500A PV Blade Fuse

500A PV Blade Fuse is a high-current DC protection device designed for photovoltaic power systems, providing reliable overcurrent and short-circuit protection for utility-scale solar installations and industrial PV power networks. 

PV string aggregation protection systems
DC combiner box overcurrent protection
Inverter DC input protection circuits
Utility-scale photovoltaic power stations
Industrial renewable energy DC distribution systems
Battery energy storage system (BESS) DC-side protection
Grid infrastructure renewable energy integration systems 

Manufacturing Strength
Established in 1988, 38+ years of fuse manufacturing expertise
Specialized in circuit protection fuses for power and renewable energy systems
16,000 m² manufacturing base in Yueqing Economic Development Zone (China Electrical Capital)
20,000,000 units annual production capacity
~65% automated production lines for consistency and efficiency

R&D & Engineering Capability
In-house R&D center + advanced testing laboratory
42–48 patents including 5 invention patents
Development focus on high-voltage DC protection technologies
Self-developed high-breaking-capacity fuse solutions for new energy systems

Testing & Quality Assurance
High-current breaking capacity testing
Thermal cycling reliability validation
100% electrical performance inspection before shipment
Batch-level traceability system for quality control
Incoming material inspection for critical components (fuse element & insulation body)

Global Supply Capability
Export experience in 50+ countries and regions
1,200+ global customers
Stable supply chain for large-scale PV projects