spool insulators

spool insulator for power distribution line

Changsha Rich (AsiaPower) supplies

durable porcelain spool insulators (like Type 53-1)

for low-voltage distribution lines, guy wires, and service drops. Reliable support and insulation.

Spool insulators are a fundamental component in low-voltage distribution networks and telecommunications lines. Characterized by their distinctive drum-like shape with a central hole for mounting, they provide essential insulation and mechanical support for conductors. Asia Power’s porcelain spool insulators, including the widely used Type 53-1, are engineered for durability and reliable performance in supporting, dead-ending, or guying applications.

Features of Asia Power Spool Insulators:

  • Durable Porcelain Construction: Offers high mechanical strength and excellent insulation.
  • Cost-Effective Solution: Ideal for widespread use in LV distribution and service connections.
  • Easy Installation: Central hole allows for easy mounting on bolts or pins.
  • Grooved Design: Securely holds wires in place, preventing slippage.
  • Weather-Resistant Glaze: Provides long-term performance in outdoor environments.
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Common Applications of Spool Insulators:

  • Supporting secondary distribution lines
  • Insulating guy wires on utility poles
  • Service drop connections from pole to building
  • Low-voltage overhead lines in rural areas
  • Railway signaling circuits

Production and Testing

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spool insulator

These insulators have a tensile strength of approximately 25kN and feature standardized right-hand and left-hand threads (e.g., 3/8"-24 UNF) on each end.
They are commonly used for insulating guy wires, in low-voltage lines, and in applications requiring insulation under tension with a compact form factor.
Yes, the entire porcelain body is covered with a smooth, uniform glaze to provide a consistent and high-integrity insulating surface.
The Minimum Order Quantity is typically one pallet. We are happy to provide a few sample units for your evaluation and testing.
The robust ceramic body and the deep, well-formed threads are designed to withstand constant tension and vibrations without cracking or stripping.
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