Eaton C25 Series Three-Pole No...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$164.71
Eaton C25 Series Three-Pole Non-Reversing Definite Purpose Contactor

Eaton C25 Series Three-Pole Non-Reversing Definite Purpose Contactor

(No reviews yet) Write a Review

Model: C25DND330A
$164.71

In Stock (leaves warehouse same day if ordered before 3pm ET)

$164.71
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Eaton C25 Series Three-Pole Non-Reversing Definite Purpose Contactor

The Eaton C25 Series Definite Purpose Contactor is a three-pole, non-reversing contactor engineered for HVAC, lighting, and general motor-control switching applications. Housed in an open configuration with a metal mounting plate for straightforward panel installation, this contactor family is offered across a range of current ratings, coil voltages, and terminal styles — including quick-connect terminals — to suit varied control needs. The C25 Series is UL Recognized for use in code-compliant electrical assemblies and is backed by RoHS-compliant construction.

Key Features

  • Pole Configuration: Three-pole design for switching multiple circuit legs in HVAC and motor-control circuits.
  • Connection Type: Quick-connect terminals for fast, reliable field wiring.
  • Coil Voltage: Offered in a range of control-coil voltages, including 24 volt, 110/120 volt, and 208/240 volt options, for standard low-voltage control circuits.
  • Current Rating: Available across a range of frame sizes and amperage ratings for flexible application matching within the C25 definite purpose contactor family.
  • Terminal Style: Offered with multiple terminal options, including standard, screw, and box lug styles, for versatile field wiring.
  • Enclosure: Open construction with a metal mounting plate for secure, direct panel mounting.
  • Switching Type: Non-reversing operation suited to standard load switching without directional control.
  • Compact Footprint: Space-conscious dimensions designed for efficient panel layouts.

Certifications & Compliance

  • UL Recognized
  • RoHS Compliant

Technical Specifications

  • Connection: Quick
  • Number Of Poles: Three-pole
  • Type: Non-reversing
  • Model: Contactor
  • Enclosure: Open with metal mounting plate
  • Warranty: 1 year
  • Certifications: UL Recognized
  • Compliances: RoHS Compliant

Typical Applications

  • HVAC Equipment Control Panels
  • Commercial and Industrial Motor-Control Circuits
  • Lighting Contactor Panels
  • Definite Purpose Switching Assemblies
  • Panelboard and Control-Cabinet Installations

Why Eaton?

Eaton's C25 Series definite purpose contactors combine a durable open construction with a metal mounting plate, quick-connect terminals, and flexible current and coil-voltage options, making them a practical choice for professional HVAC and motor-control installations. With UL Recognized and RoHS Compliant status, this non-reversing, three-pole contactor supports reliable, code-compliant switching performance in demanding commercial and industrial control panels.

Manufacturer Resources

Product Specs

Product Type:
Contactor
Configuration:
Three-Pole
Connection Type:
Quick Connect
Listing:
UL Recognized
Standards:
RoHS Compliant
Department:
Electrical
Product Group:
Starters & Contactors

Eaton C25DND330A – Frequently Asked Questions

1) What coil voltages does the Eaton C25 definite purpose contactor come in?
Coil options across the C25 three-pole non-reversing range are 24 volt, 110/120 volt, and 208/240 volt. For a condenser or air handler running a 24V thermostat circuit, pick a 24 volt coil (for example C25DND330T at 30A or C25FNF360T at 60A). Line-voltage control panels take the 110-120 or 208-240 coil, such as C25DNF340A (40A, 110-120) or C25DNJ350B (50A, 208-240). Coil voltage is the single most common thing people get wrong on a replacement, so match it to the control circuit, not the load.
2) What amperage ratings are available in the Eaton C25 three-pole contactor line?
Inductive full load ratings run from 25A up to 120A: 25, 30, 40, 50, 60, 75, 90 and 120 amps. Common HVAC picks are the 30A (C25DND330B) and 40A (C25DNF340B) frames; larger rooftop units, lighting panels and pump starters go to C25FNF375A at 75A, C25GNF390A at 90A, or C25HNE3120A at 120A. Size to the equipment nameplate FLA plus any code-required margin.
3) Can I use this contactor to reverse a three phase motor?
No. The C25 three-pole is a non-reversing contactor, so it switches the load on and off in one direction only. Reversing a three phase motor means swapping two line legs, which takes a reversing pair with mechanical and electrical interlock. Use the C25 for straight on/off switching of compressors, fans, heaters and lighting circuits.
4) I need to replace a failed contactor in a rooftop unit. How do I identify the right Eaton C25 part number?
Three things decide it: number of poles, coil voltage, and amp rating. Match the three-pole configuration, read the coil voltage off the old coil (24V, 110/120V or 208/240V), then match the inductive full load amps. The suffix on the C25 part number carries the coil: T is 24 volt, A is 110-120 volt, B is 208-240 volt. So a 40A unit on a 24V thermostat circuit is C25DNF340T, and the same frame on 110-120V control is C25DNF340A.
5) Will a three-pole contactor work on a single phase HVAC condenser?
It will. A three-pole contactor switches three legs, and on a single phase 240V unit you simply use two of the poles for L1 and L2 and leave the third unused, or land a third circuit on it. Techs often go three-pole for three phase equipment or where a spare switched leg is wanted. If the equipment is strictly single phase and the panel space is tight, a two-pole definite purpose contactor is the more compact fit.
6) Does this Eaton contactor come with an enclosure or do I need a box?
Open construction with a metal mounting plate, so there is no enclosure on it. It mounts directly inside an existing control panel, condenser cabinet, or panelboard. If the location is exposed, wet, or outdoors, you supply the rated enclosure separately.
7) What terminal type does the Eaton C25 contactor use for field wiring?
Quick connect terminals are the connection type on the C25 three-pole, which is what most residential and light commercial HVAC equipment uses, so spade terminals on existing wiring push straight on. The C25 family is also offered with screw and box lug terminal styles where larger conductors need to be landed, which matters more on the 75A to 120A frames.
8) Can these Eaton C25 contactors be used for a lighting contactor panel and not just HVAC?
Yes. Definite purpose contactors like the C25 are used for lighting contactor panels and general motor-control switching as well as HVAC equipment. For a lighting panel switching several branch circuits, the three-pole gives you three switched legs off one coil, and the higher frames (75A, 90A, 120A such as C25HNE3120B) cover heavier ballast and LED driver inrush loads.
9) Will a 50/60 Hz coil work on my control circuit?
The C25 coils are specified for 50/60 Hz operation, so they run on either standard supply frequency. That matters on export equipment or imported chillers running 50 Hz control power, where a 60 Hz-only coil would buzz or run hot. Coil voltage still has to match exactly; frequency tolerance does not excuse a voltage mismatch.
How fast can I get the Eaton C25DND330A delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton C25DND330A come with a warranty?
Absolutely. The Eaton C25DND330A is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton C25DND330A?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Eaton C25DND330A from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!