22*58mm Solar Cylindrical Fuse

The 22×58mm Solar Cylindrical Fuse is a heavy-duty, gPV-rated DC protection component engineered for utility-scale and commercial photovoltaic (PV) systems. Designed to interrupt low overloads and high short-circuit faults, it delivers reliable circuit isolation in 1500VDC environments, including combiner boxes, central/string inverters, and Battery Energy Storage Systems (BESS). 

99.99% Pure Silver Element: Maximizes electrical conductivity while minimizing power dissipation (Power loss less than or equal to 12W at 100A), preventing localized heat buildup inside combiner boxes.
95% Alumina Ceramic Body: Offers a tensile strength of over 200MPa and thermal shock resistance up to 300°C, eliminating risks of body cracking during high-energy arc interruption.
Controlled Quartz Grain Size: Filled with chemically treated, vibration-compacted quartz sand (0.2mm to 0.5mm grain size) to ensure instantaneous arc cooling and zero restrike. 

We provide end-to-end manufacturing and customization services for global tier-1 solar contractors and distributors:

Customization (OEM/ODM): Custom current ratings (e.g., specific 32A/35A steps), laser-printed private labels, custom terminal tags, and dual-voltage variants.
Quality Control (QC): 100% cold resistance testing, X-ray internal element alignment check, and automated vision inspection before packaging.
MOQ & Lead Time: Standard models (20A, 30A, 32A) ship within 7-10 business days. Custom batches require 15-20 days. Minimum Order Quantity (MOQ) starts at 500 PCS. 

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. 

Industrial Packaging: 10 PCS per inner box, 500 PCS per master export carton. Carton dimensions: 45 x 32 x 28 cm. Gross Weight: Approximately 18.5 kg.
Palletization: ISPM-15 compliant heat-treated wooden or plastic pallets with heavy-duty stretch wrapping for sea/air transit.
Shipping Options: FOB, CIF, DDP via DHL/FedEx/UPS for samples, and ocean freight/rail freight for bulk container orders. Complete documentation provided (Commercial Invoice, Packing List, Certificate of Origin, Form E).