The post insulator bracket mounts distribution post-type insulators directly to utility poles, supporting overhead line configurations without cross arms. Constructed from ductile iron (ASTM A-536), aluminum, or carbon steel with hot dip galvanized treatment, it provides secure insulator attachment in power distribution systems. Some models incorporate fiberglass elements with ultraviolet protective coating for enhanced environmental resistance.
The bracket offers resistance to moisture, corrosion, and chemicals, ensuring reliable performance in harsh conditions. Its design supports phase-over-phase arrangements and armless construction on wood, steel, concrete, or composite poles. The pole-shape back enhances fitment, accommodating insulators rated from 15 kilovolt (kV) to 34.5 kV for versatile deployment in overhead line systems.
Common dimensions include lengths from 12 inches to 15 inches and widths around 4.125 inches. The bracket mounts using standard bolt sizes, such as 5/8-inch or 3/4-inch studs, with some designs allowing installation in less than five minutes using two 3/4-inch bolts. This straightforward process enables efficient field deployment without specialized tools.
Manufactured to meet Rural Utilities Service (RUS) listing and International Organization for Standardization (ISO) standards, the bracket ensures consistency and compliance in utility applications, supporting energy-saving initiatives and improved security in power distribution networks.
Trusted Post Insulator Bracket Wholesaler
RaxPower is China’s leading manufacturer of pole line hardware, established in 2003 and based in Hebei Province. With over 21 years of manufacturing and export experience, we specialize in producing high-quality Post Insulator Brackets, leveraging our extensive expertise in R&D and production to ensure durability and performance. Our commitment to “quality is life, reputation is base” is reflected in every bracket we manufacture.
Focus
- Pole Line Hardware
- Transmission and Distribution Line Hardware
- Overhead Line Fittings
- ADSS/OPGW/OPPC Accessories
Advantages
- 21 years of dedicated experience in manufacturing, ensuring reliable and long-lasting Post Insulator Brackets
- Own production and galvanizing factory with 17,000 sqm workshops, utilizing advanced hot forging technology for superior strength
- Strict quality control from raw material selection to multi-stage testing, with 100% inspection before packing
- Hot-dip galvanizing adhering to ISO 1461 standards, achieving mean coating thickness over 85 microns for corrosion resistance
- Comprehensive testing including load tests and gauges tests per international standards
- OEM and ODM services, with free samples available and no MOQ requirements
- Direct factory pricing and document support for tender processes
Contact us for more information, custom queries, or to request samples. We welcome visits to our facility.
| Parameter | Value |
|---|---|
| Material | Ductile iron (conforming to ASTM A-536), aluminum, or carbon steel; some models incorporate fiberglass with ultraviolet protective coating |
| Surface Treatment | Hot dip galvanized |
| Length | 12 in to 15 in |
| Width | 4.125 in |
| Voltage Rating | 15 kV to 34.5 kV |
| Mounting Stud Size | 5/8 in or 3/4 in |
| Min Ultimate Load (Vertical) | 1450 – 3150 lbs |
| Min Ultimate Load (Longitudinal) | 1200 – 2550 lbs |
| Min Ultimate Load (Transverse) | 2500 – 10000 lbs |
| Bolt Spacing | 8 in x 10 in (B x C) |
| Weight | 8.3 – 28.0 lbs |
| Standards | RUS listed, ISO standards |
| Application | For phase-over-phase arrangements or armless construction on wood, steel, concrete, or composite poles |
| Installation | Setup in less than 5 minutes using two 3/4 in bolts |
Frequently Asked Questions (FAQS)
What are post insulator brackets and what voltage ratings do they support?
Post insulator brackets are mounting devices used to attach distribution post-type insulators directly to utility poles in power distribution systems. They are designed for voltage ratings from 15 kV to 34.5 kV.
What types of poles are compatible with these brackets?
The brackets can be mounted on wood, steel, concrete, or composite poles, making them versatile for various utility applications.
What materials and dimensions are available?
Construction materials include aluminum for base casting and end fittings, ductile iron hot dip galvanized, fiberglass shafts with ultraviolet protective coating, and high-strength galvanized steel. Typical dimensions include lengths of 9.5, 12, and 15 inches, with shaft diameters of 2 inches.
How is installation performed?
The bracket features a pole-shape back for easy installation and is secured using bolts with stud sizes of 5/8
Are these brackets RUS listed and compliant with industry standards?
Yes, many post insulator brackets are RUS listed. At RaxPower, all products are manufactured to comply with international standards including RUS, ASTM, ANSI, and ISO. We implement strict quality control from raw material selection to finished products, with testing per standards like IEC 120, and our products have passed SGS tests and evaluations by authoritative research institutes.
What is your production capacity and delivery timeline?
RaxPower has no minimum order quantity and can supply any quantity to meet project needs. Our production efficiency is enhanced by automatic machines and semi-automatic molds, with typical delivery times around 15 days. We work to align with specific project timelines to ensure on-time delivery.
Do you offer OEM services and product samples?
Yes, we accept OEM orders based on your drawings, photos, or samples, maintaining consistent quality through our strict quality control system. We also offer free samples for evaluation. For payment, orders up to $1000 require 100% advance payment, while orders over $1000 need a 30% T/T deposit with the balance due before shipment.
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