We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
EATON Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A - Reversing NEMA Contactors
EATONReversing NEMA Contactors

EATON Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A

SKU 3G-OTH-42069

Brand
EATON
Item
Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A
Category
Reversing NEMA 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
CN55KN3B
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

Frequently Asked Questions

What is the EATON CN55KN3B reversing magnetic contactor used for?

The EATON CN55KN3B reversing magnetic contactor is used to control the forward and reverse rotation of three-phase AC motors in industrial applications such as conveyors, hoists, and pumps. It combines two contactors in a single unit with mechanical interlocking to prevent simultaneous engagement, ensuring safe motor reversal.

What are the specifications of the EATON CN55KN3B contactor?

The EATON CN55KN3B is a reversing NEMA magnetic contactor with 3 poles, NEMA Size 3, rated 90 A at 240V AC. It is designed for heavy-duty motor control and complies with NEMA standards. The manufacturer part number is CN55KN3B, and it is built by EATON for reliable industrial switching.

Where to buy the EATON CN55KN3B contactor worldwide?

You can source the EATON CN55KN3B reversing 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 competitive pricing and reliable sourcing for this EATON component.

How to install the EATON CN55KN3B reversing contactor?

Install the EATON CN55KN3B on a clean, dry panel using appropriate mounting hardware. Ensure the coil voltage matches your control circuit (240V AC). Wire the motor leads to the T terminals and the line power to the L terminals, following the wiring diagram. Always de-energize the system before installation and consult a qualified electrician.

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 reversing nema 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 NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A, 480V AC (MPN CN55KN3C). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A, 480V AC (MPN CN55KN3C). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 240V AC (MPN CN55GN3BB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 240V AC (MPN CN55GN3BB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 24V AC (MPN CN55GN3TB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 24V AC (MPN CN55GN3TB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 1, 27 A, 24V AC (MPN CN55DN3TB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 1, 27 A, 24V AC (MPN CN55DN3TB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 120V AC (MPN CN55GN3AB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 120V AC (MPN CN55GN3AB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 208V AC (MPN CN55GN3EB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 2, 45 A, 208V AC (MPN CN55GN3EB). Key specifications — Brand: EATON.

More from EATON

View all EATON parts →
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 1, 27 A, 208V AC (MPN CN55DN3EB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 1, 27 A, 208V AC (MPN CN55DN3EB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A, 208V AC (MPN CN55KN3E). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A, 208V AC (MPN CN55KN3E). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 5, 270 A, 480V AC (MPN CN55SN3C). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 5, 270 A, 480V AC (MPN CN55SN3C). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 4, 135 A, 480V AC (MPN CN55NN3C). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 4, 135 A, 480V AC (MPN CN55NN3C). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 0, 18 A, 240V AC (MPN CN55BN3BB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 0, 18 A, 240V AC (MPN CN55BN3BB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A, 120V AC (MPN CN55KN3A). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 3, 90 A, 120V AC (MPN CN55KN3A). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 0, 18 A, 120V AC (MPN CN55BN3AB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 0, 18 A, 120V AC (MPN CN55BN3AB). Key specifications — Brand: EATON.
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 1, 27 A, 480V AC (MPN CN55DN3CB). Key specifications — Brand: EATON.
EATON
EATON NEMA Magnetic Contactor: Reversing, 3 Poles, NEMA Size 1, 27 A, 480V AC (MPN CN55DN3CB). Key specifications — Brand: EATON.