Zhejiang Hongman Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of nh3 fuse link in China. We are committed to providing high quality customized products made in China with competitive price. Welcome to wholesale bulk cheap nh3 fuse link from our factory.
Product Introduction
|
Item |
Specification |
|
Model |
NH3 Single Front Visible Indicator Ceramic HRC Knife Blade Fuse Link |
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Utilization Category |
gG (General dual protection for overload & short circuit of ultra-heavy industrial cables and large main distribution switchgear) |
|
Rated Voltage |
AC 500V / AC 690V, DC440V |
|
Breaking Capacity |
AC500V: 120kA; AC690V: 50kA |
|
Available Current Range |
200A ~ 630A (complete ultra-high current specs:315A,355A,400A,500A,630A) |
|
Housing Material |
High temperature flame retardant integrated extra-thick square ceramic insulated body |
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Arc Extinguishing Medium |
High purity quartz sand (silicon content ≥99%) |
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Contact Material |
Super thick reinforced tin-plated solid copper knife blade, anti-oxidation & stable low temperature rise under long-term ultra-high current load |
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Indicator Feature |
Single front pop-up visual blown indicator, obvious red mark exposed once internal melt fuses |
|
Executive Standard |
EN/IEC60269-2, DIN43620, GB13539.1 |
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Certifications |
CE, CCC, TUV, ISO9001, RoHS environmental certification |
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Matching Base |
Special dedicated NH3 ultra-heavy duty knife blade fuse base |
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Application |
Large factory central main low voltage switchgear, centralized ground energy storage stations, heavy mining machinery power distribution, high-power transformers & large industrial frequency converters |
Product Qualification
Independent third-party electrical laboratory certified unified DIN interchange dimensional performance
All NH3 fuse links pass professional third-party electrical laboratory dimensional matching verification, strictly following international unified DIN large ultra-high current size industrial standards. The overall outline size, super-thick copper knife spacing and cabinet mounting hole positions are completely consistent with mainstream European imported NH3 fuse links. Customers can directly replace old imported ultra-high current fuses without modifying main cabinet busbar layout, mounting hole positions and internal heavy wiring routes, greatly saving heavy industrial project reconstruction construction cycle and labor cost input.
Engineered for mainstream industrial electrical environments, the NH3 Low Voltage Fuse Link is built to withstand extreme current surges and long-term full-load operation in complex power distribution scenarios. Professionally optimized for industrial power facilities, the NH3 Power Distribution Fuse Link provides reliable overload cutoff and rapid short-circuit isolation, effectively protecting large transformers, heavy machinery and high-power electrical equipment. Supporting dual industrial voltage standards, the NH3 fuse link 500V 690V AC offers wide compatibility for global low-voltage industrial projects. With standardized IEC and DIN compliant design, the NH3 Low Voltage Fuse Link maintains excellent thermal stability and anti-aging performance, while the high-reliability structure of the NH3 Power Distribution Fuse Link minimizes equipment downtime and maintenance costs for commercial and industrial power distribution systems.
Product Qualification
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: What is the difference between gG and gM fuse characteristics, is this NH3 fuse g type?
A1: This NH3 product is standard gG general-purpose fuse. gG fuses can protect both cable overload and short-circuit faults; gM fuses only serve motor short-circuit protection without overload response, so gG is more suitable for factory main power distribution and energy storage main loops.
Q2: Can this NH3 fuse be used in outdoor rain-proof power distribution box?
A2: It cannot be directly exposed to rain. It must be installed inside fully sealed IP54 and above distribution cabinets with waterproof housing to prevent ceramic shell damp and copper terminal oxidation caused by rainwater infiltration.
Q3: What is the shelf life of unused NH3 fuses under dry warehouse storage?
A3: If stored in dry, ventilated indoor warehouse without direct sunlight, the storage shelf life can reach 5 years without performance attenuation of internal melt and indicator parts.
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