Our 53-1, 53-2, and 53-3 porcelain spool insulators are designed for low voltage overhead distribution lines, providing excellent mechanical strength, electrical performance, and long-term weather resistance.
Made of high-grade electrical porcelain with glazed surfaces, these insulators are suitable for both indoor and outdoor applications under various climatic conditions.
Each type (53-1 / 53-2 / 53-3) conforms to ANSI C29.3 or IEC 60383 standards, ensuring reliable insulation and safety for your power distribution networks.
Key Features
⚡ High Dielectric Strength: Stable electrical insulation up to 1kV–11kV low voltage systems.
💪 Excellent Mechanical Strength: Supports tension and line load for small span distribution lines.
🌧️ Weather & Pollution Resistant: Glazed surface prevents moisture penetration and surface tracking.
🧱 Durable Porcelain Body: Made from high-alumina porcelain, fired at high temperature for long service life.
🛠️ Easy Installation: Designed for tie wires, stay wires, or bracket mount applications.
Technical Specifications
| Model | Standard | Nominal Voltage (kV) | Mechanical Strength (kN) | Creepage Distance (mm) | Diameter (mm) | Height (mm) | Color |
|---|---|---|---|---|---|---|---|
| 53-1 | ANSI C29.3 / IEC 60383 | 1–3 | 2.5 | 35 | 52 | 57 | Brown / Light Gray |
| 53-2 | ANSI C29.3 / IEC 60383 | 1–3 | 4.5 | 38 | 60 | 64 | Brown / Light Gray |
| 53-3 | ANSI C29.3 / IEC 60383 | 1–3 | 5.5 | 45 | 65 | 70 | Brown / Light Gray |
Customized colors, mechanical ratings, and packaging are available upon request.
53-1 porcelain insulator
Applications
Low voltage overhead distribution lines
Pole line hardware and secondary networks
Rural electrification projects
Service drops, cross arms, and bracket installations
Quality & Standards
Manufactured under ISO 9001:2015 quality system
Tested according to IEC 60383 and ANSI C29.3
Routine and sample tests include:
Mechanical load test
Power frequency withstand test
Thermal-mechanical performance
Glaze surface inspection
Packaging & Shipping
Packed in strong export-grade cartons with foam and palletized wooden cases.
Each carton labeled with model, quantity, and batch number for traceability.
Delivery time: 15–25 days after deposit.
Shipping port: Guangzhou / Shenzhen / Foshan (Flexible for sea or air).
Why Choose Us
✅ Over 10 years of experience in power line porcelain products
✅ Strict quality control and 100% inspection before shipment
✅ Fast delivery and OEM/ODM available
✅ Samples ready within 3–5 daysFAQ
Q1: What’s the difference between 53-1, 53-2, and 53-3 models?
A1: They differ in size and mechanical strength. 53-1 is suitable for light-duty lines; 53-3 is used for higher mechanical loads.Q2: Can I get samples for testing?
A2: Yes, free samples are available. Freight can be collected or prepaid.Q3: Do you provide customized printing or logo?
A3: Yes, we offer OEM marking, customized glaze color, and private labeling.Q4: What certifications do you have?
A4: Our insulators comply with IEC 60383 and ANSI C29.3 standards; factory ISO 9001 certified.
