Zhejiang Hongman Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of nh2 dual blown indicator 400a hrc blade fuse in China. We are committed to providing high quality customized products made in China with competitive price. Welcome to wholesale bulk cheap nh2 dual blown indicator 400a hrc blade fuse from our factory.
Product Introduction
The NH2 Dual Blown Indicator 400A HRC Blade Fuse is simple to install and highly reliable in heavy-current operation, making it ideal for industrial distributors and energy storage system integrators looking to upgrade low-voltage power protection performance. In addition, it features a variety of advanced and state-of-the-art configurations, including dual-end synchronous fault indication, high-density arc-extinguishing quartz sand and thickened tin-plated copper blade terminals, which help ensure unparalleled short-circuit breaking stability and long-duration overload resistance for high-power distribution systems.
Product Parameter
|
Item |
Specification |
|
Model |
NH2 Double Signal Indicator Ceramic HRC Knife Blade Fuse Link |
|
Utilization Category |
gG (General dual protection for overload & short circuit of cables and switchgear) |
|
Rated Voltage |
AC 500V / AC 690V |
|
Breaking Capacity |
AC500V: 120kA; AC690V: 50kA |
|
Available Current Range |
100A ~ 400A (complete specifications: 100A,160A,200A,250A,315A,355A,400A) |
|
Housing Material |
High temperature flame retardant integrated square ceramic insulated body |
|
Arc Extinguishing Medium |
High purity quartz sand (silicon content ≥99%) |
|
Contact Material |
Thickened tin-plated pure copper, anti-oxidation & low temperature rise under high current |
|
Indicator Feature |
Dual-end pop-up double signal visual blown indicator, red mark exposed after fusing |
|
Executive Standard |
IEC/HD 60269-2, DIN43620 |
|
Certifications |
CE, CCC, TUV, ISO9001, RoHS environmental certification |
|
Matching Base |
Special NH2 knife blade fuse base |
|
Application |
Large low voltage switchgear, heavy industrial control boxes, PV energy storage stations, UPS, high-power motor & inverter protection |
Product Advantage
This series of AC500/690V NH2 HRC fuse links adopt unified standardized outer dimensions, fully compatible with mainstream domestic and imported NH2 knife blade fuse bases. Customers can directly replace old imported HRC fuse links of the same specification without modifying cabinet internal wiring or installation space, effectively reducing spare parts procurement cost and equipment renovation expense.
Engineered for heavy-load industrial scenarios, this Double Signal Fuse Link NH2 adopts a dual-indicator visual alarm structure, enabling fast, blind-spot-free fault identification to greatly improve on-site maintenance efficiency. As a high-capacity 400A HRC Fuse, it delivers robust full-range gG protection and excellent current bearing capacity, perfectly adapting to large inverters, heavy-duty motors and centralized energy storage equipment. Built with explosion-proof high-temperature ceramic housing, the Double Signal Fuse Link NH2 maintains stable performance under continuous high-current operation. With standardized DIN and IEC compliant design, this premium 400A HRC Fuse effectively isolates severe circuit faults, ensuring maximum operational safety and reliability for high-power industrial power distribution projects.
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
FAQ
Q1: What current specifications are covered by NH2 fuse link, and is the 400A model in regular stock?
A1: The current range of NH2 fuse link extends from 100A to 400A, including mainstream ratings of 100A,160A, 250A, 315A, 355A and 400A. All standard specifications including 400A dual-indicator versions are kept in permanent warehouse stock for bulk orders.
Q2: What is the recommended load derating ratio if NH2 fuse link is installed in fully sealed heat-insulated inverter cabinets?
A2: The standard stable operating temperature range is -25℃ ~ +70℃. For fully sealed cabinets with poor heat dissipation, we advise derating the actual operating current by 10% to slow down the aging of internal melt strips.
Q3: What's the advantage of bilateral double pop-up indicators compared with single-indicator NH fuses?
A3: The dual-end red signal markers can be observed from two different directions. Even if one side is blocked by dense internal wiring, maintenance staff can still clearly identify blown fuses, eliminating visual blind spots in compact large inverter cabinets.
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