. They share the same mounting footprint and electrical specs.

Will this coil work with a 24V transformer?
No, this specific model is equipped with a 120V AC coil. Attempting to trigger this contactor with a 24V signal will result in a failure to pull in the armature. Verify your control circuit voltage before installation.

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.