📝 Description
Used product.
Pack of 10 pieces H40 M10 hexagonal column-type spacer insulators, designed as busbar supports for mounting, mechanically supporting and electrically insulating copper or aluminium busbars inside electrical distribution panels and electrical equipment.
The components are manufactured by compression moulding of BMC (Bulk Moulding Compound) thermosetting insulating material, consisting of a polyester compound reinforced with glass fibre. This material is designed to provide good electrical insulation, mechanical strength and dimensional stability, even under thermal and electrodynamic stress.
The hexagonal design facilitates installation and tightening, while the threaded metal inserts allow busbars and support elements to be securely fastened.
⚙️ Technical Specifications
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Type: Hexagonal column-type spacer insulator
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Application: Busbar support for electrical panels
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Quantity: 10 pieces
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Insulating material: BMC thermosetting polyester
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Reinforcement: Glass fibre
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Colour: Brown
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Manufacturing process: Compression moulding
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Metal inserts: White zinc-plated steel
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Overall height: 40 mm
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Maximum body diameter: 40 mm
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Hexagonal width across flats (SW): 36 mm
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Thread: M10
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Usable thread depth: 14 mm
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Rated operating voltage (Ue): Up to 1000 V AC / 1500 V DC
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Power-frequency withstand voltage: 6 kV AC for 1 minute
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Rated impulse withstand voltage (Uimp): 12 kV
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Material dielectric strength: > 10 kV/mm
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Arc resistance: > 180 seconds
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Rated tensile strength: Approx. 4.5 kN
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Rated bending strength: Approx. 3.5 kN
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Compressive strength: Approx. 60 kN
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Recommended maximum tightening torque: 22 Nm
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Continuous operating temperature: -40 °C to +130 °C
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Self-extinguishing rating: UL94 V-0
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Moisture absorption: < 0.2%
📏 Dimensional Table
| Model / Type |
Height (H) |
Diameter / Width Across Flats (Ø / SW) |
Thread (M) |
Thread Depth (T) |
| Busbar support insulator |
40 mm |
40 mm / 36 mm |
M10 |
14 mm |
🔧 Main Functions
- Supporting and fastening copper and aluminium busbars.
- Electrical insulation between conductive components and the electrical panel structure.
- Maintaining insulation distances between busbars and metal components.
- Withstanding electrodynamic forces generated during potential short circuits.
- Providing mechanical support for electrical connections.
- Ensuring stability of the busbar distribution and connection system.
🏭 Applications
- Industrial electrical distribution panels.
- Low-voltage electrical cabinets.
- Copper busbar support systems.
- Aluminium busbar support systems.
- Control and switchgear panels.
- Electrical power equipment.
- Electrical power distribution and isolation systems.
⭐ Advantages
- Thermosetting polyester insulating body reinforced with glass fibre.
- High dielectric strength.
- Good resistance to mechanical stress.
- Designed to withstand electrodynamic forces.
- Zinc-plated steel metal inserts.
- Hexagonal profile for easier tightening.
- Resistance to high and low temperatures.
- Self-extinguishing material with declared UL94 V-0 rating.
- Low moisture absorption.
- Pack of 10 pieces of the same model.
📦 Product Condition
Used product.
Shows normal cosmetic signs of previous installation and handling.
The insulating bodies and metal inserts are visible and appear intact.
The dimensional specifications listed refer to the stated model.
The electrical, mechanical and thermal values, as well as the certifications, are based on the technical specifications provided and have not been independently verified through testing or manufacturer identification documentation.
Compatibility with the electrical panel and installation conditions should be checked before use.
📋 Sale Includes
- 10 H40 M10 hexagonal column-type spacer insulators.
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All components are the same model and dimensions.
The package includes 10 pieces.
Sold exactly as described.
Summary
Pack of 10 H40 M10 hexagonal spacer insulators, made from glass-fibre-reinforced BMC thermosetting polyester insulating material, with zinc-plated steel metal inserts. Designed to support and electrically insulate copper and aluminium busbars inside industrial electrical panels.
Dimensions: 40 mm height, 40 mm diameter, 36 mm hexagonal width across flats, M10 thread and 14 mm thread depth.
Declared specifications: Operating voltage up to 1000 V AC / 1500 V DC, 12 kV impulse withstand voltage, UL94 V-0 rating and operating temperature from -40 °C to +130 °C.
