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Knife Blade Protection of Conductors Fuse
Knife Blade Protection of Conductors Fuse Knife Blade Protection of Conductors Fuse
Knife Blade Protection of Conductors Fuse Knife Blade Protection of Conductors Fuse
Knife Blade Protection of Conductors Fuse Knife Blade Protection of Conductors Fuse

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Conductive Knife Blade Protection Fuse

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NT00 fuses, also referred to as Knife Blade Fuses. Initially developed as versatile fuses for safeguarding conductors, NT00 fuses are designed as non-resettable fuses. This implies that once they have operated, they necessitate replacement with a new fuse possessing identical specifications.
  • NT00

  • Esinele

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Understanding NT00 Knife Blade Fuse


The Esinele NT00 Knife Blade Protection Fuse, also known as a conductor protection fuse, is a non-resettable electrical safety component designed to safeguard circuits and conductors from overload and short-circuit damages. It features a rectangular ceramic housing structure with metal blade-style terminals at both ends, ensuring stable electrical connections. The internal fuse element is securely linked to the cover plate and blade terminals inside the housing. Most models are equipped with a trip indicator, which provides clear visual signals once the fuse element blows. Each cover plate is fitted with a metal extraction lug, allowing quick and convenient removal from the fuse holder with a recommended NH fuse puller tool. As a one-time fuse, it must be replaced with a product of identical specifications after operation to restore circuit protection functions.


Core Functions of Conductor Protection Fuses

The primary function of the NT00 Knife Blade Fuse is conductor protection. It breaks the circuit rapidly when the current exceeds the rated value, preventing overheating of conductors and avoiding potential fire hazards or equipment damage. Compliant with the IEC 60269 international safety standard, this fuse ensures reliable performance in various low-voltage electrical systems.


NT00 construction


Technical Specifications

Parameter

Details

Brand

Esinele

Model

NT00

Current Rating

100A

Voltage Rating

500V

Breaking Capacity

120kA

Operation Speed

gG

Safety Standard

IEC 60269

Housing Material

Ceramic

Product Type

Non-resettable Knife Blade Fuse

Place of Origin

Zhejiang, China


Application Scenarios

Industrial Distribution Systems

The NT00 Knife Blade Fuse is widely used in industrial low-voltage distribution cabinets. It protects the internal conductors of the cabinets from overload currents, ensuring the stable operation of the entire distribution system. Its high breaking capacity of 120kA makes it suitable for harsh industrial environments with frequent current fluctuations.


Motor Control Circuits

In motor control systems, this fuse provides effective protection for the connecting conductors of motors. When the motor starts abnormally or experiences a short circuit, the fuse blows instantly to cut off the power supply, preventing damage to the motor and related electrical components.


Building Electrical Equipment

It is also applicable to the electrical systems of commercial buildings and residential complexes. It can be installed in power distribution boxes to protect the conductors of lighting, air conditioning, and other electrical equipment, improving the overall safety of the building's power supply.


Product Advantages


High Breaking Capacity

With a breaking capacity of 500V-120kA, the fuse can quickly interrupt high fault currents, effectively protecting circuits and equipment from severe impacts.

User-friendly Design

The built-in trip indicator allows maintenance personnel to quickly identify blown fuses. The metal extraction lug matches the NH fuse puller tool, enabling fast replacement and reducing maintenance time.

Reliable Quality and Compliance

Adopting a high-quality ceramic housing, the fuse has good insulation and heat resistance. It complies with the IEC 60269 standard, meeting the safety requirements of global markets and ensuring safe use in various scenarios.


Installation & Usage Guidelines

Installation Steps

Select a fuse holder that matches the NT00 model to ensure the fuse is installed firmly without loosening. Align the metal blade terminals of the fuse with the slots of the holder and insert it in place until there is no obvious shaking. Confirm that the circuit voltage and current match the fuse’s rated parameters before powering on.


Usage Precautions

Do not reuse a blown fuse; replace it with an Esinele NT00 fuse of the same specifications to avoid circuit protection failure. Use a dedicated NH fuse puller tool during replacement; do not disassemble it manually to prevent electric shock or component damage. Regularly check the status of the trip indicator. If the fuse is found to be blown, cut off the power supply in time before replacement.


FAQ


How to judge whether the NT00 Knife Blade Fuse is blown?

Observe the trip indicator on the fuse cover plate. If the indicator changes color or pops up, it means the fuse element has blown and needs to be replaced.


Can the fuse be used in a circuit exceeding 500V?

No. The fuse’s rated voltage is 500V. Using it in a higher-voltage circuit will cause insulation breakdown and potential safety hazards.


What is the difference between the gG operation speed and other types?

The gG speed indicates that the fuse is suitable for general-purpose protection. It can withstand short-term overload currents during motor startup and blow quickly when a short circuit occurs, balancing protection and equipment operation needs.


CTA


Are you looking for a reliable conductor protection fuse for your electrical system? The Esinele NT00 Knife Blade Fuse with excellent performance and user-friendly design is your ideal choice! Click the Inquire button to learn about the latest quotation and delivery terms, or directly add the product to the Basket to complete your purchase. Protect your circuit safety and choose Esinele high-quality fuses!



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