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EHJ400A | 400A 24V MZJ-400S DC Contactor
The EHJ400 (MZJ-400S) DC Contactor is designed for high-current DC switching applications in electric vehicles, renewable energy systems, and industrial power equipment. With a rated contact current of 400A and a maximum contact switching voltage of ≤80VDC, it delivers consistent, safe, and efficient power control.
With an optional auxiliary micro switch for system monitoring or control feedback. Built for long service life, the MZJ-400S offers dependable performance in demanding environments.
Specifications
| Specification | DATA |
|---|---|
| Model: | EHJ400 |
| Rated Contact Current: | 400A |
| Max Contact Switching Voltage: | ≤80VDC |
| Rated Coil Voltage: | 12V, 24V, 48V, 72VDC |
| Contact Arrangement: | 1 Form, SPST-NO |
| Auxiliary (Optional): | Micro switch |
Wiring Diagram
Dimension Drawing
Applications
The EHJ (MZJ) series DC Contactor is widely used for high-load DC switching in:
Electric Vehicles (EVs)
Main battery isolation and traction circuit control.
Forklifts & Material Handling Equipment
Power switching for lift and drive systems.
Renewable Energy Systems
Battery bank connection and disconnection in solar, wind, and hybrid setups.
Industrial DC Equipment
High-current motor and control circuit switching.
Backup Power Systems
Battery isolation and load control.
Battery Charging Infrastructure
High-capacity charger load management.
Why Choose Us as a DC Contactor Supplier?
Expertise in DC Power Components
Over a decade of specialization in DC contactors, circuit breakers, and electrical protection devices.
Strict Quality Control
100% testing before shipment to ensure safety and reliability.
Custom Voltage & Current Options
Flexible configurations to suit specific industrial and renewable energy needs.
Fast Global Shipping
Reliable logistics network for quick delivery to Europe, North America, and Asia.
Technical Support & Consultation
Professional engineers ready to provide installation and application guidance.
Competitive Wholesale Pricing
Designed to maximize value for distributors and industrial buyers.
FAQs
What is the rated continuous current of the EHJ400 (MZJ-400S)?
It can handle 400A continuously.
What is the maximum switching voltage?
≤80VDC.
What coil voltages are available?
12V, 24V, 48V, and 72VDC.
What does SPST-NO mean?
Single Pole Single Throw – Normally Open, meaning the circuit is open until the coil is energized.
Is there an auxiliary contact option?
Yes, an optional micro switch can be added for monitoring or control integration.
Can it be used for AC applications?
No, it is designed exclusively for DC systems.
Can it be mounted in any position?
Yes, but ensure proper cable routing and secure installation.
Is it RoHS compliant?
Yes, it meets RoHS environmental compliance standards.
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