22*58mm PV Fuse Holder

The 22x58mm PV Fuse Holder is a heavy-duty, high-capacity modular fuse base engineered specifically for high-power utility solar installations, centralized combiner boxes, and multi-megawatt energy storage systems. Designed to accommodate large 22x58mm cylindrical gPV solar fuses, this holder safely manages the extreme thermal and electrical loads of high-current DC sub-arrays up to 1500V DC, providing rugged contact retention and touch-safe isolation during fault clearing and system maintenance. 

High-Amp Double-Clamping Contacts: Built with thick-gauge silver-plated copper contacts reinforced by stainless steel external spring rings. This multi-layer clamping mechanism prevents contact relaxation caused by extreme thermal expansion and contraction, locking contact resistance below 0.8 milliohms to avoid localized hot-spots at 125A full load.
UL 94-V0 Non-Tracking Matrix: Molded from premium, high-molecular-weight engineering thermoplastic with excellent Comparative Tracking Index (CTI) ratings. The housing maintains high structural integrity under continuous 130 degrees C internal temperatures and eliminates structural carbon tracking under 1500V DC strain.
Finger-Safe Isolation Shroud: Features a robust, deep-pocket flip-front hinge layout that achieves an IP20 protection rating. When opened for maintenance, the fuse cartridge completely isolates the live terminal plates, providing full physical protection for field technicians against high-voltage DC feedback loops.
Severe Climate Durability: The outer housing compound is embedded with proprietary chemical UV-stabilizers and moisture-resistant agents. It successfully passes extended accelerated weathering cycles (ASTM standard testing) without cracking, chalking, or loss of dielectric strength in high-altitude or desert solar fields. 

We deliver engineered components with adaptable manufacturing parameters to match the supply chains of global EPCs and panel builders:

Multi-Pole Block Assemblies: Available as factory-locked 1-Pole, 2-Pole, or 3-Pole parallel configurations utilizing integrated mechanical links to simplify large-scale panel wiring layouts.
Integrated Blown-Fuse Indicator Lamps: Optional high-voltage neon or solid-state LED indicators can be built directly into the front flip cover (detecting open circuits from 1000V DC to 1500V DC) for instantaneous field troubleshooting.
High-Contrast Laser Markings: Continuous fiber laser engraving for custom product labels, client part numbers, wiring configuration schematics, and international regulatory markings that will not degrade over time.
Bespoke Terminal Adaptations: Custom box lugs or extended screw terminals can be supplied to facilitate direct connection with heavy solid busbars or non-standard flexible copper cabling. 

Established in 1988, Zhejiang Chifeng Electric Co., Ltd. is a premier manufacturer dedicated to pioneering fuse technology and delivering high-reliability circuit safety solutions globally.

Decades of Industry Expertise:
Backed by over 35 years of specialized fuse manufacturing experience, trusted by 1,200+ clients worldwide.
Robust Technical Barriers:
Armed with 48 authorized patents (including core invention patents) and 159 qualification certificates, supported by a 65% automation rate in production.
Global Compliance & Certifications:
Formally ISO9001 certified. All products fully comply with IEC 60269 and GB 13539 standards, and hold prestigious international safety marks including CCC, CE, CB, TÜV Rheinland, and UL.
End-to-End Capability:
Operating from a 16,000 m² state-of-the-art facility, we house an in-house R&D center, a dedicated testing lab, and high-precision breaking capacity test systems.
Direct-from-Manufacturer Advantage:
Factory-direct sales model minimizes intermediary markups, ensuring top-tier quality with optimal cost efficiency. 

We ensure predictable product availability and seamless logistical execution for large-scale utility infrastructure projects:

Minimum Order Quantity (MOQ): 200 units for standard stock specifications; 1000 units for customized colors or private branding.
Mass Production Throughput: Up to 100,000 units per month utilizing our automated multi-cavity injection molding equipment.
Industrial Export Packaging: Fuses holders are packed in molded shock-resistant trays, sealed in heavy-duty VCI moisture-barrier bags, and shipped in rigid 5-layer corrugated master cartons on export-ready plastic pallets wrapped in industrial stretch film.
Flexible Shipping Frameworks: Comprehensive shipping logistics provided under FOB, CIF, CFR, or complete door-to-door DDP (Delivered Duty Paid) terms, delivering directly to your project site or distribution center in North America, Europe, and Australia with all import tariffs fully cleared.
Complete Technical Documentation: Every shipment is accompanied by a Certificate of Compliance (CoC), Factory Acceptance Testing (FAT) records, and 3D STEP CAD models for seamless engineering layout integration.