Professional Intelligent Manufacturer of High and Low Voltage DC Contactors - Aokai Electric
250A ADK250 SPST NC Emergency Switch
Theory: Mechanical Switch
Usage: Emergency Stop
IP Protect Level: IP40
Rated Current: 250A
Contact Form: SPST-NC
Size: 60.5mmx43.5mmx125mm
Mechanical Life: 50,000 Ops
Electric Life: 6,000 Ops
Quality Control: ISO9001, IATF16949
Brand & Logo: AK
Features
◪ Continuous 250A load, contact rated voltage ≤72V.
◪ It has one set of normally closed contact.
◪ The insulation resistance reaches 100MΩ (500VDC), and the withstand voltage between the load contacts is 1.5kV.
◪ IP protection level: IP40.
◪ Compliant with IEC 60664-1, GB/T14048.1 and GB/T14048.4 requirements.
◪ Compliant with RoHS (2015/863/EU), REACH (1907/2006/EC) requirements.
◪ Safety certificate: CE.
Specification
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Performance Parameters (at 23℃) |
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Contact Arrangement |
1B (1NC) |
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Contact Resistance |
≤0.5mΩ |
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Contact Voltage Drop |
≤80mV (at 250A) |
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Overload Current |
≤7le, ≯1s |
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Temperature Range |
-40℃~85℃ |
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Load Terminal |
M8 Internal Thread |
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Humidity |
5%~95%RH |
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External Dimension |
60.5mmx43.5mmx125mm |
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Operating Duty |
Continuous |
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Electrical Durability with Load (Resistive) |
≥6,000 Times |
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Closing Pulling Force |
20N≤F1≤50N |
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Disconnecting Pushing Force |
20N≤F2≤50N |
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Normal Closing Time |
≤100ms |
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Normal Disconnecting Time |
≤50ms |
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Dielectric Strength Between Main Contacts |
50Hz/60Hz 1,500VAC/1min |
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Insulation |
Initial State |
100MΩ 1min |
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After Electrical Life |
50MΩ 1min |
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Shock |
Stability |
20g (Power On) |
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Strength |
50g |
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Vibration |
2.5g, 5~50Hz, 1/2 Sine Wave (Power On) |
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Mechanical Durability |
≥50,000 Times |
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Mounting Screw Torque M5 |
3-4N.m |
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Load Wiring Torque M8 |
8-10N.m |
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Product Introduction
This series Emergency Switch is used to connecting and emergency disconnecting of DC power supply systems of various vehicles and equipment, such as electric forklifts, electric vehicles, excavators, etc.
Model Coding
Wiring Diagram
Outline Installation Dimension Drawing
Note: These datas are only for customer selection reference, AOKAI has tried the best to ensure the accuracy of the information. Product specifications and parameters may be changed due to product improvement etc., they may be inconsistent because of not updated in time. For the specific parameters and performance of each product, please refer to the samples provided by AOKAI and the corresponding signed and controlled specification.
