3M™ Bus Bar Heat Shrink Tubing BBI-7A

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Get durable and reliable protection that helps prevent failures and downtime in applications from 5-35 kV. 3M™ Heat Shrinkable Bus Bar Tubing BBI-7A covers and insulates rectangular, square or round bus bars, and resists splitting and solvents.

Expanded Wall Thickness
0.048 in
Maximum Operating Temperature (Celsius)
110 Degree Celsius
Maximum Recovered Tubing I. D.
2.55 in
Minimum Expanded Tubing I. D.
6.78 in
Operating Temperature (Celsius)
-55 °C to 110 °C
Operating Temperature Range (Celsius)
-55 °C to 110 °C
Outside Diameter (Bar Circumference)
8.28 - 13.00 inch
Overall Length (Metric)
15.24 Meter, 6.1 Meter
Product Color
Orange, Red
Product Technology
Heat Shrink
Product Type
Bus Bar Tubing
Recovered Wall Thickness
0.13 in
Rectangular Size
(4 x 1/4) to (4 x 3/4) Inch (for 35 kV), (4 x 1/4) to (6 x 3/4) Inch (for 5 kV, 8 kV, 15 kV, 25 kV)
RoHS 2011/65/EU Compliant
RoHS EU Comments
RoHS 2011/65/EU compliant without exemption
Round Size (Diameter)
See Sizing Chart on Data Sheet
Rectangular, Round, Square
Shrink Ratio
1.5 : 1
Square Size
(2-1/2 x 2-1/2) Inch (for 25 kV), (2-1/2 x 2-1/2) to (3 x 3) Inch (for 5 kV, 8 kV, 15 kV), 8.28 - 13.00 inch OD (for 35 kV)
Units per Case
15 kV, 25 kV, 35 kV, 5 kV, 8 kV

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Manufacturing Origin: USA

The designation that a product is Manufactured in the USA means the product undergoes substantial transformation in one of our U.S. Manufacturing plants. Some products contain imported components.

Note: 3M products offered on a government contract that require country of origin representation must be certified by 3M Trade Compliance. Contact customer service at 800-245-3573 to request a certificate.