Low Voltage Cable Breakout (Insulcore-LV)
Insulcore-LV cable breakout seals the crutch of 2, 3, 4, 5, 6 or 7-core PVC, XLPE, rubber or PILC cable rated up to 3.3 kV, to IP68.
- ASTM D638
- ASTM D792
- ASTM D2240
Installation instructions
Full dimensional specifications and technical data, ready to download.
Choose a size
Selection Charts
- D
- Internal diameter of the body
- d (d1, d2)
- Internal diameter of the core fingers
- L / l
- Overall length / finger length
- s
- As supplied
- f
- After free recovery
- Tb, Tc
- Thickness of body and core (finger) after free recovery, ±10%
| Code | No. of cores | Ds(min) | Df(max) | ds(min) | df(max) | Ls(min) | Lf(min) | ls(min) | lf(min) | Tb(±10%) | Tc(±10%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LV2GBB-0308 S | 2 | 22 | 8 | 9 | 3 | 70 | 85 | 14 | 20 | 2.2 | 2.0 |
| LV2GBB-0308 | 2 | 28 | 8 | 12 | 3 | 70 | 85 | 15 | 20 | 2.2 | 2.0 |
| LV2GBB-0410 | 2 | 32 | 10 | 14 | 4 | 67 | 85 | 15 | 20 | 2.2 | 2.0 |
| LV2GBB-0410 A | 2 | 42 | 11 | 14 | 4 | 80 | 107 | 25 | 42 | 2.2 | 2.0 |
| LV2GBB-0410 L | 2 | 34 | 10 | 14 | 4 | 77 | 107 | 27 | 42 | 3.0 | 3.0 |
| LV2GBB-0610 | 2 | 30 | 10 | 19 | 6 | 110 | 145 | 50 | 60 | 2.0 | 2.0 |
| LV2GBB-0610 L | 2 | 30 | 8 | 19 | 6 | 135 | 165 | 50 | 60 | 2.5 | 2.0 |
| LV2GBB-0615 | 2 | 45 | 15 | 18 | 5.5 | 90 | 110 | 25 | 43 | 3.0 | 3.5 |
| LV2GBB-0720 | 2 | 60 | 20 | 24 | 7 | 95 | 120 | 25 | 34 | 3.0 | 2.5 |
| LV2GBB-0720 A | 2 | 70 | 22 | 30 | 8 | 90 | 120 | 25 | 34 | 3.0 | 2.5 |
| LV2GBB-0830 | 2 | 65 | 30 | 25 | 8 | 120 | 150 | 50 | 60 | 2.0 | 1.8 |
| LV2GBB-0930 | 2 | 70 | 30 | 27 | 8 | 120 | 150 | 50 | 65 | 3.0 | 3.0 |
| LV2GBB-1565 | 2 | 125 | 65 | 46 | 15 | 110 | 130 | 40 | 55 | 2.5 | 2.2 |
| LV2GBB-1565 A | 2 | 150 | 65 | 50 | 15 | 105 | 130 | 40 | 55 | 2.5 | 2.2 |
| LV2GBB-2075 | 2 | 175 | 70 | 40 | 20 | 150 | 210 | 60 | 80 | 2.5 | 2.2 |
| LV2GBB-2075 A | 2 | 200 | 70 | 55 | 20 | 155 | 210 | 62 | 80 | 2.5 | 2.2 |
| LV2GBB-24135 | 2 | 240 | 135 | 65 | 24 | 190 | 245 | 60 | 104 | 2.3 | 2.0 |
| LV2GBB-55175 | 2 | 255 | 175 | 86 | 55 | 160 | 200 | 50 | 80 | 2.8 | 2.5 |
| LV2GBB-55175 A | 2 | 370 | 175 | 156 | 55 | 150 | 200 | 50 | 80 | 2.8 | 2.5 |
| LV3GBB-0308 | 3 | 32 | 8 | 12 | 2.8 | 90 | 104 | 20 | 28 | 2.2 | 1.8 |
| LV3GBB-0309 | 3 | 32 | 9 | 12 | 3 | 85 | 100 | 15 | 24 | 2.0 | 1.7 |
| LV3GBB-0413 | 3 | 36 | 14 | 15 | 4 | 80 | 100 | 15 | 21 | 2.2 | 2.0 |
| LV3GBB-0413 A | 3 | 45 | 14 | 15 | 4 | 80 | 100 | 15 | 21 | 2.2 | 2.0 |
| LV3GBB-0820 | 3 | 60 | 20 | 25 | 8 | 160 | 184 | 45 | 60 | 3.3 | 2.7 |
| LV3GBB-0820 A | 3 | 70 | 20 | 27 | 8 | 155 | 184 | 40 | 60 | 3.3 | 2.7 |
| LV3GBB-1330 | 3 | 80 | 30 | 36 | 13 | 185 | 215 | 60 | 75 | 3.6 | 3.3 |
| LV3GBB-1330 A | 3 | 100 | 30 | 39 | 13 | 185 | 215 | 60 | 75 | 3.6 | 3.3 |
| LV3GBB-2145 | 3 | 110 | 45 | 55 | 21 | 200 | 235 | 70 | 88 | 3.5 | 2.9 |
| LV3GBB-2145 A | 3 | 125 | 45 | 57 | 21 | 190 | 230 | 65 | 88 | 3.5 | 2.9 |
| LV3GBB-1760 | 3 | 119 | 60 | 45 | 17 | 140 | 185 | 60 | 85 | 4.5 | 4.5 |
| LV3GBB-1760 A | 3 | 150 | 60 | 57 | 17 | 130 | 185 | 55 | 85 | 4.5 | 4.5 |
| LV3GBB-2755 | 3 | 140 | 56 | 68 | 28 | 215 | 260 | 75 | 90 | 3.5 | 3.5 |
| LV3GBB-2755 A | 3 | 180 | 58 | 68 | 29 | 200 | 260 | 70 | 90 | 3.5 | 3.5 |
| LV3GBB-3060 | 3 | 200 | 60 | 70 | 30 | 190 | 250 | 70 | 85 | 4.0 | 3.0 |
| LV4GBB-0209 | 4 | 28 | 9 | 9 | 2.5 | 90 | 115 | 15 | 20 | 2.2 | 1.7 |
| LV4GBB-0309 | 4 | 28 | 9 | 9 | 2.6 | 64 | 75 | 22 | 28 | 2.4 | 2.1 |
| LV4GBB-0312S | 4 | 30 | 12 | 10 | 3 | 80 | 100 | 15 | 25 | 2.4 | 1.7 |
| LV4GBB-0312 | 4 | 40 | 12 | 12 | 3 | 78 | 100 | 15 | 25 | 2.4 | 1.7 |
| LV4GBB-0415 | 4 | 41 | 16 | 14 | 4 | 75 | 100 | 15 | 23 | 2.4 | 1.7 |
| LV4GBB-0415 A | 4 | 50 | 17 | 17 | 4 | 75 | 95 | 12 | 23 | 2.4 | 1.7 |
| LV4GBB-0522 | 4 | 50 | 22 | 18 | 5 | 95 | 115 | 30 | 37 | 2.5 | 2.2 |
| LV4GBB-0620* | 4 | 55 | 20 | 20 | 6 | 140 | 150 | 30 | 38 | 3.0 | 2.5 |
| LV4GBB-0821 | 4 | 57 | 26 | 20 | 7 | 140 | 170 | 32 | 48 | 3.5 | 2.5 |
| LV4GBB-0825 N | 4 | 68 | 25 | 25 | 8 | 155 | 188 | 35 | 48 | 3.5 | 2.3 |
| LV4GBB-0925 | 4 | 70 | 30 | 25 | 9 | 155 | 190 | 35 | 48 | 3.7 | 2.6 |
| LV4GBB-1130 | 4 | 80 | 31 | 32 | 10 | 150 | 190 | 28 | 47 | 3.7 | 2.6 |
| LV4GBB-1130L | 4 | 80 | 30 | 35 | 11 | 180 | 210 | 35 | 52 | 3.7 | 2.6 |
| LV4GBB-1334 | 4 | 90 | 42 | 35 | 13 | 170 | 210 | 35 | 52 | 3.7 | 2.6 |
| LV4GBB-1334 A | 4 | 110 | 44 | 35 | 13 | 170 | 208 | 40 | 51 | 3.7 | 2.6 |
| LV4GBB-2454 | 4 | 125 | 44 | 40 | 14 | 170 | 208 | 30 | 51 | 3.7 | 2.6 |
| LV4GBB-2880 | 4 | 180 | 80 | 70 | 28 | 215 | 260 | 75 | 90 | 2.5 | 2.5 |
| LV4GBB-4080 | 4 | 180 | 80 | 70 | 40 | 200 | 260 | 75 | 95 | 3.7 | 2.8 |
| LV4GBB-1880 SA | 4 | 180 | 80 | 63 | 18 | 150 | 175 | 35 | 45 | 2.5 | 2.5 |
| LV4GBB-1880 S | 4 | 180 | 80 | 50 | 18 | 155 | 175 | 35 | 45 | 2.5 | 2.5 |
| LV4GBB-1880 | 4 | 215 | 80 | 50 | 18 | 150 | 175 | 30 | 45 | 2.5 | 2.5 |
| LV5GBB-0308 | 5 | 32 | 8 | 10 | 3 | 95 | 115 | 22 | 28 | 2.1 | 1.7 |
| LV5GBB-0311 | 5 | 32 | 11 | 10 | 3 | 55 | 75 | 15 | 20 | 2.3 | 2.0 |
| LV5GBB-0415 | 5 | 50 | 16 | 15 | 4 | 85 | 110 | 21 | 33 | 3.2 | 2.6 |
| LV5GBB-0415 A | 5 | 57 | 17 | 15 | 4 | 80 | 110 | 21 | 33 | 3.2 | 2.6 |
| LV5GBB-0524 | 5 | 55 | 24 | 18 | 5 | 145 | 155 | 40 | 45 | 3.3 | 2.6 |
| LV5GBB-0832 | 5 | 80 | 32 | 26 | 8 | 155 | 190 | 55 | 65 | 3.3 | 2.8 |
| LV5GBB-0832 A | 5 | 100 | 33 | 32 | 8 | 145 | 190 | 50 | 65 | 3.3 | 2.8 |
| LV6GBB-0412 | 6 | 44 | 12 | 13 | 4 | 55 | 82 | 20 | 30 | 2.2 | 2.0 |
| LV6GBB-0737 | 6 | 85 | 37 | 25 | 7 | 100 | 138 | 30 | 46 | 3.2 | 2.6 |
| LV7GBB-0737 | 7 | 95 | 37 | 26 | 7 | 100 | 135 | 40 | 55 | 2.7 | 2.6 |
| LV7GBB-1845 | 7 | 118 | 46 | 35 | 19 | 110 | 145 | 32 | 52 | 4.3 | 3.0 |
All dimensions are in mm. * New size. Source: GALA INSULCORE Heat Shrink Low Voltage Cable Breakout sheet, Issue 2, December 2025.
INSULCORE Low Voltage breakouts with two finger sizes (d1 and d2)
| Code | No. of cores | Ds(min) | Df(max) | d1s(min) | d1f(max) | d2s(min) | d2f(max) | Ls(min) | Lf(min) | l1s(min) | l1f(min) | l2s(min) | l2f(min) | Tb(±10%) | Tc1(±10%) | Tc2(±10%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LV2GBB-61820 | 2 | 65 | 20 | 44 | 18 | 25 | 6 | 105 | 124 | 28 | 40 | 28 | 40 | 4.0 | 3.1 | 3.0 |
| LV4GBB-1880(2X2)* | 4 | 215 | 80 | 75 | 18 | 45 | 18 | 150 | 175 | 35 | 45 | 35 | 45 | 2.5 | 2.5 | 2.5 |
| LV5GBB-5725 | 5 | 65 | 25 | 23 | 7 | 16 | 5 | 125 | 150 | 40 | 51 | 35 | 40 | 2.5 | 2.5 | 2.0 |
| LV5GBB-7939 | 5 | 90 | 39 | 30 | 9 | 24 | 7 | 133 | 185 | 30 | 50 | 30 | 50 | 2.7 | 2.7 | 2.7 |
| LV5GBB-7939 A | 5 | 100 | 39 | 35 | 9 | 16 | 7 | 133 | 185 | 30 | 50 | 30 | 50 | 2.7 | 2.7 | 2.7 |
All dimensions are in mm. * New size. Source: GALA INSULCORE Heat Shrink Low Voltage Cable Breakout sheet, Issue 2, December 2025.
Material properties
Technical Specification
| Properties | Value | Standard |
|---|---|---|
| Tensile Strength | 12 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation | 350% (min) | ASTM D638 |
| Density | 1.05± 0.2 gm/cm³ | ASTM D792 |
| Hardness | 45 ±10 Shore D | ASTM D2240 |
| Water Absorption | 0.2 % (max.) | ASTM D570 |
| Accelerated Ageing | (120 °C for 500 hrs.) | ASTM D2671 |
| Tensile Strength (after ageing) | 11 N/mm² (Mpa) (min.) | ASTM D638 |
| Ultimate Elongation (after ageing) | 300% (min.) | ASTM D638 |
| Low Temp. Flexibility (-40 °C for 4 hrs.) | No Cracking | ASTM D2671 |
| Heat Shock (250 °C for 30 min.) | No Cracking or Flowing | ESI 09-11 |
| Shrink Temperature | 125 °C | IEC 216 |
| Continuous Temp. Limit | -40 to 100 °C | IEC 216 |
| Dielectric Strength | 12 kV/mm. (min) | ASTM D149 |
| Volume Resistivity | 1 x 10¹⁴ Ohm.cm (min) | ASTM D257 |
| Dielectric Constant | 5 (max) | ASTM D150 |
Source: GALA INSULCORE Heat Shrink Low Voltage Cable Breakout sheet, Issue 2, December 2025 (Technical Qualification Report No. QR 1012).
Dimensions & Drawings
Insulcore-LV seals the crutch — the point where a multi-core cable's individual cores separate — on 2, 3, 4, 5, 6 or 7-core PVC, XLPE, rubber or PILC cable up to 3.3 kV.
The breakout is made from cross-linked polyolefin and internally coated with hot melt adhesive, giving IP68 water/moisture proofing once installed. Custom dimensions are available on request.
Covered on this page
- Heat Shrink Low Voltage Cable Breakout
Features & Benefits
- Seals the crutch of 2–7 core PVC, XLPE, rubber and PILC cable up to 3.3 kV
- Cross-linked polyolefin construction, internally hot-melt-adhesive lined
- IP68 water/moisture proofing once installed
- Custom dimensions available on request
- Tensile strength 12 N/mm² min and ultimate elongation 350% min (ASTM D638); density 1.05±0.2 g/cm³ (ASTM D792)
- Hardness 45±10 Shore D (ASTM D2240), water absorption 0.2% max (ASTM D570)
- Shrink temperature 125°C, continuous temperature limit -40°C to +110°C (IEC 216)
- Dielectric strength 12 kV/mm min (ASTM D149), volume resistivity 1 x 10¹⁴ ohm.cm min (ASTM D257)
- Heat shock 250°C for 30 minutes — no cracking or flowing (ESI 09-11); low temperature flexibility -40°C for 4 hours, no cracking (ASTM D2671)
- Technical Qualification Report No. QR 1012
Applications
- Multi-core LV cable crutch sealing
- PVC, XLPE, rubber and PILC cable up to 3.3 kV
Standards & Compliance
- ASTM D638
- ASTM D792
- ASTM D2240
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
- ASTM D150
FAQs
Frequently Asked Questions
What is the Low Voltage Cable Breakout used for?
It is used for:
- Multi-core LV cable crutch sealing
- PVC, XLPE, rubber and PILC cable up to 3.3 kV
How do I choose the right size?
Use the selection chart on this page: it lists every code with its dimensions, and the key above it says what each column means. If you are not sure which fits, send the dimensions you are working to with the form below.
Which standards and test methods are quoted for it?
These, with the values in the Technical Specification on this page:
- ASTM D638
- ASTM D792
- ASTM D2240
- ASTM D570
- ASTM D2671
- ESI 09-11
- IEC 216
- ASTM D149
- ASTM D257
- ASTM D150
Where can I download the datasheet?
From the "Download datasheet" button at the top of this page, or here:
Can I get a quote, a sample or a size that is not listed?
Send your cable details, quantity and application with the "Request a Quote or Sample" form at the foot of this page. For a size or variant that is not in the chart, describe what you need there, or use Technical support at the top of the page, and the technical team will confirm what can be supplied.
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