Zhejiang Hongman Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of nh4 fuse link in China. We are committed to providing high quality customized products made in China with competitive price. Welcome to wholesale bulk cheap nh4 fuse link from our factory.
Product Introduction
The NH4 Fuse Link boasts simple modular installation and exceptional ultra-heavy load bearing performance, making it ideal for large industrial factories, power station integrators and heavy machinery manufacturers looking to upgrade high-current circuit safety and system operational reliability. In addition, it features a variety of advanced and state-of-the-art features, including super-large-capacity arc extinguishing structure, high-purity low-resistance copper conductor and industrial-grade full-range overcurrent protection technology, which help ensure unparalleled fault breaking capability and long-term stable operation for high-power power distribution systems.
Product Parameter
|
Item |
Specification |
|
Model |
NH4 Single Front Visible Indicator Ceramic HRC Knife Blade Fuse Link |
|
Utilization Category |
gG (General dual protection for overload & short circuit of super heavy industrial main cables and large heavy-duty main switchgear) |
|
Rated Voltage |
AC 400V / AC 500V / AC 690V, DC440V |
|
Breaking Capacity |
AC400/500V:120kA; AC690V:50kA; DC440V:100kA |
|
Available Current Range |
500A ~ 1000A (complete super large current specs:800A,1000A) |
|
Housing Material |
High temperature flame retardant integrated extra thick square ceramic insulated body |
|
Arc Extinguishing Medium |
High purity quartz sand (silicon content ≥99%) |
|
Contact Material |
Ultra wide perforated reinforced tin-plated solid copper knife blade, anti-oxidation & low temperature rise under long-term ultra-large current load |
|
Indicator Feature |
Single front pop-up visual blown indicator, obvious red mark exposed after internal melt fusing |
|
Executive Standard |
EN/IEC60269-2, DIN43620, GB13539.1 |
|
Certifications |
CE, CCC, TUV, ISO9001, RoHS environmental certification |
|
Matching Base |
Special dedicated NH4 ultra heavy-duty knife blade fuse base |
|
Application |
Metallurgical heavy industrial main low voltage switchgear, large centralized ground energy storage stations, heavy mining smelting equipment, ultra high-power transformers & large industrial frequency converters |
Product Qualification
Full closed-loop full lifecycle batch traceability quality control system
Every production batch of NH4 ultra-large current fuse links is assigned an exclusive independent trace code, which links raw super thick ceramic blank procurement records, ultra-wide copper knife processing archives, internal extra wide melt assembly data and finished full-performance test reports. All production data is permanently archived and retrievable. Once customers encounter abnormal protection failure feedback in metallurgical factory or energy storage station operation, our professional QC team can rapidly trace the corresponding production workshop and adjust core process parameters to avoid large-scale whole plant safety hazards for heavy industrial projects.
Designed for extreme heavy-current industrial scenarios, the NH4 1000A Fuse Link is engineered to sustain continuous ultra-high current operation without overheating or performance attenuation. This premium NH4 Ceramic fuse link adopts thickened high-temperature sintered ceramic housing, featuring explosion-proof, anti-aging and insulation-enhanced properties to adapt to harsh industrial operating environments. As a core high-power protective component, the NH4 1000A Fuse Link delivers millisecond-level rapid short-circuit cutoff and accurate overload protection, effectively safeguarding large transformers, heavy industrial equipment and high-capacity power distribution systems. Rigorously compliant with IEC and DIN international standards, the NH4 Ceramic fuse link provides ultra-reliable safety barriers for large-scale industrial power projects, minimizing equipment failure risks and system downtime.
Production Process & Quality Control System
Packaging, Shipping & After-sales Service
Inner Packaging: Each fuse is individually packed in an anti-collision plastic case to prevent deformation of copper blade contacts during transportation.
Outer Packaging: Standard export cartons wrapped with moisture-proof films.
A full set of customs clearance documents is available, including CE certificates, test reports, commercial invoices and packing lists.
FAQ
Q1: Can NH4 Fuse NH4 Ceramic fuse link be applied to both AC metallurgical main distribution circuits and DC ultra-large capacity energy storage battery main loops?
A1: Yes, this NH4 series supports AC400/500/690V heavy metallurgy power distribution main circuits and DC440V ultra-large capacity energy storage main loops simultaneously. Its ultra-high breaking capacity can resist massive instantaneous surge current generated during large energy storage inverter startup, avoid false fusing, and provide reliable ultra-large current short-circuit protection for ultra-large energy storage battery clusters.
Q2: What is the maximum allowable continuous operating ambient temperature of NH4 1250A ultra-large current heavy fuse link?
A2: The standard stable operating temperature range is -25℃ ~ +70℃. If installed in fully sealed large main inverter cabinets with poor internal heat dissipation, we recommend reducing the actual operating load current by 10% to avoid premature aging of internal extra wide variable-section melt strips under long-term high-temperature closed environment.
Q3: Can customers only purchase NH4 fuse links without supporting matching NH4 heavy-duty fuse bases?
A3: Separate split sales of fuse links are fully supported. If customers already hold stock of standard NH4 heavy-duty fuse bases for metallurgy or energy storage projects, they can independently order fuse links only to cut overall spare parts procurement costs of large project construction.
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