ADE400 Locomotive Contactors

Locomotive contactors are essential components in the electrical systems of locomotives. These contactors play a critical role in controlling the flow of electricity to various parts of the train, ensuring efficient and safe operation.

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For a long time, the company has won extensive trust and support from customers with its ever-increasing innovation capabilities, stable quality assurance capabilities, professional customization capabilities, timely delivery capabilities and high-quality after-sales service system. Volkswagen, Komatsu, Dongfeng, GOODWINCH, TMAX and other major companies have formed close strategic partnerships.The company has strong research and development capabilities, precise production equipment, advanced production technology, sophisticated testing equipment and a million-level purification workshop. There are more than 20 series of products with a total of more than 1000 specifications, such as high and low voltage DC contactors, power switches, connectors, etc, it is widely used by customers in new energy electric vehicles and supporting charging stations and charging piles, photovoltaic and wind power generation systems, energy storage power stations, battery packs, electric forklifts, electric winches, battery cars, electric locomotives, UPS, medical equipment, communication power supplies, Inverter, power backup and other fields, and are exported to Asia, Europe and America.Today, all Okai people are refreshed and enterprising! Facing the market and customers, we have only one promise: Okay, let the electricity be in control!

Locomotive contactors are essential components in the electrical systems of locomotives. These contactors play a critical role in controlling the flow of electricity to various parts of the train, ensuring efficient and safe operation.
Functions of Locomotive Contactors:
Locomotive contactors are responsible for switching on and off the power supply to different electrical devices in the locomotive, such as traction motors, lighting, heating, and ventilation systems. The contactors work by providing a mechanical link between the electrical circuitry and the control system, allowing the latter to turn the power supply on or off, depending on the required operation.
Types of Locomotive Contactors:
1. Main Contactors: These contactors handle high voltage and current levels, controlling the flow of power to the traction motors that drive the train.
2. Auxiliary Contactors: These contactors are used to control electrical devices with low voltage and current requirements, such as lighting and ventilation systems.
3. Emergency Stop Contactors: These contactors are designed to stop the train immediately in case of an emergency, cutting off the power supply to all systems.
4. Reversing Contactors: These contactors are used to reverse the direction of the train, switching the power supply to the opposite direction.
Design and Construction of Locomotive Contactors:
Locomotive contactors are designed to withstand high levels of vibration, shock, and temperature variations, typical of the harsh operating conditions in which locomotives operate. They are constructed using durable materials such as copper, silver, and steel, and are enclosed in robust casings to protect them from external elements. Additionally, some contactors feature arc quenching devices to prevent arc formation during switching operations, minimizing the risk of electrical hazards.

Electrical Characteristics
Insulation Resistance	Contact	1000MΩ(1000VDC)
	Contact and Coil	1000MΩ(1000VDC)
	Contact and Housing	1000MΩ(1000VDC)
Dielectric Withstand Voltage	Disconnect Contacts	3000VAC/1min
Dielectric Withstand Voltage	Contact and Coil	2500VAC/1min

Mechanical Characteristics
Shock	Stability	196m/s² ;98 m/s
	strength	490 m/s
vibration	10~500Hz 49 mm/s

life expectancy
mechanical life	200,000 cycles
resistive load life (switching)	3 × 10 ³times(400A,450VDC)
	1 × 10 ³times(400A,750VDC)
capacitive load life (closed only)	-
	-

conditions of use
working environment temperature	-40 ℃ ~ +85 ℃
Working Environment Humidity	5% RH ~ 85% RH
Protection Level	IP67
Overall Dimension	113.6mm × 64.7mm × 74.9mm
Weight	≈ 850g

main contact parameter
contact form	1K	lead-out mode	M8 external thread M8 External Thread
standard contact resistance	≤ 10mΩ(@ 6VDC 20A)	rated load voltage	12-750VDC
rated load current	400A	maximum switching power	450V 135kW 750V 225kW
minimum load	1A 12VDC	standard continuous live current (40mm conductor)	400A
short-term overload current (40mm @ 40 ℃)		400A: continuous Continuous; 450A:60min; 600A:20min; 1200A:30s; 3000A:0.6s;

coil parameter
parameter name	standard voltage
parameter name	12VDC	24VDC
operating voltage	9~16	18~32
Maximum Voltage	16	32
Action Voltage	≤ 75%	≤ 75%
Release Voltage	≥ 8%	≥ 8%
Coil Resistance (10%)(Ω)	32	128
minimum starting current (a)	3.40	1.60
Transient Surge Current (A)	-	-
Average Holding Current (A)	0.37	0.18
Steady State Power Consumption (W)	4.5	4.5
Action Time (ms)	≤ 30	≤ 30
Release Time (ms)	≤ 10	≤ 10
Bounce Time (ms)	≤ 5	≤ 5