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600A DC Contactor, 12V/24V/48V

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

$185.32

High current contactor, designed for DC loads, contact circuit rated load current is 600A, normally open (NO) or normally closed (NC) contact form which has excellent conductivity. Single pole contactor, cheap price and manufacturer direct sale.

Main Contact *

Coil Rated Voltage *

With Auxiliary Contact

1NO+1NC [+$20.65]

SKU: ATO-DCCON-C600

Qty:

30-day Returns

Free Shipping

Delivery date: 6-12 days

Overview
DC Contactors Catalog

Reliable DC contactor has NO or NC main contact, 600A high rated current, particularly used for electric vehicle, telecommunication equiment, car batteries, trains, ships, electronic control system.

Features

The DC contactor has the characteristics of small size, large load capacity, long service life and simple maintenance, and is very popular among users.
600 amps contactor complies with the requirements of the ministry standards JB2286-78, JB3974-85, YD/585-92, YD/T512-92. It has been tested in the factory and by relevant testing units and meets the requirements of the ministry standards. It has been used by users for many years to satisfy users to the maximum extent. Needed, reliable quality.
600A DC contactors are suitable for electric forklifts, battery trucks, tractors, excavators, brick making machines, cleaning vehicles, automotive air conditioners, communication power supplies, switch control of electronic control circuits of uninterruptible power supplies, electroplating power supplies and other systems.

Specifications

Model	ATO-SZJB600A	ATO-SZJ600A
Contact Form	Normally Closed (NC)	Normally Open (NO)
Coil Rated Voltage (DC V)	12V, 24V, 36V, 48V, 60V, 72V, 84V, 120V, 150V
Contact Rated Voltage (DC V)	≤60V
Contact 48V Circuit Rated Load Current (DC-1)	600A
Main Contact Contact Coltage Drop Under 100A Load	≥80mV
Cooling pull-in voltage (V), (20±5)℃	≥70%
Cooling release operating voltage (V), (20±5)℃	≥40%, ≤5%
40℃ Coil Operating Voltage Range	0.8-1.2Us
Power-on Action Time	20ms	30ms
Power-off Release Time	15ms	10ms
Maximum Bounce Time of Contact Connection	10ms
Maximum Bounce Time of Contact Disconnection	3ms
Insulation Resistance	20MΩ
Dielectric Strength	50Hz/60Hz 1000VAC 1minute
Maximum Breaking Capacity of Main Contact (Power on for 5ms)	2000A/5ms at 48V/DC
Coil Power Consumption (W)	Start: 200-240, Hold: 3-7	Start: 120-170, Hold: 6-13
Coil Temperature Rise (K)	≤45
Terminal Temperature Rise (K)	≤65
Electrical Life	20000 times
Mechanical Life	300,000 times
Work Specifications	Continuous
Contact Material	Silver Alloy
Load Terminal Type	M12 Screw
Coil Terminal Type	M4 Screw
Auxiliary Contact Rated Load (Optional)	2A/48V DC, 5A/24V DC, One Open and One Closed
Testing Agency Certification	CCC, CE, FCC, RoHS

Load Characteristic Curve

600A load characteristic curve

Installation Dimension Diagram

600A DC contactor installation dimension drawing

Wiring Diagram & Temperature Rise Curve Graph

600A DC contactor wiring

600A DC contactor temperature rise curve graph

Mechanical Capabilities and Usage Environment

Contact Terminal M8 Tightening Torque (Nm)	≯30.0 is appropriate
Coil Lead-out M4 Tightening Torque (Nm)	≯1.2 is appropriate
Ambient Temperature	-25~+70℃
Relative Humidity	+20℃ 98%
Vibration Frequency at Fixed Location	3G, 1～50Hz, amplitude 0.5mm
Impact	(60～100) times/min, acceleration ≤4g
Altitude	2000 meters
Installation Direction	Arbitrary
Protection Level	IP40 (equivalent to IEC60947)

Tips: Iron core of the contactor can't suck up, how to solve?

Possible causes of the fault:

Low power supply voltage.
Something is wrong with the contactor's control loop or the power supply can't be connected.
Contactor coil is broken or burned.
The contactor magnet is partly inflexible or the moving contact gets stuck.
Pressure of the contact spring is too large.

Maintenance method:

If there's a huge difference between the measured value and the coil's rated voltage, look up the reason from the power supply and adjust the voltage to the normal value.
Correct the contactor's control loop and connect it by the correct line; replaced the damaged electrical components.
Measure the coil resistance with a multimeter, if the current is too large, the coil shorts or breaks, please replace the coil.
Repair the mechanical fault of the contactor, remove the rusty part, add some lubricating oil to the movement mechanism; replaced the damaged electrical components.
Adjust the contact spring pressure according to technical requirements.

Download ATO DC contactors catalog.pdf

Existing reviews of 600A DC Contactor, 12V/24V/48V

E-type mounting

I am looking for the E-type mounting bracket shown in the mounting dimension diagram for the 600A contactor (ATO-DCCON-C600). The diagram shows two mounting methods: "M-type mounting" and "E-type mounting." I would like to purchase the E-type mounting version (the bracket is flush with the contactor body), but I cannot find the corresponding option on the product page. Does this contactor have an E-type mounting bracket? If so, how should I select it when ordering?

From: Enliss | Date: 25/03/2026

Was this review helpful? Yes No (0/0)

ATO Responded

Yes, the E-style mounting bracket is available. After placing your order, tell us your requirement "Mount in the form E." We will mark the DC contactor model ATO-SZJ600A-E. The E-style mounting bracket is available, and the price is the same.

Are we able to buy these separately?

We recently bought this 600A DC contactor from ATO. We are needing the optional add-on contact blacks that give this the normally open/closed option. Are we able to buy these separately?

From: Joherry | Date: 02/08/2022

Was this review helpful? Yes No (0/0)

ATO Responded

Sorry, the auxiliary contacts of our ATO-DCCON-C600 cannot be purchased separately. You could repurchase a DC contactor.

Can your 600A DC contactor be used for continuous duty?

Can your 600A DC contactor be used for continuous duty?

From: Pierrette | Date: 08/11/2021

Was this review helpful? Yes No (0/0)

ATO Responded

Yes, it can be used for continuous duty.

Worked great for dump trailer, shipped faster

This 600A 24 volt contactor worked great as a direct replacement for my dump trailer, and shipped faster than expected.

From: Thomas | Date: 04/06/2018

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