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UL 3644

UL 3644 wire manufactured by Rowe Industries by using a single extrusion of silicone, which translates into less manufacturing processes and meaning lower prices. It's also lightweight and formed from base silicone rubber without the fiberglass braid found on most silicone wire products. Without the braid, there are no fraying issues, a reduced number of splices making it easier to process and strip, especially in high volume situations.  The braidless UL3644 wire also features better tensile strength as well as better abrasion and cut resistance, compared to other similar products on the market, most notably Radix's Sil-A-Blend.  See the difference in this video below.

14 items

3644-2-259t
UL3644-BSN
Approx LBS/MFT210
AWG Size2
Cond. MaterialTinned Copper
Conductor Stranding259
CSA TypeAWM I A/B FT-2
Insul. MaterialSilicone Rubber
Max. Temp200C
No. of Strands259
Requires Quote per FT 
3644-1-259t
UL3644-BTN
Approx LBS/MFT265.24
AWG Size1
Cond. MaterialTinned Copper
Conductor Stranding259
CSA TypeAWM I A/B FT-2
Insul. MaterialSilicone Rubber
Max. Temp200C
No. of Strands259
Requires Quote per FT 
3644-1/0-259t
UL3644-BUN
Approx LBS/MFT335.61
AWG Size1/0
Cond. MaterialTinned Copper
Conductor Stranding259
CSA TypeAWM I A/B FT-2
Insul. MaterialSilicone Rubber
Max. Temp200C
No. of Strands259
Requires Quote per FT 
3644-2/0-259t
UL3644-BWN
Approx LBS/MFT422.22
AWG Size2/0
Cond. MaterialTinned Copper
Conductor Stranding259
CSA TypeAWM I A/B FT-2
Insul. MaterialSilicone Rubber
Max. Temp200C
No. of Strands259
Requires Quote per FT 
3644-3/0-259t
UL3644-BYN
Approx LBS/MFT527.78
AWG Size3/0
Cond. MaterialTinned Copper
Conductor Stranding259
CSA TypeAWM I A/B FT-2
Insul. MaterialSilicone Rubber
Max. Temp200C
No. of Strands259
Requires Quote 
3644-4/0-259t
UL3644-BZN
Approx LBS/MFT671.22
AWG Size4/0
Cond. MaterialTinned Copper
Conductor Stranding259
CSA TypeAWM I A/B FT-2
Insul. MaterialSilicone Rubber
Max. Temp200C
No. of Strands259
Requires Quote 

UL 3644 Wire Construction:

  • Conductor
    • Material: Stranded, Tinned Copper
    • Available Sizes: 18 AWG to 4/0
  • Insulation
    • Material: Braidless Silicone Rubber compound - Low Smoke, Zero Halogen (LSZH) and Flame Retardant
    • Paper Wrap: 8 AWG to 4/0 only

UL3644 Wire Applications: UL 3644 wire is designed for use in appliances, Military, space, and industrial areas where high abrasion resistance, high voltage, and flexibility are major requirements.

UL 3644 Wire Ratings and Approvals:

  • Voltage Rating: 1000V (Maximum AC voltage rating in the air)
  • Temperature Rating: 200°C continuous use
  • Industry Ratings
    • CSA AWM 1 A/B
    • CSA FT-2 Flame test