3M 5777A-MT QS-III 3 Conductor Splice Kit
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Manufacturer 3M
Mfg Catalog # 5777A-MT
Irby Part # 2375448


3M™ 5777A-MT Series Cold Shrink Resin QS-III Inline Trifurcating Cable Splice Kit is designed for splicing 5/8 to 15 kV shielded power cables. The cold shrink design ensures a quick installation and cable size transitions. This armored or non-armored splice kit is perfect for use in cable trays, cable racks, junction boxes and cable hangers, as well as aerial and wet or dry locations.

3M™ 5777A-MT Series Cold Shrink Resin QS-III Inline Cable Splice Kit includes 3 metallic shield sleeves, 6 small and 2 large constant force springs, 2 cold shrink jacket tubes, 2 mastic tape 2229 and more. This cable splice kit uses constant force springs for connecting ground braid jumpers, splice bodies and tapes for moisture-seal applications. The splice body has a specially formulated silicone rubber construction to ensure optimal high- and low-temperature performance. This splice kit is suitable for use with solid dielectric cables such as XLP, XLPE, EPR and more. IEEE Approved.

  • Splices shielded cables
  • Silicon rubber-splice body provides good high- or low-temperature performance and Armorcast™ jacket offers mechanical protection
  • Suitable for use with 10000 and 20000 Series connectors or other UL Listed inline compression connectors
  • Solderless ground braid offers constant force spring connection
  • 1.04 to 1.7-in O.D. insulation
  • Accommodates wire size of 350 to 1000 kcmil
  • Rated for 5/8 to 15 kV applications
  • Includes 3 cold shrink adapter tubes and splice bodies, 6 tubes of P55/R compound, gloves, 5 rolls of Armorcast™ structural material and more
  • IEEE Approved
  • 1 kit/case


  • 3M ID: 80611207384
  • Brand: 3M™
  • Case Quantity: 1
  • Conductor Sizes for 15 kV: 350 kcmil, 500 kcmil, 750 kcmil
  • Conductor Sizes for 5_8 kV: 1000 kcmil, 750 kcmil
  • Connector Included: None
  • Insulation O.D. Range: 1.04 - 1.70 Inch
  • Insulation Outside Diameter Range: 1.04 - 1.70 Inch
  • Number of Conductors: 3
  • Product Series: 5775A-MT, 5776A-MT & 5777A-MT Series
  • Product Technology: Cold Shrink, Armorcast
  • Product Type: Splice
  • RoHS 2011/65/EU Compliant: Undetermined
  • RoHS EU Comments: Contact 3M for information
  • Shielding Type: Tape Shield
  • Splice Type: Inline
  • Suggested Accessory: 3M™ Trifurcating Accessory for 3-C to 3 Single Conductors MT-E
  • Trademark: 3M
  • Typical Splice Length: 58.0 in
  • Typical Splice Length (metric): 147 cm
  • Voltage: 15 kV, 5/8 kV
  • Voltage Application: Low Voltage

Legal Disclaimer

  • 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.


UPC 05400744289
GTiN 00054007442899
Number of Conductors 3
Conductor Size 350 MCM; 500 MCM; 750 MCM
Cable Type Tape Shield
Family Brand Name 3M
Voltage 5/8/15 kV
Splice Type Inline
Product Type Splice

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