3M 7655-S-INV-4 QT-III Cold Shrink Termination Kit
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Manufacturer 3M
Mfg Catalog # 7655-S-INV-4
Irby Part # 287052


3M™ Cold Shrink QT-III 7640-S-INV & 7650-S-INV Series Inverted Termination Kit includes a single-conductor, skirted termination. It ensures a pliable, tight seal for jacketed concentric neutral and concentric neutral power cables. The conjunction of high dielectric-constant material and sealing compounds allows the termination to withstand voltages of 5 to 35kV.

3M™ Cold Shrink QT-III 7640-S-INV & 7650-S-INV Series Inverted Termination Kit is designed for terminating medium voltage cables in outdoor applications. The UV stable, track-resistant, silicone rubber insulation of the termination has a hydrophobic property and offers a long-lasting service life while minimizing leakage currents in wet conditions. The lower surface stress, high dielectric-constant material offers an optimized BIL performance while ensuring a leak-proof, compact fit. IEEE Approved.

  • Provides a void-free seal to jacketed concentric neutral and concentric neutral power cables
  • High dielectric-constant material regulates the distribution of electric field stress
  • Suitable for outdoor applications
  • Termination has 1.05 to 1.80-in insulation O.D.
  • Accommodates wire sizes of 700 to 1500 kcmil at 5kV, 600 to 1250 kcmil at 8 kV, 500 to 1000 kcmil at 15kV, 250 to 800 kcmil at 25/28 kV, 3/0 AWG to 600 kcmil at 35kV
  • Integrated, step-core design allows for easier installation, while sealing compounds provide constant radial pressure
  • Withstands voltages of 5 to 35kV and is 200 kV BIL-rated
  • Includes a 4-skirt, single-conductor, cold shrink termination
  • IEEE Approved


  • 3M ID: 80610985717
  • Agency Approvals: IEEE
  • BIL: 200 kV
  • Brand: 3M™
  • Breakout Boot: No
  • Cable Insulation Outside Diameter Range: 1.05-1.80 in
  • Cable Insulation Outside Diameter Range (metric): 26.7-45.7 mm
  • Case Quantity: 1
  • Compatible Lug: QL2-A-350-750, QL2-A-4/0-600
  • Conductor Size by Voltage: (5 kV) 700-1500 kcmil, (8 kV) 600-1250 kcmil, (15 kV) 500-1000 kcmil, (25/28 kV) 250-800 kcmil, (35 kV) 3/0 AWG-600 kcmil
  • Conductor Sizes: 1000 kcmil, 1250 kcmil, 1500 kcmil, 250 kcmil, 3/0 AWG, 300 kcmil, 350 kcmil, 4/0 AWG, 400 kcmil, 450 kcmil, 500 kcmil, 600 kcmil, 700 kcmil, 750 kcmil, 800 kcmil, 900 kcmil
  • Family: QT-III
  • Indoor/Outdoor: Indoor Non-skirted
  • Insulation Level: 100%, 133%
  • Insulation Rejacketing: No
  • Maximum Installed Length: 16.00 in
  • Number of Conductors: 3
  • Number of Skirts: 4
  • Product Series: 7650-S-INV
  • RoHS 2011/65/EU Compliant: Undetermined
  • RoHS EU Comments: Contact 3M for information
  • Shielding Type: Concentric Neutral (CN), Jacketed Concentric Neutral (JCN)
  • Trademark: 3M
  • Voltage: 15 kV, 25/28 kV, 35 kV, 5 kV, 8 kV
  • Voltage Application: Medium 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 05400704623
GTiN 00054007046233
Conductor Size 1000 MCM; 1250 MCM; 1500 MCM; 250 MCM; 3/0 AWG; 300 MCM; 350 MCM; 4/0 AWG; 400 MCM; 450 MCM; 500 MCM; 600 MCM; 700 MCM; 750 MCM; 800 MCM; 900 MCM
Applications Outdoor
Cable Type Concentric Neutral (CN); Jacketed Concentric Neutral (JCN)
Family Brand Name 3M
Voltage 892.857/5,000/8,000/15,000/35,000 Volt
Number of Conductors 3

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