 |
Designed for 24-27kV overhead distribution lines and distribution transformers, our integrated fuse cutout-arrester combinations deliver comprehensive protection against both short-circuit faults and lightning surges. Traditional separate installation of fuse cutouts and surge arresters creates unnecessary challenges for electrical system operators: higher labor costs, increased crossarm space requirements, complex maintenance procedures and uncoordinated protection performance. Our all-in-one solution eliminates these issues by combining two critical protection functions into a single pre-assembled unit, providing commercial and industrial electrical systems with reliable, cost-effective and space-efficient protection.
Our pre-assembled combination units significantly reduce on-site installation time and labor expenses compared to purchasing and installing two separate devices. Electrical contractors can complete the installation in a single visit, minimizing system downtime and reducing overall project costs.
Each unit occupies minimal space on the crossarm and features optimized weight distribution to reduce off-center loading on utility poles. This compact design is particularly valuable for retrofitting existing lines with limited space and for new installations aiming to minimize infrastructure requirements.
With a single SKU for both protection functions, you can streamline your inventory management, reduce storage costs and simplify procurement processes. This also eliminates the risk of mismatched components that can compromise system protection.
The integrated design ensures perfect coordination between the fuse cutout and the surge arrester, providing more reliable protection for your distribution transformers and line equipment. This coordinated approach prevents unnecessary fuse operations during lightning surges while ensuring rapid fault clearance during short-circuit conditions.
Porcelain insulators: The porcelain body is bonded to hardware fittings using Por-Rok anchoring cement manufactured by CGM INC from the USA. This high-quality cement offers rapid solidification, high mechanical strength, low expansion coefficient and superior weather resistance.
Polymer insulators: Hardware fittings are crimped onto fiberglass rods, with the housing and sheds made from high-temperature vulcanized silicone rubber. The one-piece injection molding process ensures excellent sealing performance and superior tracking and erosion resistance.
All ferrous components undergo hot-dip galvanizing with a zinc coating thickness exceeding 86μm, providing excellent corrosion resistance for long-term outdoor use.
Our fuse cutouts feature an advanced single vent design that directs exhaust gases downward and outward during interruption. This design prevents rainwater intrusion, avoids damage to upper line components from free gases and significantly improves the overall interrupting capacity of the unit.
All copper casting components are made from bronze or brass, combining excellent mechanical strength with superior electrical conductivity.
All contact surfaces are silver-plated and feature a convex design to minimize contact resistance and ensure consistent electrical performance.
High-strength memory copper alloy sheets maintain reliable contact with the lower contact even after repeated fuse dropout operations.
Equipped with an arc-shortening copper rod to enhance interrupting capacity during short-circuit faults.
For loadbreak type fuse cutouts, the arc chamber is constructed from special reinforced nylon material. This material offers excellent mechanical strength, anti-aging properties and flame retardancy, making the units suitable for use in high ultraviolet, high altitude and coastal areas.
All our fuse cutout-arrester combinations are manufactured and tested in strict accordance with the latest international standards:
IEC 60282-2:2008
IEEE Std C37.41-2008
IEEE Std C37.42-2009
Each unit undergoes comprehensive type testing and routine inspection to ensure it meets or exceeds all specified performance requirements, providing you with peace of mind and reliable protection for your electrical systems.
Rated voltage(KV) | Rated current(A) | Rated interrupting current(KA) | Lightning impulse withstand voltage to ground (BIL KV) | Minimum power frequency withstand dry voltage to ground (KV) | Minimum creepage distance(mm) |
|---|---|---|---|---|---|
11-15 | 100/200 | 12 | 110 | 42 | 220 |
11-15 | 100/200 | 12 | 125 | 50 | 320 |
24-27 | 100/200 | 12 | 150 | 65 | 470 |
33-38 | 100/200 | 8 | 170 | 70 | 660 |
33-38 | 100/200 | 8 | 170 | 70 | 720 |
33-38 | 100/200 | 8 | 170 | 70 | 900 |
 |  |  |  |  |  |
Note: We also offer these combination units in other voltage ratings including 11-15kV and 33-38kV, with various creepage distance options to meet the specific requirements of different environmental conditions.
24kV overhead distribution line branch protection
Primary side protection for distribution transformers
Outdoor substation feeder protection
Industrial power distribution systems
Rural electrification and grid modernization projects
Commercial building electrical systems
Each unit is fitted with a high-performance HAIVOL brand surge arrester, ensuring reliable lightning surge protection for your valuable electrical equipment. We source only the highest quality materials from reputable suppliers worldwide.
Our manufacturing facilities implement a comprehensive quality management system, with every product undergoing strict testing before shipment. This ensures consistent performance and long service life even in the most demanding operating conditions.
We offer extensive customization options to meet the unique requirements of your projects. Our engineering team can modify insulator materials, creepage distances, mounting brackets and other specifications to match your exact needs.
With years of experience serving electrical utilities and industrial customers worldwide, we understand the challenges of power distribution in different regions and environments. Our products are proven to perform reliably in diverse climates and operating conditions.
When placing your order, please provide the following detailed information to ensure we supply the correct product for your application:
Rated voltage and rated current
Minimum creepage distance requirement
Insulator material (porcelain or polymer)
Whether an arc-shortening rod should be included
Type of mounting bracket required
A standalone fuse cutout provides only short-circuit protection, while an integrated combination unit adds surge arrester functionality in a single compact package. This eliminates the need for separate installation, reduces space requirements and ensures coordinated protection performance.
Yes, our fuse cutout-arrester combinations are specifically designed for outdoor use. They feature excellent weather aging resistance, corrosion protection and are suitable for high ultraviolet, high altitude and coastal areas with high salt spray.
Absolutely. We offer comprehensive customization services including different voltage ratings, current ratings, creepage distances, insulator materials and mounting configurations. Our technical team will work closely with you to develop the ideal solution for your project.
All our products are manufactured in accordance with ISO 9001 quality management standards and undergo rigorous testing at every stage of production. Each unit is individually tested before shipment to ensure it meets all specified performance criteria.
Our experienced technical support team can help you select the appropriate product based on your system voltage, current requirements, environmental conditions and specific protection needs. Contact us today for expert guidance and a personalized recommendation.
Contact our team today to request a competitive quote for our high-quality 24kV fuse cutout arrester combinations. We are committed to providing you with reliable protection solutions that enhance the safety and efficiency of your electrical distribution systems.
