22*58mm Ceramic Tube Fuse

The 22x58mm cylindrical ceramic tube fuse is engineered for high-capacity overcurrent and short-circuit protection in industrial electrical systems, power distribution switchgears, and renewable energy sectors (Photovoltaic and Battery Energy Storage Systems). Designed and manufactured in strict accordance with IEC 60269 and UL 248 standards, this series provides precise fault isolation and maximum safety under demanding electrical environments. 

B2B buyers and engineers evaluate components based on material science and verifiable tolerances. Our automated production line ensures the following physical benchmarks:

99.99% Pure Silver Elements: We utilize only 99.99% pure silver ribbon elements with precision-stamped notches. This guarantees an exceptionally low internal resistance, minimizing power dissipation (Watts) and preventing thermal drifting during continuous 24/7 operations.
C800 High-Density Alumina Ceramic Body: The outer tube is constructed from high-grade C800 alumina ceramic, providing a tensile strength exceeding 200 MPa and thermal shock resistance up to 300 degrees Celsius. This prevents tube bursting or shattering during high-energy short-circuit interruptions (120kA).
Controlled Quartz Sand Filling (99.5% SiO2): The arc-extinguishing medium consists of chemically washed, solidified, and granulated quartz sand with a grain size strictly controlled between 0.15mm and 0.35mm. It is compacted via high-frequency automated vibration to eliminate air pockets, ensuring instantaneous arc cooling.
T2 Copper End Caps (Nickel or Silver Plated): Terminal caps are stamped from high-conductivity T2 copper (greater than or equal to 99.9% Cu), finished with a 3 to 5 micron nickel or silver plating layer. This configuration keeps contact resistance under 0.3 milliohms, preventing localized temperature rise at the fuse holder contact points.
100% Automated Cold Resistance Testing: Every single fuse undergoes a digital kelvin-bridge resistance test prior to packaging. Fuses outside a +/-3% tolerance band are automatically rejected, ensuring absolute consistency in time-current (I-t) characteristics across mass production batches. 

We offer flexible contract manufacturing capabilities for global distributors, brand owners, and system integrators.

Electrical Profile Adjustments: Customization of fast-acting configurations, specialized time-delay characteristics, or tailored I2t pre-arcing values to match specific semiconductor or inverter protective coordination.
Private Labeling and Surface Marking: Permanent, high-contrast fiber laser marking on the ceramic body or metal caps. Custom contents include your brand logo, specific catalog numbers, batch barcodes, and international certification marks.
Structural Modifications: Supply of standard cylindrical caps, bolt-on tags (offset or centered tags for busbar mounting), or striker-pin indicators for micro-switch fault signaling integration.

MOQ Thresholds:
Standard specifications with custom laser marking: MOQ 2,000 pcs.
Fully customized electrical profiles or dimensions: MOQ 10,000 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. 

Production Capacity: 800,000 pieces per month across automated assembly lines.

Standard Lead Times:
In-stock items: 3 to 5 business days for packaging and dispatch.
Mass production / Custom OEM orders: 15 to 25 business days depending on raw material scheduling.

Industrial Packaging Architecture:
Inner Box: 10 pieces per sealed, moisture-proof inner box.
Master Carton: 500 pieces per heavy-duty double-corrugated export carton (Gross Weight: approx. 23.5 kg per carton).
Palletization: Fumigated ISPM-15 wooden pallets or heavy-duty plastic pallets wrapped in multi-layer stretch film with corner protectors for all sea and rail freight shipments.

Global Shipping Formats:
FOB / CIF / CFR: Dispatched via major international deep-water ports (Ningbo/Shanghai).
DDP / DDU: Available via contracted air freight and rail-link distribution networks directly to your fulfillment centers in Europe, North America, and Australia.
Express Air Courier: (DHL, FedEx, UPS) Recommended for urgent prototype evaluations and first-article testing.