Looking for Composite Polymer Drop Out Fuse (DOF) units in India?
At Venkateswara Suppliers Pvt Ltd (VSPL), we manufacture high-performance Polymer Drop Out Fuses designed for 11 KV, 22 KV, and 33 KV distribution networks. Built using FRP cores, silicone polymer insulation, and galvanized metal fittings, our fuses offer reliable circuit protection, lightweight construction, and long-term outdoor durability for safe power distribution systems.
What Is a Composite Polymer Drop Out Fuse?
A Drop Out Fuse (DOF) is a protective device used in overhead power distribution systems to isolate faulty sections during overcurrent or short-circuit conditions.
VSPL’s Composite Polymer Drop Out Fuses combine the mechanical strength of fiberglass cores with the insulation reliability of silicone rubber, providing superior safety and weather resistance compared to traditional porcelain fuses.
Key Benefits:
Technical Specifications – Composite Polymer Drop Out Fuse
| Parameter | 11 KV | 22 KV | 33 KV |
|---|---|---|---|
| Nominal System Voltage (KV) | 11 | 22 | 33 |
| Rated System Voltage (KV) | 12 | 24 | 36 |
| Minimum Failing Load (KN) | 5 | 5 & 10 | 10 |
| Creepage Distance (MM) | 320 | 600 | 900 & 1116 |
| Dry Power Frequency Withstand Voltage (KV) | 65 | 85 | 110 |
| Wet Power Frequency Withstand Voltage (KV) | 45 | 55 | 95 |
| No Of Sheds | 3 & 3 | 5 & 5 | 10 & 10 |
Why Choose VSPL
With over 25 years of expertise in electrical component manufacturing, VSPL ensures that every Drop Out Fuse delivers dependable protection and performance. All VSPL fuses undergo routine high-voltage and mechanical testing in compliance with IEC 60099-4 standards.
Why Power Utilities Choose VSPL:
- Advanced FRP core and silicone rubber technology.
- Available in 11 KV, 22 KV, and 33 KV ratings.
- Long service life in humid and polluted environments.
- In-house testing up to 200 KV.
- Robust packing and quick delivery across India.
FAQs
A DOF is used in overhead power lines to protect transformers and feeders by disconnecting faulty sections automatically during overcurrent conditions.
They are available in 11 KV, 22 KV, and 33 KV models for distribution line applications.
Polymer fuses are lighter, corrosion-resistant, and perform reliably in polluted or coastal environments due to their hydrophobic silicone insulation.
Yes. All VSPL Composite Polymer Drop Out Fuses comply with IEC 60099-4 for design and testing.
Yes. We provide tailor-made fuse units with custom creepage distances, mechanical strengths, and mounting configurations as per customer requirements.
Get a Quote
Contact us today to learn more about VSPL's Composite Polymer Drop Out Fuses, including product details, pricing, and custom solutions.
Business Hours
Mon - Sat: 9:00 AM - 6:00 PM