Zhejiang Hongman Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of nh00 nh1 nh2 nh3 nh4 fuse holder in China. We are committed to providing high quality customized products made in China with competitive price. Welcome to wholesale bulk cheap nh00 nh1 nh2 nh3 nh4 fuse holder from our factory.
Product Introduction
This full series NH knife blade fuse holder strictly complies with EN/IEC60269-2 international electrical safety standards, perfectly matched with NH000 to NH4 all size gG HRC fuse links, widely applied for low-voltage industrial distribution cabinets, photovoltaic energy storage boxes, heavy-duty motor control panels and mining power distribution equipment. This NH Fuse Holder CE Fuse Holder adopts high-temperature resistant integral ceramic insulating base, thick galvanized silver-plated copper conductive clips and reinforced locking bolt structure. The elastic copper clamp fits tightly with fuse knife blades, effectively lowering contact resistance and long-term operation temperature rise; the embedded installation hole supports both fixed panel mounting and standard DIN rail snap-on assembly, flexible to adapt various cabinet layout demands.
Product Parameter
|
Item |
Specification |
|
Model |
Full Series NH Ceramic Fuse Holder (NH000/NH00/NH0/NH1/NH2/NH3/NH4) |
|
Matching Fuse |
Corresponding size NH knife blade HRC fuse link (gG type) |
|
Rated Voltage |
AC 500V / AC 690V, DC440V |
|
Rated Current |
NH000:100A; NH00:160A; NH0:160A; NH1:250A; NH2:400A; NH3:630A; NH4:1250A |
|
Base Material |
High-temperature flame retardant dense integral ceramic insulator |
|
Conductive Part Material |
Thick elastic copper with silver plating, anti-oxidation & low contact resistance |
|
Installation Method |
Panel fixed mounting + Standard 35mm DIN rail snap-on mounting |
|
Clamping Structure |
Elastic spring copper clip + locking bolt double fastening, anti-loose during long-term operation |
|
Executive Standard |
EN/IEC60269-2, DIN43620 |
|
Certification |
CE safety certification, RoHS environmental compliance |
|
Supporting Accessory |
Special NH series fuse puller (separately supplied) |
|
Application |
Industrial low voltage distribution cabinet, PV energy storage cabinet, heavy motor control box, mining & metallurgy power distribution equipment |
Product Qualification
1.Full series unified dimensional calibration interchange system
Every size of NH fuse holder undergoes one-to-one matching test with corresponding NH fuse links, strictly following international DIN industry unified size standards. The inner clamping spacing, installation hole pitch and DIN rail buckle size are consistent with mainstream European imported fuse holders. Customers can mix domestic and imported NH fuse links of the same size without replacing the base, reducing spare parts inventory cost.
2.High temperature resistant ceramic base passed cycle thermal aging test
The insulating ceramic base adopts 1300℃ high-density integrated sintering craft, passing 500 cycles of -30℃~+80℃ temperature alternating shock test without cracking, deformation or insulation attenuation. It can stably isolate electric arc generated by short-circuit fault and avoid cabinet internal short-circuit spreading risks.
3.Silver-plated elastic copper clip with lasting clamping performance
The conductive copper clip adopts integral stamping one-piece forming + thick silver plating anti-corrosion process. After thousands of fuse plug-in simulation tests, the elastic clamping force will not weaken, effectively preventing poor contact and overheating faults caused by long-term thermal expansion and cold contraction of copper terminals.
4. Complete CE certification file for global cross-border engineering clearance
Each batch of NH fuse holders is attached with official CE test report and RoHS hazardous substance detection document, with unique traceable certification serial numbers. The complete document set can be directly used for EU project tender review and overseas customs clearance, eliminating certification incomplete risks for foreign trade customers.
5.Dual universal installation structure adapts multiple cabinet layouts
Integrated reserved panel fixing holes and built-in 35mm standard DIN rail buckle, customers can freely choose fixed mounting or rail quick assembly according to cabinet internal design, no need to purchase two types of bases separately, simplifying engineering cabinet design and assembly process.
Production Process & Quality Control System
Ceramic Shell Forming The ceramic body is formed through high-temperature sintering to deliver reliable insulation and explosion-proof performance.
Copper Contact Machining Integrally stamped thickened solid copper blades are electroplated with copper-tin alloy for anti-oxidation, effectively reducing contact resistance.
Fuse Element Assembly Precision fuse strips are fitted with high-purity quartz sand (99% silicon content) to achieve rapid arc extinction.
Finished Product Testing Every single unit undergoes individual testing for breaking capacity, temperature rise and overload fusing performance.
Aging Sampling Inspection Long-term operation under rated current is simulated to eliminate potential overheating risks.
Full-process traceable quality control ensures consistent performance of every fuse link.
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 NH000 fuse Knife Blade Fuse Link be applied to household small DC energy storage power supplies? Can different size NH fuse links be installed on one NH Fuse Holder CE Fuse Holder?
A1: No, each size holder is only matched with the corresponding specification NH fuse link, the inner clamping width and limiting structure are exclusive, cross-size installation cannot be realized.
Q2: Is the silver-plated copper clip resistant to salt fog in coastal photovoltaic power stations?
A2: Silver plating plus thick copper substrate can pass 500-hour neutral salt fog test. For long-term coastal high salt mist environment, regular surface dust cleaning every half year is recommended to extend service life.
Q3: Can this NH fuse holder be directly used in fully sealed outdoor PV distribution boxes?
A3: It can be installed inside IP54 and above fully sealed waterproof cabinets, cannot be directly exposed to rain and outdoor dust, to avoid copper clip oxidation and ceramic damp leakage.
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