Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 40 A - Non-Reversing Definite Purpose Contactors
EATONNon-Reversing Definite Purpose Contactors

EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 40 A

The EATON C25 Series C25CNB140B is a non-reversing definite purpose magnetic contactor with 1 + N poles, designed for HVACR applications. This single-phase contactor features a 208-240V AC coil voltage, a 40 A…

SKU 3G-OTH-43610

Brand
EATON
Item
Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 40 A
Category
Non-Reversing Definite Purpose Contactors
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

EATON
Manufacturer Part Number
C25CNB140B
Series
C25 Series
Type
40 A, Non-Reversing
AC
208-240V
Phase
Single
Frame Size
C
Coil Voltage
208-240V AC
Contactor Style
HVACR Definite Purpose Contactor
Main Pole Contact Form
1NO
Maximum Voltage Rating
690V AC
Terminal Connection Type
Quick-Disconnect Terminals
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

EATON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The EATON C25 Series C25CNB140B is a non-reversing definite purpose magnetic contactor with 1 + N poles, designed for HVACR applications. This single-phase contactor features a 208-240V AC coil voltage, a 40 A rating, and a maximum voltage rating of 690V AC. It has a 1NO main pole contact form, a C frame size, and quick-disconnect terminals for wiring.

Frequently Asked Questions

What is the EATON C25CNB140B definite purpose contactor used for?

The EATON C25CNB140B is a definite purpose magnetic contactor designed for HVACR applications such as air conditioning, refrigeration, and heating systems. It controls single-phase motor loads up to 40 A with a 208-240V AC coil, providing reliable switching in commercial and industrial equipment.

What are the specifications of the EATON C25CNB140B contactor?

The EATON C25CNB140B is a non-reversing definite purpose contactor with 1 + N poles, 40 A rating, 208-240V AC coil voltage, and 690V AC maximum voltage. It features a C frame size, 1NO main pole contact form, and quick-disconnect terminals. It is part of the C25 Series and is single-phase.

Where to buy the EATON C25CNB140B contactor worldwide?

You can source the EATON C25CNB140B contactor through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide this EATON C25 Series component for HVACR applications.

How to install the EATON C25CNB140B definite purpose contactor?

To install the EATON C25CNB140B, ensure power is off and the coil voltage matches your 208-240V AC supply. Mount the contactor securely using the C frame holes, connect wires to the quick-disconnect terminals per the wiring diagram, and verify the 1NO main pole contacts are correctly aligned. Follow standard HVACR safety practices.

Used in

Common applications for EATON
Industrial control panels — Eaton M22 flush push buttons for momentary machine start/stop commands
Motor control centers — Eaton NEMA reversing starters with electronic overloads for conveyor belt direction control
HVAC systems — Eaton definite purpose starters with thermal overloads for compressor and fan motor protection
Process automation — Eaton SL7 tower lights with IP66 bases for visual status indication in wet environments
Machine tool signaling — Eaton 10250T LED pilot lights with push-to-test for operator panel status lamps
Access control — Eaton M22 keyed selector switches for equipment mode selection in secured areas

EATON Products

3G Electric supplies EATON non-reversing definite purpose contactors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 25 A, Non-Reversing (MPN C25CNB125B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 25 A, Non-Reversing (MPN C25CNB125B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 2 Poles, 208-240V AC, 20 A, Non-Reversing (MPN C25BNB220B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 2 Poles, 208-240V AC, 20 A, Non-Reversing (MPN C25BNB220B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 120V AC, 25 A, Non-Reversing (MPN C25CNB125A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 120V AC, 25 A, Non-Reversing (MPN C25CNB125A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 24V AC, 40 A, Non-Reversing (MPN C25CNB140T). Key specifications — Brand: EATON; Coil Voltage: 24V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 24V AC, 40 A, Non-Reversing (MPN C25CNB140T). Key specifications — Brand: EATON; Coil Voltage: 24V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 2 Poles, 208-240V AC, 30 A, Non-Reversing (MPN C25BNB230B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 2 Poles, 208-240V AC, 30 A, Non-Reversing (MPN C25BNB230B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 2 Poles, 208-240V AC, 40 A, Non-Reversing (MPN C25BNB240B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 2 Poles, 208-240V AC, 40 A, Non-Reversing (MPN C25BNB240B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.

More from EATON

View all EATON parts →
EATON Definite Purpose Magnetic Contactor: 3 Poles, 120V AC, 50 A, Non-Reversing (MPN C25DNJ350A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: D; Terminal Connection Type: Box Lugs; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON
EATON Definite Purpose Magnetic Contactor: 3 Poles, 120V AC, 50 A, Non-Reversing (MPN C25DNJ350A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: D; Terminal Connection Type: Box Lugs; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON
EATON
EATON Definite Purpose Magnetic Contactor: 3 Poles, 208-240V AC, 60 A, Non-Reversing (MPN C25FNF360B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: F; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON
EATON
EATON Definite Purpose Magnetic Contactor: 2 Poles, 120V AC, 20 A, Non-Reversing (MPN C25BNB220A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: B; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 1 Poles, 120V AC, 30 A, Non-Reversing (MPN C25ANB130A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: A; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 1 Poles, 120V AC, 30 A, Non-Reversing (MPN C25ANB130A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: A; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 4 Poles, 120V AC, 30 A, Non-Reversing (MPN C25END430A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: E; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON
EATON Definite Purpose Magnetic Contactor: 4 Poles, 120V AC, 30 A, Non-Reversing (MPN C25END430A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: E; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON Definite Purpose Magnetic Contactor: 4 Poles, 208-240V AC, 25 A, Non-Reversing (MPN C25END425B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: E; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON
EATON Definite Purpose Magnetic Contactor: 4 Poles, 208-240V AC, 25 A, Non-Reversing (MPN C25END425B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: E; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Three.
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 120V AC, 40 A, Non-Reversing (MPN C25CNB140A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 120V AC, 40 A, Non-Reversing (MPN C25CNB140A). Key specifications — Brand: EATON; Coil Voltage: 110-120V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 30 A, Non-Reversing (MPN C25CNB130B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.
EATON
EATON Definite Purpose Magnetic Contactor: 1 + N Poles, 208-240V AC, 30 A, Non-Reversing (MPN C25CNB130B). Key specifications — Brand: EATON; Coil Voltage: 208-240V AC; Contactor Style: HVACR Definite Purpose Contactor; Frame Size: C; Terminal Connection Type: Quick-Disconnect Terminals; Maximum Voltage Rating: 690V AC; Series: C25 Series; Phase: Single.