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The 3M 7010348853 is a cross-linked polyolefin heat-shrink bus bar tubing designed to protect and insulate rectangular, square, and round bus bars in high-voltage electrical assemblies. Manufactured from a specially formulated, flame-retardant, track-resistant polyolefin compound, this tubing shrinks uniformly around the bus bar profile to create a tight, durable insulating jacket. The tubing accommodates a wide range of bus bar sizes, with an outer diameter range of 12.29 to 19.23 inches before shrink. It is sold in a 50-foot length, making it practical for larger installation projects or multiple terminations on a single job.
This tubing is suited for commercial and industrial electrical applications where bus bar insulation is required. Typical installation scenarios include switchgear, panelboards, motor control centers, and distribution equipment. Electricians and electrical contractors working on medium- to high-voltage bus bar assemblies will find the flame-retardant formulation particularly relevant for code-compliant installations in enclosed electrical enclosures. The 50-foot case quantity supports jobsite efficiency when multiple sections of bus bar require coverage.
Designed as an OEM-style insulating sleeve for rectangular, square, and round bus bars in commercial and industrial electrical distribution equipment.
Installation should be performed by a licensed electrician following applicable NEC requirements. De-energize and lock out the bus bar assembly completely before applying any tubing. Use a calibrated heat gun to apply uniform heat during the shrink process, working along the length of the tubing to prevent air pockets or uneven shrinkage. Do not exceed the material rated temperature during application.
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