Description
Standoff Insulators for Busbar Support
Standoff insulators provide electrical separation and mechanical support between busbars, conductors and the surrounding switchboard or electrical enclosure.
Manufactured from compression-moulded glass-reinforced polyester, the SOIRED range combines electrical insulation with high mechanical strength and dimensional stability.
The insulators feature moulded-in brass threaded inserts for secure mounting and are available with metric threads from M6 to M12.
Standoff Insulator Features
- 660V rated
- Compression-moulded construction
- Glass-reinforced polyester material
- High dielectric strength
- Arc-quenching and non-tracking properties
- Non-flammable material
- High mechanical strength
- Good dimensional stability
- Wear and corrosion resistant
- Moulded-in brass inserts
- Metric thread sizes
- Multiple heights and widths available
These properties make the range suitable for supporting live conductors and busbars while maintaining electrical separation from mounting structures.
Available Busbar Insulator Sizes
Engineering Supplies stocks a range of busbar standoff sizes:
| Part Number | Thread | Height | Width |
|---|---|---|---|
| SOIRED25M6 | M6 | 25mm | 30mm |
| SOIRED35M8 | M8 | 35mm | 40mm |
| SOIRED35M10 | M10 | 35mm | 40mm |
| SOIRED40M8 | M8 | 40mm | 40mm |
| SOIRED40M10 | M10 | 40mm | 40mm |
| SOIRED50M8 | M8 | 50mm | 50mm |
| SOIRED50M10 | M10 | 50mm | 50mm |
| SOIRED50M12 | M12 | 50mm | 50mm |
| SOIRED60M12 | M12 | 60mm | 55mm |
| SOIRED76M10 | M10 | 76mm | 60mm |
Select the size according to the required busbar clearance, mechanical load, mounting arrangement and electrical design of the assembly.
Standoff Insulators for Switchboards
These electrical insulators suit applications including:
- Busbar support
- Switchboards
- Distribution boards
- Control panels
- Electrical cabinets
- Power distribution assemblies
- Industrial electrical equipment
- Mining switchboards
- Infrastructure projects
- OEM electrical assemblies
By holding conductive components away from the mounting surface, the insulator provides both physical support and the required electrical separation within the assembly.
Glass-Reinforced Polyester Insulators
The compression-moulded body uses glass-reinforced polyester, giving the insulator a combination of mechanical strength and electrical insulating performance.
The material also provides resistance to wear and corrosion and maintains good dimensional stability.
In addition, each insulator incorporates brass threaded inserts moulded into the body. This provides a secure mounting point for busbars and other supported components.
Choosing the Correct Standoff Insulator
Choose the correct standoff insulator according to more than thread size alone.
Consider:
- Required height and clearance
- Busbar dimensions
- Mechanical loading
- Thread size
- Mounting arrangement
- Electrical operating voltage
- Clearance and creepage requirements
- Environmental conditions
The overall switchboard or electrical assembly must meet the applicable design and installation requirements for the application.
Browse our Switchboard Accessories range for DIN rail, neutral and earth bars and related switchboard components.
You can also view our complete Switchboard range for insulating panels and other electrical assembly products.
Buy Standoff Insulators in Australia
Engineering Supplies stocks standoff insulators at our Perth warehouse for switchboard builders, electrical contractors, mining companies, OEMs and industrial customers throughout Australia.
Choose the required thread, height and width from the product options above.
For stock availability or assistance selecting the correct size, contact Engineering Supplies on (08) 9258 8444 or email sales@engsup.com.au.
For information on Australian Standards and standards applicable to electrical equipment and assemblies, visit Standards Australia.
