3M 8564 Breakout Boot
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Manufacturer 3M
Mfg Catalog # 8564
Irby Part # 2505955


  • Ensures excellent insulation and void-free sealing of cable breakouts
  • High dry- and wet-insulation resistance
  • Creates an environmental enclosure for individual cable phases
  • Has an outer jacket diameter range of 1.3 to 1.94 inches
  • 3-way outlet
  • Dark gray silicone rubber construction
  • Withstands temperatures of 221 °F (105 °C)
  • RoHS 2011/65/EU Compliant


  • Cable Accessory Products: Cable Breakout Boot Kits
  • Cable Insulation Outside Diameter Range: 2.52-4.32 in
  • Cable Insulation Outside Diameter Range (Metric): 64.0-109.7 mm
  • Cable Shield Diameter Range: 1.02-1.63 in
  • Cable Shield Diameter Range (Metric): 25.9–41.4 mm
  • Color Family: Gray
  • Dielectric Strength (V/mil): 587 V/mil
  • Elongation: 780 %
  • Inner Diameter After Shrink (Imperial): 1.02 in
  • Inner Diameter After Shrink (Metric): 25.9 mm
  • Inner Diameter Before Shrink (Imperial): 1.63 in
  • Inner Diameter Before Shrink (Metric): 41.4 mm
  • Jacket Outside Diameter Range: 2.52 - 4.32 in
  • Jacket Outside Diameter Range (Metric): 64.0 - 109.7 mm
  • Material: Silicone
  • Maximum Voltage Rating: 35 kV
  • Metallic Shield Diameter Range: 1.28 - 1.62 in
  • Model: Cold-shrink
  • Outer Diameter After Shrink (Imperial): 2.52 in
  • Outer Diameter After Shrink (Metric): 64 mm
  • Outer Diameter Before Shrink (Imperial): 4.32 in
  • Outer Diameter Before Shrink (Metric): 109.7 mm
  • Product Color: Gray
  • Product Type: Cables and Wires Accessories
  • RoHS EU Comments: Contact 3M for information
  • Shrink Type: Cold Shrink
  • Temperature Rating: 356°F (180°C) Class H
  • Tensile Strength (Imperial): 1370 Pound-Force Per Square Inch
  • Transition Type: 1-3 Breakout


UPC 05400743146
Item Long Description One-piece versatile design allows for quick installationAccommodates a wide range of cable sizesNo torches or heat requiredExcellent resistance to ozone and ultra-violet radiationGreat thermal stabilityHigh dry and wet insulation resistanceHighly flexible
GTiN 00054007431466
Type Cold Shrink Boot
Applications to protect the phase leg breakout of 3/C medium voltage power cable from exposure to moisture, contamination, corrosion, ozone, ultraviolet radiation, physical contact and other hazards associated with 3/C termination operating environments
Family Brand Name 3M
Insulation Material Top Insulator
Voltage 892.857/5,000/8,000/15,000 Volt
Color Gray
Material Silicone

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