Class J Fast Acting Fuse

Class J Fast Acting Fuse: Precision Protection for High-Demand Circuits

When protecting sensitive electrical systems, every millisecond counts. Our Class J Fast Acting Fuse delivers unmatched overcurrent protection for automotive and industrial applications, responding to faults in ≤20ms to prevent catastrophic damage. Engineered in Xi'an—China's historic hub of electrical innovation—these fuses combine 20+ years of R&D expertise with automotive-grade reliability. Whether you're safeguarding EV battery packs or solar inverters, our solutions meet rigorous global standards like IATF 16949 while offering customization flexibility.

Key Specifications

Why Our Class J Fuse Stands Out?

Lightning-Fast Response

Stop thermal runaway in EV batteries with ≤20ms interruption—critical for lithium-ion systems where delays risk fire hazards.

Built for Extreme Conditions

Ceramic bodies and silver-plated terminals withstand vibration, moisture, and temperatures up to 125°C.

Automotive-Grade Reliability

Developed under ITAF16949/VDA6.3 standards, our fuses undergo 1,000+ charge cycle simulations to ensure EV-ready durability.

Customizable Protection

Need 800V DC ratings or compact designs? Adjust voltage/current specs and form factors without compromising breaking capacity.

Where It Works Best?

• Electric Vehicles: Battery management, charging modules, and motor drives
• Renewable Energy: Solar inverters, wind turbine converters, energy storage systems
• Industrial Tech: Semiconductor manufacturing, robotics, and data center UPS

Why Partner With Xi'an Green Power?

 Heritage Meets Innovation

As pioneers of China's fuse industry, we blend state-owned enterprise rigor (China XD Group heritage) with cutting-edge R&D—like our 2018 breakthrough in Class J Fast Acting Fuse 500V/20kA water-cooled fuse tech.

Globally Certified, Locally Adaptable

Pre-certified variants meet EU (ECE R100), China (GB/T31465), and North America (UL/CSA) standards.

Rapid Turnarounds, Guaranteed

98% on-time delivery rate via optimized logistics, with regional warehouses to slash lead times.

Sustainable by Design

RoHS-compliant materials and energy-efficient production align with your green manufacturing goals.

Factory Strength

R&D Capabilities

Quality Certification

Delivery Packaging

Exhibition

Quick Answers to Common Questions

Q: Can you customize fuses for 800V+ EV systems?

A: Absolutely! Our GFP series already supports Porsche/Audi platforms with 50kA interrupting capacity.

Q: How do you ensure quality consistency?

A: Every batch undergoes pre-production sampling and final inspections per automotive-grade protocols.

Q: What's the MOQ?

A: Just 5 units for testing—ideal for prototyping. Bulk OEM orders ship in 15 days.

Q: Do you support custom certifications?

A: Yes—we've secured 100+ annual certifications for clients in 30+ countries.

Contact Us

Need a Reliable Class J Fast Acting Fuse Partner?

Email: fusemaker@163.com​​​​​​​

Trusted by EV leaders and renewable energy innovators, we're redefining circuit protection—one millisecond at a time.