Premium 300A Epoxy HV Relay – High Voltage Switching Solution
- High-current capacity: 300A rating
- Voltage handling: 10kV rated, 12kV maximum switching
- Premium epoxy encapsulation for protection
- Low contact resistance: <0.5mΩ
- High insulation resistance: >1000MΩ
- Fast switching: <20ms operate time
- Wide temperature range: -40°C to +85°C
- Long mechanical life: 1,000,000 operations
- International certifications: UL, IEC, CE
Description
Introducing our top-tier 300A Epoxy HV Relay, engineered for exceptional performance in high-voltage applications.This premium relay boasts an impressive rated voltage of up to 10kV and a substantial rated current capacity of 300A, making it an industry-leading solution for power management systems. The 300A Epoxy HV Relay features a maximum switching voltage of 12kV, ensuring reliable operation even under demanding conditions. The innovative epoxy encapsulation provides superior insulation properties and protection against environmental factors, extending the product’s lifespan significantly.
Key Features of Our 300A Epoxy HV Relay
- High current carrying capacity of 300A for power-intensive applications
- Exceptional voltage handling up to 10kV rated voltage
- Premium epoxy encapsulation for superior insulation and environmental protection
- Low contact resistance ensuring minimal power loss
- Robust construction for extended operational lifespan
- Excellent arc suppression capabilities for enhanced safety
- Wide operating temperature range for diverse environments
- Compact design with high power density
- Quick and reliable switching performance
- Compliance with international safety and performance standards


Technical Specifications: 300A Epoxy HV Relay
| Parameter | Specification |
|---|---|
| Model Number | EHR-300-HV |
| Rated Current | 300A |
| Rated Voltage | 10kV DC/AC |
| Maximum Switching Voltage | 12kV |
| Contact Material | Silver Tungsten (AgW) |
| Contact Resistance | <0.5mΩ |
| Insulation Resistance | >1000MΩ |
| Dielectric Strength | 25kV between contacts and coil |
| Operate Time | <20ms |
| Release Time | <15ms |
| Mechanical Life | 1,000,000 operations |
| Electrical Life | 100,000 operations at rated load |
| Operating Temperature | -40°C to +85°C |
| Storage Temperature | -55°C to +125°C |
| Weight | Approx. 450g |
| Termination Type | Screw terminals |
| Safety Standards | UL, IEC, CE certified |
300A Epoxy HV Relay – At a Glance
- High-current capacity: 300A rating
- Voltage handling: 10kV rated, 12kV maximum switching
- Premium epoxy encapsulation for protection
- Low contact resistance: <0.5mΩ
- High insulation resistance: >1000MΩ
- Fast switching: <20ms operate time
- Wide temperature range: -40°C to +85°C
- Long mechanical life: 1,000,000 operations
- International certifications: UL, IEC, CE
Application Areas for 300A Epoxy HV Relay
The 300A Epoxy HV Relay is designed for demanding high-voltage applications across various industries.
Its robust construction and reliable performance make it ideal for:
- Power distribution and transmission systems
- Renewable energy systems (solar and wind power installations)
- Industrial automation and control systems
- High-voltage test and measurement equipment
- Medical equipment (X-ray machines, MRI systems)
- Electric vehicle charging infrastructure
- Railway and transportation electrification systems
- Power supplies and converters
- Capacitor bank switching
- Research and laboratory equipment
The exceptional performance characteristics of our 300A Epoxy HV Relay make it the preferred choice for engineers and system designers working with high-power circuits where reliability, safety, and durability are critical requirements.
Contact Info
- Phone: +86-0755-28029319
- Email: lingyuanbin@mingni.cn
- Address: 2nd Floor, Building 1, Jingsheng Industrial Zone, 119 Huafan Road, Dalang Subdistrict, Longhua District, Shenzhen.






