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The 3M 7100025925 is a bus bar heat shrink tubing designed to insulate and protect rectangular, square, and round bus bars in electrical distribution systems. Manufactured from a specially formulated cross-linked polyolefin, this tubing is flame-retardant and track-resistant, making it suited for demanding electrical environments. It ships in a 20-foot case quantity and fits bus bar outer diameters ranging from 7.57 to 12.86 inches after shrink. Licensed electricians and electrical contractors install this tubing as part of switchgear, panel, and bus duct insulation work.
This tubing is applied in commercial and industrial electrical installations where bus bar insulation is required. Typical use cases include switchgear assemblies, medium-voltage distribution panels, and bus duct terminations. The cross-linked polyolefin construction supports environments where flame spread and tracking resistance are primary concerns. It is sold and used by the foot, with a minimum order quantity of 20 feet per case.
Designed as an OEM-style insulation solution for large rectangular, square, or round bus bars commonly found in commercial and industrial switchgear and electrical distribution equipment.
Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out the bus bar system before applying the tubing. Use a calibrated heat gun to apply uniform heat around the tubing until full recovery is achieved. Avoid using open flame for shrinking, as uneven heat can cause incomplete recovery or damage to the tubing wall.
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