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For our smaller Pillar Insulator range click here

For larger sizes click here

Technical Data

Termate's AM1 Standoff Insulator Render and diagrams with the dimensions in mm.

For our smaller Pillar Insulator range click here

For larger sizes click here

The below table shows the AM1 range of Termate standoff insulators.

The complete AM1 range is suitable for applications with an AC Equipment Voltage Ue up to 1000 V or DC Equipment Voltage Ue up to 1500 V

The technical data provided in the table below provides information necessary for product selection and technical assessment in line with IEC and UL product standards.

Part Number3D ModelDescriptionHeight
[H] (mm)
Thread Size*
Thread Depth
[D] (mm)
Tightening Torque
Tensile Strength**
Cantilever Strength**
Box Qty.
AM1-020-05AM1-020-05 STEP file20mm high standoff insulator with M5 thread20M55442002350200
AM1-020-06AM1-020-06 STEP file20mm high standoff insulator with M6 thread20M67842002350200
AM1-025-05AM1-025-05 STEP file25mm high standoff insulator with M5 thread25M55442002350200
AM1-025-06AM1-025-06 STEP file25mm high standoff insulator with M6 thread25M67842002350200
AM1-030-05AM1-030-05 STEP file30mm high standoff insulator with M5 thread30M55442002350200
AM1-030-06AM1-030-06 STEP file30mm high standoff insulator with M6 thread30M67842002350200
AM1-035-05AM1-035-05 STEP file35mm high standoff insulator with M5 thread35M55442002350200
AM1-035-06AM1-035-06 STEP file35mm high standoff insulator with M6 thread35M67842002350200

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

** Tensile and Cantilever Strength figures are based on tests carried out at normal room temperature, nominal 23 °C.

Our Insulators have ISO M inserts with coarse threaded inserts in accordance with BS 3643-2 – Table 1 and ISO 262.

Our metric insulators can be converted into Male/Male or Female/Male versions by fitting studs from our Grub Screw Pack.

The following tables shows the Recognition, Properties and Characteristics of the AM1 range of Termate standoff insulators.

Recognition Reference / Link Preferred name
UL Recognised Component File Number: E505645
EClass 8.0 27-08-10-08 Insulator, plastic
EClass 14.0 27-08-10-03 Bus bar holder (insulator, post insulator)
Properties Value / Measure / Unit
Insulator Material Glass Reinforced Polyamide 6.6 (PA66)
Insert Material Brass
Operating Range in Celsius This material operates in a wide temperature range: −40 °C to +130 °C
Operating Range in Farenheit This material operates in a wide temperature range: −40 °F to +266 °F
Flammability UL 94 V-0
Oxygen Index 32%
Glow Wire 960 °C
Characteristics Value
Maximum Alternating Current Equipment Voltage, Ue 1000 V
Maximum Direct Current Equipment Voltage, Ue 1500 V
Impulse Voltage, Uimp 12 kV

Standoff Insulators:


Termate’s AM1 standoff insulator range provides excellent electrical insulation and mechanical strength for a variety of applications. Compact standoff insulators can also be referred to as pillar insulators, insulating posts, bobbin insulators, or busbar isolators.

This standoff insulator range is available in heights from 20 mm to 35 mm and insert sizes of M5 and M6. Technical data is found on the table above which displays heights, thread size and depth, maximum tightening torques, tensile and cantilever strengths, and box quantities available.

  • Made from UL 94 V-0 rated, self-extinguishing material
  • Halogen Free
  • Operating temperature range of −40 °C to +130 °C (−40 °F to +266 °F)
  • Insulation voltage of up to 1000 V AC, 1500 V DC
  • Equipment voltage of up to 1000 V AC, 1500 V DC

View our standoff insulator cross-reference tool. Find our AM2AM4 and AM6 ranges here.

Our standoff insulators are made from a halogen-free glass-reinforced material, which was specifically chosen for its mechanical and electrical insulation properties.

Brass inserts are used due to this alloy’s resistance to corrosion. The injection moulding process, combined with our excellent quality control and inspection procedures, results in a consistent product across every production run.


The AM1 range of standoff insulators is an important product in the Termate catalogue. Prior to entering production, the insulators were subjected to a comprehensive suite of tests that examined their electrical and mechanical performance capabilities.

All tests were conducted within industry standards and with strict quality control measures enforced throughout. This rigorous testing procedure ensures our products are always performing optimally, providing customers with reliable and high-quality insulation solutions. We take pride in providing our customers with the highest quality of products, ensuring all safety and performance requirements are met.

AM1 standoff insulators are manufactured from material that meets the requirements for UL 94 V-0. UL 94 being a standard for the safety of flammability of plastic materials for parts in devices and appliances released by the Underwriters Laboratories.

Our complete Standoff insulator range are UL Recognised Components, more information can be found at UL Product .


Our standoff insulators are suitable for assemblies up to 1000 V AC or up to 1500 V DC. These insulation supports provide a solution for electrical systems that need the assurance of safe and secure insulation.

In installations which require electrical isolation, they ensure that distance is maintained between two surfaces. This maintains the required level of mechanical strength and electrical insulation needed to safely contain live conductors, such as busbars. Usual installations are within:

  • Battery Energy Storage Systems
  • Electrical panel boards
  • Control panels
  • Switchboards
  • EV power trains
  • Power factor correction
  • Distribution boards
  • Drives, inverters and converters

These electrical installations can be found in a wide range of sectors including power distribution, rail (rolling stock & trackside), renewable energy, UPS (temporary and emergency power), and data centre power distribution.

Termate is committed to the highest standard of customer focus and we have made every effort to maintain the accuracy and completeness of the information provided in this data. Where improvements to our products affect their installation and usage we endeavour to contact any customers who may be affected.

Warranty as stated in our Terms and Conditions of Trading is void if any modification is made to the warranted product.