| Parameter | Value |
|---|---|
| Model | EVQ7A-400G |
| Brand | ALQ |
| Rated Current | 400 A |
| Max. Switching Voltage | 1000 V DC |
| Rated Load Voltage (Ue) | 12 - 1000 V DC |
| Power Contact Arrangement | SPST-NO-DM (Single Pole Single Throw, Normally Open, Dual Make) |
| Auxiliary Contact Arrangement | SPST-NO / SPST-NC / None (optional) |
| Coil Voltage Rating (Optional) | 12 V DC / 24 V DC / 48 V DC |
| Coil Characteristics | Single coil |
| Dimensions (L x W x H) | 88.0 x 72.7 x 103.0 mm |
| Mounting Type | Modular |
| Contact Resistance (Initial) | Typical value 1 mΩ |
| Electrical Life | DC 450 V: 10,000 cycles; DC 750 V: 1,000 cycles |
| Origin | Jiangsu, China |
| Warranty | 1 year |
| Typical Applications | Energy storage systems, EV charging equipment, industrial vehicles, solar energy, frequency conversion equipment |
Rated 400 A continuous current at 1000 V DC, with up to 2000 A max cut-off capacity at 1000 V. Delivers reliable high-voltage, high-current DC control for energy storage and EV charging systems.
Equipped with a built-in TVS surge absorption circuit to protect the coil from voltage transients, so no external surge suppression is required.
Engineered for high-cycle operation: 200,000 mechanical cycles and up to 4,000 break cycles at 450 V DC / 400 A on resistive load, reducing downtime and maintenance.
Epoxy packaging with nitrogen-protected contacts prevents oxidation and provides strong arc-cooling, ensuring long-term contact reliability under frequent switching.
Fully sealed enclosure rated IP67 & IP69K with salt fog testing per MIL-STD-810 and 20 G shock resistance, ready for harsh outdoor, vehicle-mounted and washdown environments.
Operates from -40°C to +85°C with 5%-95% RH humidity tolerance and an altitude rating up to 4,000 m, installable in any direction for highland and extreme-climate projects.
CCC, TUV SUD, and CE (LVD) certified. Quality management system conforms to GB/T19001-2016 / ISO9001:2015.
Industrial Vehicles Electric forklifts, electric pallet trucks, electric aerial work platforms, intelligent logistics systems, automated guided vehicles (AGV), cold chain logistics equipment, industrial robots, electric tools, and electric golf carts. | DC Charging Equipment Chargers, small DC charging piles, monoblock DC charging piles, split-type DC charging piles (group charging), ultra-fast DC charging piles, and integrated DC charging piles for heavy-duty trucks. |
Energy Storage System Large-scale energy storage (generation-side, grid-side), medium-scale energy storage (industrial & commercial), small-scale energy storage (residential), and photovoltaic solar energy systems. | Frequency Conversion Equipment High-voltage frequency converters, power conversion systems (PCS), industrial rectifier power supplies, motor drives, and UPS systems. |
A: The EVQ7A-400G is rated for 1000 V DC maximum switching voltage and 400 A continuous current. It supports load voltages from 12 V to 1000 V DC, making it suitable for high-capacity energy storage, EV charging and industrial DC systems.
A: The contactor is available with 12 V DC, 24 V DC or 48 V DC coil voltage. Select the coil voltage that matches your control-system or battery-management voltage.
A: Yes. The power contact uses an SPST-NO-DM arrangement. An optional auxiliary contact is available in SPST-NO, SPST-NC or no auxiliary configuration for status feedback.
A: The EVQ7A-400G features an epoxy-sealed, nitrogen-protected construction rated IP67 and IP69K, with salt fog resistance and 20 G shock resistance for harsh outdoor and vehicle-mounted environments.
A: Yes. The EVQ7A-400G is designed for battery energy storage systems (ESS), DC fast charging equipment, solar inverters, power conversion systems (PCS) and other high-voltage DC applications.
A: Submit your required specifications (current rating, coil voltage, auxiliary contact type, and quantity) through the inquiry form or contact us via WhatsApp. Our engineers will respond within 24 hours. Sample lead time is [to verify with factory].
