Cable Breakouts | Heat Shrink Breakouts For 3 & 4 Core Cables

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Cable Breakouts

Cable Breakouts

Cable Breakouts

Heat Shrinkable Moulded Parts – 3M SKE Cable Breakouts

Cable breakouts are used to protect terminated cable ends and multi-core cable crutches against moisture and contaminants in indoor enclosed electrical equipment (switchgear/transformer/cable box) or outdoor (pole mounted) cable termination applications on low voltage power networks, 600/1000V.

The below selection tables enable the specification of the correct cable breakouts manufactured by 3M Electrical using heat shrink technology to provide cable sealing, electrical insulation and mechanical protection to the cable crotch/crutch area on 3 and 4 core low voltage power cables and cable terminations, 600V1000V – the cable breakouts are installed using gas torches.

To provide electrical insulation and sealing to exposed cable ends against environmental conditions, including water ingress, see our range of cable caps manufactured in Cold Shrink technology.

Cable Breakouts

Cable Breakouts for Power Cables up to 1000V 1kV Features

  • High electrical characteristics and mechanical strength for low voltage cable protection, termination and applications
  • Breakouts manufactured from medium wall, cross-linked polyolefin, UV stabilised against irradiation and weathering
  • Halogen and silicon-free material content, noncorrosive, non-toxic, free of lead and aluminium – colour black
  • Breakouts are inline coated with hot melt adhesive inside the cable breakout body and fingers

Heat Shrink Cable Breakouts

3 Core Cables

3 Core Breakouts Power Cables Up To 1kV

3M Heat Shrink Cable Breakout Part Number Breakout
Range on
LV Cable
Ø
Neck
Exp.
Ø
Neck
Recov.
Ø
Finger
Exp.
Ø
Finger
Recov.
Length
Recov.
Wall
Thickness
Neck
Recov.
Wall
Thickness
Finger
Recov.
sqmm mm mm mm mm mm mm mm
SKE 3F/1-1.5 6 – 16 25 09 09 03 70 2.5 1.8
SKE 3F/2 10 – 50 35 15 13 04 100 2.5 1.8
SKE 3F/4 50 – 150 55 23 30 08 170 3.5 2.7
SKE 3F/5 185 – 400 110 35 50 17 215 3.5 3.5
SKE 3F/6 110 35 50 17 215 3.5 3.5
SKE 3F/7 150 56 64 28 260 3.5 3.5

Heat Shrink Cable Breakouts

4 Core Cables

4 Core Breakouts Power Cables Up To 1kV

3M Heat Shrink Cable Breakout Part Number Breakout
Range on
LV Cable
Ø
Neck
Exp.
Ø
Neck
Recov.
Ø
Finger
Exp.
Ø
Finger
Recov.
Length
Recov.
Wall
Thickness
Neck
Recov.
Wall
Thickness
Finger
Recov.
sqmm mm mm mm mm mm mm mm
SKE 4F/0 28 09 08 02 80 2.0 1.5
SKE 4F/1+2 4 – 35 35 15 15 04 100 3.8 1.8
SKE 4F/3+4 25 – 150 57 23 30 06 170 4.0 3.0
SKE 4F/5 120 – 400 95 36 38 14 220 3.5 2.5
SKE 4F/6 117 36 46 14 220 3.5 2.5

 

Material Characteristics

The following figures are average values, established to the best knowledge of 3M Electrical, but not to be used for specification purpose.

Physical Properties Value Test Method
Density 1.05 ± 0.2 g/cm3 ASTM D-1505/D=M/V
Hardness 45 ± 3 Shore D ASTM D-2240
Tensile Strength 10 N/mm² ASTM D-412 / ISO 37
Ultimate Elongation 300 % ASTM D-412 / ISO 37
Water Absorption 0.15 % ASTM D-570 / ISO 62
Longitudinal Shrinkage 10 %
Recovery Temperature 120 °C IEC – 216
Peel Strength 100 N/25 mm Rolling Drum Method

 

Thermal Tests

Operating Temperature Range – 30 °C, + 135 °C DIN 53 466
Thermal Ageing (150 °C for 168 hrs)
Tensile Strength 8 N/mm² ASTM D-412 / ISO 37
Ultimate Elongation 200% ASTM D-412 / ISO 37
Flammability Not Self Extinguishing ASTM D 876
Low Temperature Flexibility – 40 °C ASTM D 2671C

 

Electrical Properties

Volume Resistivity 1 x 1013 Ohm-cm ASTM D-257 / IEC 93
Dielectric Strength 10kV/mm ASTM D-149 / IEC 243

 

➡ Refer to the section below to review the complete range of Cable Breakouts.