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3M HDBB-321-1-250 Heat Shrink Breakout Boot - Heat Shrink Breakout Boots
3MHeat Shrink Breakout Boots

3M HDBB-321-1-250 Heat Shrink Breakout Boot

The 3M Heat Shrink Breakout Boot (SKU 3G-OTH-53020) is a black heat shrink breakout boot from 3M, sold in a pack of 1. It has a 1.5 in I.D. before shrinking and a 0.69 in I.D. after shrinking (MPN HDBB-321-1-250).

SKU 3G-OTH-53020

Also listed as: HDBB3211250 · HDBB 321 1 250

Brand
3M
Item
HDBB-321-1-250 Heat Shrink Breakout Boot
Part Number
HDBB-321-1-250
Category
Heat Shrink Breakout Boots
Available to Order
Also known as:HDBB-321-1-2503M
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

3M
Manufacturer Part Number
HDBB-321-1-250
Color
Black
I.D. After Shrinking
0.69 in
I.D. Before Shrinking
1.5 in

Technical Documents

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Product Description

The 3M Heat Shrink Breakout Boot (SKU 3G-OTH-53020) is a black heat shrink breakout boot from 3M, sold in a pack of 1. It has a 1.5 in I.D. before shrinking and a 0.69 in I.D. after shrinking (MPN HDBB-321-1-250).

Frequently Asked Questions

What is a 3M Heat Shrink Breakout Boot used for?

A 3M Heat Shrink Breakout Boot protects cable splices and terminations where multiple cables branch from a single jacket. It provides strain relief, insulation, and environmental sealing in industrial electrical installations, panel building, and heavy equipment wiring.

What are the specifications of the 3M Heat Shrink Breakout Boot HDBB-321-1-250?

The 3M Heat Shrink Breakout Boot HDBB-321-1-250 has a 1.5 in I.D. before shrinking and a 0.69 in I.D. after shrinking. It is black, sold in a pack of 1, and manufactured by 3M. These dimensions suit cable diameters transitioning from a main jacket to multiple smaller cables.

Where to buy 3M Heat Shrink Breakout Boots worldwide?

3G Electric supplies 3M Heat Shrink Breakout Boots worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this 3M breakout boot.

How to install a 3M Heat Shrink Breakout Boot?

Slide the 3M Heat Shrink Breakout Boot over the cable bundle before splicing. After completing the splice, position the boot over the transition area and apply heat evenly with a heat gun until it shrinks tightly around the cables. Allow to cool before handling.

Used in

Common applications for 3M
Electrical maintenance — 3M Super 33+ electrical tape for insulating splices and bundling wires in control circuits.
Mining cable repair — 3M molded resin pouch for coating cable jackets in mine and portable cable applications.
Utility cable splicing — 3M cold shrink splice kit rated for 15 kV for insulating and repairing power cables.
Industrial wire harnessing — 3M 2520 series varnished cotton cloth tape for abrasion resistance in wire harnessing.
Structural bonding — 3M DP8005 acrylic adhesive for bonding plastics, metals, and composites in assembly operations.
Cable protection — 3M heat shrink tubing for sealing and protecting electrical connections from moisture and abrasion.
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3M Products

3G Electric supplies 3M heat shrink breakout boots. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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