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50A DC Reversing Contactor, 2 pole, 12V/24V/48V

4.7 out of 5 based on 4 reviews | Write a review

$74.31

Two pole DC reversing contacor with 2 sets of switching contacts, 2NO and 2NC form, 50 amps rated load current of contact circuit, coil rated voltage with 12V/24V/48V DC for selection. Cheap price and manufacturer direct sale.

Coil Rated Voltage *

SKU: ATO-DCCON-R50

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Delivery date: 6-12 days

The provided 50A DC reversing contactor with 2NO and 2NC contact type, coil voltage available in 12 volt, 24 volt, 48 volt. It is used to change the direction of rotation in direct current motors, start them gently and to monitor their load. Widely used in auto electric winch, telecommunication equiment, engineering machinery and other electric control system.

Specifications

Basics	Model	ATO-ADC50
	Body Size	815276 mm
	Weight	410 g
Technical Parameters	Coil Rated Voltage	12V/24V/48V
	Contact Circuit Rated Load Current	50A
	Contact Rated Load Voltage	12V~60V DC
	Contact Form	2NO and 2NC
	Starting Current	≤4 A
	Overload Current	≤8 le
	Coil Power	≤8 W
	Main Contact Voltage Drop at 50A Load	≤80 mV
	The Allowed Range of Coil Voltage	±20%
	Pull-In Time (N/O Contacts to Open)	≤20 ms
	Drop-Out Time (N/O Contact to Close)	≤10 ms
	Insulation Resistance	≥50 MΩ
	Dielectric Withstanding Voltage	50Hz/60Hz 1500VAC/Min
	Electric Life	Continuous 30000 times
	Mechanical Life	300 thousand times
Environment	Operating Temperature	-40℃~85℃
Environment	Operating Humidity	5~95% RH

DC Reversing Contactor Circuit Diagram

Installation Diagram (Unit: mm)

Details

Tips: Short circuit of the contactor, how to solve?

Possible causes of the fault:

The contactor works in the environment of damp, dust, steam, or corrosive gases.
The arc chute damages or falls, load short leads to the contact short of the contactor.
Incorrect operation of the positive and reverse contactor, as well as unreliable interlocking, make two contactors to pull in at a same time when reversing.

Maintenance method:

Improve the working environment and keep clean.
Match an arc-extinguishing equipment again.
Handle the load short failure.
Recheck the contactor's interlocking circuit, change the operation mode.

DC Reversing Contactor for DC Motor Forward/Reverse Control
The reversing type of DC contactor has been designed for direct current loads, particularly motors as used on electric vehicles such as industrial trucks. In this video, ATO will show you how to use a DC reversing contactor for the DC motor forward and reverse control.

Electromagnetic Switches: Relays VS. Contactors

In this video we will try to clear the confusion many people have between relays and contactors by showing you how to tell the difference based on five criteria: Definition, Capacity, Structure, Contacts and Applications.

Existing reviews of 50A DC Reversing Contactor, 2 pole, 12V/24V/48V

Coil functionality

I am working on a project that involves a linear actuator that uses 10 amps and 24 volts DC. I would like to use your SKU: ATO-DCCON-R50. I would like to know if the contacts in this unit interlock so that if I use the buttons on the system and pressing the "up" button activates one coil and pressing the "down" button activates the other coil, will it also activate the other coil and contacts?

From: Dorian | Date: 19/06/2025

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ATO Responded

Our contactor does not have the contact interlock feature you mentioned, it only controls one coil and the other coil is not activated.

How to test your DC reversing contactor?

Can you send me instructions on how to test your DC reversing contactor on my site before installation?

From: Kathleen | Date: 21/10/2019

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ATO Responded

Yes, will send you the instructions, and you can see videos on our YouTube channel. https://www.youtube.com/c/ATOcom.

Great little reversing DC contactor works exactly as represented

Great little reversing DC contactor works exactly as represented and is an excellent value for the price! Product was delivered on time and was very well packed.

From: Shawn Dalden | Date: 09/10/2018

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A good reversing contactor

This 50A contactor is a good reversing contactor, I bought to replace of my original Polaris winch part, easy to install, so far it is working great.

From: Marvin | Date: 30/05/2018

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