Eaton C25DND330B (42BF35AG) Contactor

The Eaton C25DND330B Definite Purpose Contactor is a warehouse standard for service technicians requiring a high-performance 3 pole 30 amp contactor. Built to handle inductive full load currents up to 30A and resistive loads up to 40A, this unit is a direct electrical and dimensional replacement for the Siemens 42BF35AG and Furnas 42BF35AG. Designed for the rigorous demands of HVACR motor control, it features a 208/240V AC coil compatible with 50/60Hz frequencies, ensuring stable switching in both residential and light commercial power environments.

This Eaton C25 series component is engineered with an open-type enclosure and a rugged metal mounting plate for straightforward panel installation. The non-reversing contactor design includes double quick-connect terminals and screw/pressure plate options for high-torque field wiring. For complex retrofits, the C25DND330B supports side-mounted auxiliary contacts, making it a versatile choice for commercial air conditioning, refrigeration, and pump control systems where reliability is non-negotiable.

• Universal Compatibility: Drilled to match the industry-standard "E" frame footprint, replacing most definite purpose contactors without modifying mounting holes.
• Enhanced Durability: Features an encased design to protect internal components from dust and environmental debris common in mechanical rooms.
• Flexible Connectivity: Side-by-side quick-connect and screw terminals simplify HVAC contactor replacement in tight control cabinets.
• Verified Performance: Rated for up to 10HP at 230V (3-phase), meeting UL, CSA, and CE standards for global industrial applications.

What can I use to replace a Furnas 42BF35AG?
The Eaton C25DND330B is the primary cross-reference for the 42BF35AG, offering identical physical dimensions and electrical ratings for a drop-in fit.

Can this contactor handle 40 amps?
This unit is rated for 30A inductive (motor) loads, but it is qualified for up to 40A resistive (heating) loads, providing overhead for varying equipment specs.

Are auxiliary contacts available for this model?
Yes, the C25D series is designed to accept snap-on side auxiliaries (NO/NC configurations) for secondary logic signaling or status monitoring.

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.