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Bushings

Termate’s range of through bushings are designed to allow conductors to pass through internal enclosure walls without need for additional insulation.

They enable functional unit separation of Form 2, Form 3 or Form 4 enclosure separation in compliance with IEC 61439-2.

Both designs accept up to four different conductor sizes, from 3 mm up to 10 mm thick.

Compatible insulated cable boots are available for both bushing sizes, these are suitable for Form 4 Type 5 applications (BS EN IEC 61439-2).

B4-30

3D Render of Termate's B4-30 Busbar Bushing

B4-50

3D Render of Termate's B4-50 Busbar Bushing
Part Number3D ModelConductor sizes (mm)Ue (AC/DC)Ui (AC/DC)Uimp
B4-30B4-30 STEP file20×3, 20×4, 30×5, 30×10690 V690 VkV
B4-50B4-50 STEP file25×5, 20×10, 40×10, 50×10500 V500 VkV

Common Technical Information (B4-30 & B4-50)

  • Material: Glass Reinforced Polyamide 6.6
  • Conductor Temp.: 140 °C
  • Flammability: UL 94 V-0
  • Glow Wire: 960 °C

In line with the limits set out in IEC 61439, insulating components in contact with conductors may be required to continuously operate at an average of 140 °C (max. 145 °C).

This range of products meets the requirement, the material for them being assigned thermal class F established using methods similar to IEC 60085

B4-30Boot 

3D rendering and diagram showing the dimensions of the B4-30 Boot Bushing

B4-30S-Boot 

3D rendering and diagram showing the dimensions of the B4-30S Boot Bushing

B4-50BOOT

3D rendering and diagram showing the dimensions of the B4-50 Boot Bushing
Part Number3D ModelDescriptionMax. Cable size (mm²)
B4-30BOOTB4-30BOOT STEP fileAngled Boot for B4-301×300
2×240
B4-30S-BOOTB4-30S-BOOT STEP fileStraight Boot for B4-301×300
B4-50BOOTB4-50BOOT STEP fileAngled Boot for B4-501×500
2×300

Boot Properties

  • Boot Material: Black PVC
  • Operating Temp.: Max. 90 °C continuous
  • Flammability: UL 94 V-0
  • Glow Wire: 650 °C

B4-30 Bushings—Versatility

Diagram B4-30 Bushing with a 20×3 mm Conductor
Diagram B4-30 Bushing with a 20×4 mm Conductor
Diagram B4-30 Bushing with a 30×5 mm Conductor
Diagram B4-30 Bushing with a 30×10mm Conductor
Diagram to show the rotation of the B4-30 Bushing to suit application
Diagram showing the dimensions of the B4-30 Bushing
Diagram showing the side view of the B4-30 Bushing

B4-50 Bushings—Versatility

Diagram B4-50 Bushing with a 25×5 mm Conductor
Diagram B4-50 Bushing with a 20×10 mm Conductor
Diagram B4-50 Bushing with a 40×10 mm Conductor
Diagram B4-50 Bushing with a 50×10 mm Conductor
Diagram to show rotation of the B4-50 Bushing to suit application
Diagram to show dimensions of the B4-50 Bushing
Diagram to show side dimensions of the B4-50 Bushing

B4-30 Bushings—Punching Details

B4-30 Bushing; Fixing/Punching details

B4-50 Bushings—Punching Details

Termate B4-50 Punching/Fixing diagram; showing 4×M6 screw holes set on a 47×47mm square, surrounding a 57mm diameter punch

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.