HV Expulsion fuses-1
HV Expulsion fuses-1
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11-38kV Expulsion Fuse Cutout for electrical distribution

In electrical distribution, a fuse cutout or cut-out fuse (often referred to as a cutout) is a combination of a fuse and a switch, used in primary overhead feeder lines and taps to protect distribution transformers from current surges and overloads. An overcurrent caused by a fault in the transformer or customer circuit will cause the fuse to melt and the switch mechanism to visibly open, disconnecting the transformer from the line. The device can also be opened manually by utility linemen standing on the ground and using a long insulating stick called a "hot stick".
if need any qualification or test report,please email to info@changangroup.com.cn
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11-38kV Expulsion Fuse Cutout for electrical distribution

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Product features

High performance of weather aging resistance

  1. For porcelain insulator, the porcelain body connects with hardware fitting by cement pouring, we use the (Prorok)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.

  2. 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 molded by one piece injection molding. It has good sealing performance and good performance of tracking and erosion resistance.

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

Design feature of single vent

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

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

Excellent conductivity

  1. All copper casting parts adopt bronze/brass, it has excellent mechanical strength and excellent conductivity.

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

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

Reliable load breaking capacity 

For Load break 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 areas, high altitude areas, coastal areas, etc.

Relevant international executive standards
We manufacture all fuse cutouts and test according to the latest international standard IEC 60282-2:2008 & IEEE Std C37.41-2008 & IEEE Std C37.42-2009.

Product categories

Model Type of material for insulator Product feature
Standard Cutout Porcelain Provide protection to the line of distribution system and the various apparatus on those line such as transformers and capacitor banks. lt can also be used as a sectionalizing device. Using a portable load break tool, it can function much like an overhead line disconnect switch.
Maximum design voltage from 10Kv-38kv; Maximum Rating current 100-200A.
Load break Cutout Porcelain This Load break fuse cutout is available for application on 10kv to 38kv distribution system. The addition of the arc chute provides load break capability for fuse cutouts. Also expands the flexibility of the protective devices. The load break fuse cutout provides short circuit protection to overhead lines with the added feature of a load breaking function. Maximum rating current 100-200A.
Fuse Cutout-Arrester Combinations Porcelain Fuse Cutout-Arrester Combination units install easily and faster, more economically, and take up less space in storage, transit and service. Each combined unit takes up a minimum of space on the crossarm and has a favorable weight distribution for minimal off-center loading. Fuse cutout fitted with surge arrester of Chanan brand.
Disconnect Blade Cutout Porcelain Disconnect Blade Cutout adopts design feature of fuse cutout, using cooper disconnect blade to replace fuse tube, be used as a sectionalizing device (disconnect switch) on 10kV to 38kV distribution system installed easily and faster, more economically, takes up a minimum of space on the crossarm. Rating current 300A-400A.

Technical Data

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

  1. Rated voltage and rated current.

  2. Minimum creepage distance.

  3. The material of insulator.

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

  5. Please indicate the type of mounting bracket.

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