Our range of Pillar Insulators is designed to provide exceptional electrical insulation and mechanical support in a wide range of applications, including those where high fire retardancy and low smoke emissions are required. Made from specialised polyamide, selected to meet NF F16- 101/102 requirements, our range offers high mechanical and insulating capabilities while simultaneously ensuring burning and smoke toxicity standards are met. 

 Our range includes a variety of heights, lengths and insert sizes.

  • Self-extinguishing, UL94-V0 rated
  • Halogen and phosphorus free
  • Insulation voltage: 1000 V
  • Burning Behaviour I rating: I3
  • Smoke and toxicity F rating: F2




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Part Number Height [H] (mm) Width [W] (mm) Thread Size [M]* Thread Depth [D] (mm)
3M420F 20 12 M4 5
3M520F 20 12 M5 5
3M425F 25 12 M4 5
3M525F 25 12 M5 5
3M430F 30 12 M4 5
3M530F 30 12 M5 5
3M540F 40 12 M5 5
3M550F 50 12 M5 5
3M560F 60 12 M5 5




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Part Number Height [H] (mm) Width [W] (mm) Thread Size [M]* Thread Depth [D] (mm) Length [L] (mm)
3M415H 15 12 M4 5 16
3M515H 15 12 M5 5 14
3M420H 20 12 M4 5 16
3M520H 20 12 M5 5 14
3M425H 25 12 M4 5 16
3M525H 25 12 M5 5 14
2M430H 30 12 M4 5 16
3M530H 30 12 M5 5 14
3M540H 40 12 M5 5 14
3M550H 50 12 M5 5 14
3M560H 60 12 M5 5 14



space Pillars MM pillars MM

Part Number Height [H] (mm) Width [W] (mm) Thread Size [M]* Length [L] (mm)
3M415M 15 12 M4 16
3M515M 15 12 M5 14
3M420M 20 12 M4 16
3M520M 20 12 M5 14
3M425M 25 12 M4 16
3M525M 25 12 M5 14
3M430M 30 12 M4 16
3M530M 30 12 M5 14
3M540M 40 12 M5 14
3M550M 50 12 M5 14
3M560M 60 12 M5 14


*Fixing details: Hole diameter = Standoff thread size [M]+1 mm. e.g. M6 Thread = 7 mm hole diameter.

For tightening torque values, please refer to the data sheet.

Material Zero halogen and phosphorus free polyamide 6 (PA6) with low smoke emissions and flame retardant
Female Insert Material Brass
Male Insert Material Mild Steel, Zinc Plated & Passivated
Operating Temperature -20°C to +100°C
Flammability UL94-V0
NF F Classification 16-101/102, I3, F2
Oxygen Index 32%
Glow Wire 960°C


Equipment Voltage, Ue 1000 V AC / 1500 V DC
Insulation Voltage, Ui 1000 V AC / 1500 V DC
Impulse Voltage, Uimp 12 kV





Our Pillar Insulators are made from halogen and phosphorus free polyamide 6 (PA6)  with low smoke emissions and flame retardant. This material has been independently tested and complies with the NF F16 101/102 requirements as stated. Unlike with porcelain or DMC (dough moulded compound) insulators, this material choice allows our standoffs to be injection moulded, which facilitates increased accuracy compared to compression moulded or resin cast alternatives.


As with all Termate products, our Pillar Insulators have been subjected to expert testing in order to ensure suitability for their intended application. Each range is fully compliant with the applicable clauses within the international standard for low-voltage switchgear and controlgear assemblies, IEC 61439. We can review compliance with other standards upon request. In addition, the material for this range has been subjected to specific testing for reaction to fire, opacity of smoke and toxicity of gases emitted. Our testing procedure is designed to give you the confidence that, when correctly installed in your own assembly, our products will meet the specified ratings. 


Our Pillar Insulators are designed to provide insulated support in assemblies that include live conductors, maintaining the distance between two surfaces to ensure they do not touch. Additionally, our Pillars are optimised to meet specific demands on flammability and release of particulates during a fire. They are suitable for use in electronics and motors, underground rail rolling stock, tunnels, marine, mining and oil and gas applications. It is essential that you ensure our range is fully compliant with your specific requirements prior to use; our highly experienced team are available to provide more technical details and advise on product use.

Termate have been expertly manufacturing specialised insulation products in the heart of the UK for more than 60 years. We are dedicated to applying our engineering expertise in order to design and manufacture top-of-the-range components, so you can be assured that our products will be high quality. Our in-house product development team constantly seeks to improve existing products and develop new, innovative parts for our customers.


    Thank you for your interest in Termate products. If you would like to get in touch, please call, email or use the contact form. We aim to respond to all enquiries within 24 hours.

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