Composite Polymer Horn Gap Fuse (HG Fuse)

Composite Polymer Horn Gap Fuse (HG Fuse)

Our Horn Gap type fuse cut outs are use in distribution system for protection of H.T lines and transformer centers Tap lines from short circuit, over-load and breaking / Making load current


– Light weight, small size, easy for transportation and installation

– High mechanical strength

– Super performance for anti-pollution

– Low maintenance cost


Our HG Fuse are manufactured and tested as per IS 9385 and IEC 282-2 respectively.


The channel/solid core Horn Gap fuse set has single pole construction and outdoor type. Each pole has polymeric insulators, current carrying parts made of a highly conductive copper alloys and the contact portion is silver plated for corrosion resistance. The fuse tube made of fiber glass and epoxy resin coated with ultravoilet inhibitor on the outer surface and having arc quenching bone fiber liner inside.

In-House Testing Facility:

We have full in house testing facility for Polymeric Drop Out Switch. We are doing all the below test on our Polymeric Drop Out Switch as per relevant test standards during and after manufacturing on daily basis. 

  • Power Frequency Voltage Dry Test
  • Measurement of resistance of main circuit
  • Test to prove satisfactory operation
  • Dimensional Check
  • Galvanization test
  • Temperature Rise test

Type Test:

Our Polymeric Horn Gap Switch have been type tested by CPRI Bangalore as per IS 9921 (Part 4) : 1985 and IEC 62271 -102 respectively for the following tests.

  • High Voltage Dry and Wet Power Frequency Withstand Test
  • Lightning Impulse voltage withstand test
  • Short time and peak withstand current test set
  • Temperature rise test
  • contact resistance test
  • Mechanical Endurance test

Product Specification Table:   

S No.Product RatingProduct typeCurrent Rating
111 kVSolid Core
100/200 Amp
211 kVChannel Type100/200 Amp
322 kVSolid Core100/200 Amp
422 kVChannel Type100/200/ Amp
533 kVSolid Core100/200/400 Amp
633 kVChannel Type100/200/400 Amp

Light weight, Ease of Installation and less transportation charge. 

Advantages of Composite Insulators over Conventional Porcelain Insulators: 

  • Resistance to breakage and vandalism.
  • Unique self-cleaning property, reduced maintenance cost.
  • Hydrophobicity and recovery of hydrophobicity make it suitable for polluted environment and salty atmosphere.
  • Low leakage current in long term ageing.
  • Resistance to puncher due to cutting age technology.
  • Superior UV & weather resistance properties.
  • Sustained hydrophobicity, resulting in lower leakage currents, reduced dry band arcing, and less risk of flashover,
  • Specially formulated high tracking resistance silicone rubber used for sheathing.
  • A higher mechanical strength to weight ratio which enables the construction of longer spans of towers.