AJH250E High Voltage DC Contactor-Aokai Electric

Main Contact Specification

Contact Arrangement	1K（1NO）
Contact Polarity	Non-polarity
Contact Resistance	≤0.5mΩ（at 250A）
Max. Switching Voltage	1000VDC
Max. Breaking Current	2000A (320VDC) 1次(Ops)
Electrical Endurance (Resistive Load)	3,000次(Ops) (1,000VDC, 250A)
	5,000次(Ops) (750VDC, 250A)
	8,000次(Ops) (750VDC, 250A)
Mechanical Endurance	300,000次(Ops)
Withstand Current	250A, Continuous
	400A, 60min
	500A, 5min
	1500A, 1s
Temperature Rise	Main Contact Temperature Rise≤55K(70mm²，250A Continuous)

Performance Parameter（at23℃）

Pickup Voltage		See Coil Parameter Tables
Dropout Voltage		See Coil Parameter Tables
Pickup Time		≤30ms
Contact Bounce Period		≤5ms
Dropout Time		≤10ms
Dielectric Strength	Between Main Contacts	10,000VDC 1min
	Between Main Contact and Coil	3500VDC 1min
Insulation Resistance	Initial State	100MΩ 1min
	After Electrical Life	50MΩ 1min
Shock	Stability	20g (Power On)
	Strength	50g
Vibration		10g, 10~500Hz, 1/2 Sine Wave (Power On)
Relative Humidity		5%~95%RH
Temperature		-40℃~85℃
Load Terminal		M8 External Thread
Weight		约About 480g
Dimension		80x65.5x72.5mm

Auxiliary Contact Parameter

Aux. Contact Arrangement	FK/FB/FZ (1NO/1NC/1CO)
Aux. Contact Rated Current	5A
Aux. Contact Max. Breaking Voltage	120VDC

AJH250E Coil Parameter

Coil Voltage	Pickup Voltage VDC	Dropout Voltage VDC	Coil Resistance	Starting Power	Holding Power
9-36V	9-36V	5-7V	3.3Ω±10%	25W±10%	3.0W±10%

Model Coding

Outline Installation Dimension Drawing

Without Auxiliary Switch

With Auxiliary Switch

Wiring Diagram

Product Packaging Specifications

Product

Model

Packaging

Min. QTY of

Inner Packaging

Carton Size

(LxWxH cm)

Net Weight/PCS

(Max.) g

Total QTY

(pcs)

Net Weight

(Max.) kg

Gross Weight

(Max.) kg

AJH250E

Pearl Cotton+Carton

10 PCS/Layer

53.5x23x20

490

9.8

10.6

Note:

1、Multiple typical packaging specifications for each product category are only listed as examples for reference.

2、The actual weight of the packaging may fluctuate with environmental temperature and humidity. For specific batch weights, please contact your dedicated sales representative.

Usage Cautions

1、Regarding the application of this product, please select the matching product according to your specific use conditions and environmental requirements when selecting the product. If the requirements are not clearly specified, please contact AOKAI to obtain more technical support.

2、When installing and using this product, regardless of wiring or fixed installation, it is required to use anti-loose spring washers

3、The torque for installing fasteners should be within the standard range required by this specification. It may cause the unstable installation or damaging the product if the torque is lower than the minimum torque or higher than the maximum torque.

4、Do not install the contactor in places with strong magnetic fields (such as transformers or strong magnets), or close to objects with thermal radiation. It is recommended to use it with a cooling fan.

5、It is forbidden to use the product in an environment with oil pollution, especially before wiring, it will seriously affect the main terminals conductivity if they are polluted by oil pollution, and affect the product life.

6、It is forbidden to use the product beyond the rated electrical life. When the rated electrical life is reached, although the product can continue to work, there is a risk of failure, explosion, and burning because of non-breaking.

7、When the main circuit voltage is ≥48V, if the H suffix appears on the product label, it means that the main circuit wiring has the current direction, and the "+" terminal or the terminal with red paint must be connected to the positive pole of the power supply (battery).

8、This product cannot be used as a protector, and the circuit must be connected with a protector in series when using.

9、AOKAI only does the resistive electrical life verification and quality assurance. When the product is used in an environment with inductive load or capacitive load, it is recommended that the circuit should be connected in parallel with a surge protection device.

10、After continuous work, restart immediately after disconnection, the pickup voltage will be affected due to the heating state of the product, and it is reasonable that the pickup voltage will increase.

11、It is strictly prohibited to wiring when power on

12、In principle, please do not use the contactor when it has dropped (height≥30cm).

13、AOKAI reserves the right to change the product. Customers should confirm the content of this specification before the first order, and can ask our company to provide a new specification if necessary.