Expulsion fuse cutout

Product features：

High performance of weather aging resistance：

• For porelain insulator, the porcelain body connects with hardware fitting by cement pouring, we use the (por-rok)ANCHORING cement manufactured by CGM INC from USA. This kind of cement has rapid solidification, high mechanical strength, low expansion coefficient and superior weather resistance.

• For polymer insulator, the hardware fitting crimped onto fiberglass rod, material of housing and sheds manufacture of high-temperature Vulcanized Silicone Rubber, and the insulator moulded by one piece injection molding. It has good sealing performance and good performance of tracking and erosion resistance.

• All ferrous parts processed by hot dip galvanized, its zinc coating more than 86u, it has good corrosion resistance.

  
  

Design feature of single vent：

• Our fuse cutout adopts the design feature of single vent, exhaust downwards and outwards when fuse cutout interrput. Prevent the intrusion of rainwater, avoid damage to the upper line by free gas, and this design can improve the interrput capacity.

• It adopts Arc-shortening copper rod to improve the interrput capacity when short circuit fault.

Excellent conductivity:

• All copper casting part adopts bronze/brass, it has excellent mechanical strength and excellent conductivity.

• All contact parts be silver-plated, it adopts convex design on the contact surface, this design can reduce the contact resistance and ensure excellent conductivity.

• The high-strength memory cooper alloy sheets can ensure contact with lower contact smoothly and without any affecting when fuse drop out.

  
  

Reliable load breaking capacity:

• For Loadbreak type fuse cutout, its arc chamber made of special reinforced nylon material. It has good mechanical strength, anti-aging and flame retardant, suitable for use the area like high ultraviolet area, high altitude area, coastal area, etc.

Relevant international executive standards:

• All fuse cutouts we manufacture and test according to the latest international standard IEC 60282-2:2008 & IEEE Std 037.41-2008 & IEEEStd 037.42-2009.

Product categories:

Technical parameter:

Warm tips:

When order.please indicate the detailed information as below listed:

• Rated voltage and rated current .

• Minimum creepage distance.

• The material of insulator.

• Please indicate whether arc-shortening rod should be fitted with fuse cutout.

• Please indicate the type of mounting bracket.

How does a expulsion fuse  work?

Normal Operating State:

• During normal operation, the expulsion fuse allows the normal operating current to pass through. The fusible element conducts current normally, behaving like a regular conductor, without hindering the operation of the power system.

Fault Operating State:

• When an overload or short-circuit fault occurs in the circuit, causing the current to exceed the rated current of the fuse, the fusible element heats up and melts, generating an arc. The high temperature of the arc causes the gas-producing material inside the fuse to decompose, generating a large amount of high-pressure gas. These gases are expelled at high speed, stretching, cooling, and ultimately extinguishing the arc, thereby interrupting the fault current and protecting the lines and connected electrical equipment.