UL 3321 XLPE 150°C 600V High Temperature Wire is a single-core copper wire with cross-linked polyethylene (XLPE) insulation, designed around 600 Vac / 750 Vdc and 150°C parameters. The documented family covers 30 AWG through 4/0 AWG, in solid or stranded copper configurations, with an optional braid covering. It provides a high-temperature internal wiring option for electrical, electronic, medical and appliance equipment.
Send TEBAOFLEX the required conductor size, solid or stranded construction, preferred insulation colour, braid requirement, length and installation condition. We will confirm the final build before quotation and production.
What is UL 3321 XLPE wire?
UL 3321 wire is a 150°C, 600 V class single-conductor XLPE insulated wire. Its cross-linked polyethylene insulation is used where internal equipment wiring needs a higher temperature range, while solid or stranded copper can be selected to match the installation. Search requirements such as 150°C XLPE wire, 600V high-temperature hook-up wire, 750V DC equipment wire and braided XLPE appliance wire describe the main purchasing intent covered by this product family.
Key construction data
- Voltage: 600 Vac / 750 Vdc.
- Temperature: 150°C.
- Conductor: solid or stranded copper.
- Insulation: XLPE (cross-linked polyethylene).
- Optional covering: braid.
- Size range: 30 AWG to 4/0 AWG.
- Reference bend radius: 10 × finished outside diameter.
UL 3321 wire specifications
| Parameter | Specification |
|---|---|
| Product model | UL 3321 |
| Product type | Single-core XLPE insulated high-temperature wire |
| Rated voltage | 600 Vac / 750 Vdc |
| Rated temperature | 150°C |
| Conductor | Solid or stranded copper |
| Insulation | XLPE (cross-linked polyethylene) |
| Optional covering | Braid |
| Documented size range | 30 AWG to 4/0 AWG |
| Reference bend radius | 10 × finished outside diameter |
Selected stranded-conductor size guide
The following documented examples show the size family. Final conductor, insulation thickness, outside diameter, colour and optional braid requirement should be confirmed for each order.
| AWG | Stranding (No./mm) | XLPE insulation | Finished outside diameter |
|---|---|---|---|
| 4/0 AWG | 2146 / 0.254 mm | 2.09 mm | 17.80 ± 0.15 mm |
| 2/0 AWG | 1330 / 0.254 mm | 2.09 mm | 15.00 ± 0.15 mm |
| 1/0 AWG | 1026 / 0.254 mm | 2.09 mm | 13.58 ± 0.15 mm |
| 2 AWG | 665 / 0.254 mm | 1.20 mm | 10.73 ± 0.15 mm |
| 8 AWG | 161 / 0.254 mm | 0.82 mm | 6.40 ± 0.15 mm |
| 12 AWG | 65 / 0.254 mm | 0.82 mm | 4.10 ± 0.10 mm |
| 16 AWG | 26 / 0.254 mm | 0.82 mm | 3.14 ± 0.10 mm |
| 20 AWG | 21 / 0.18 mm | 0.82 mm | 2.60 ± 0.10 mm |
| 24 AWG | 11 / 0.16 mm | 0.82 mm | 2.30 ± 0.10 mm |
| 30 AWG | 7 / 0.10 mm | 0.82 mm | 1.95 ± 0.10 mm |
Applications for 150°C XLPE wire
UL 3321 XLPE wire is intended for protected internal wiring in electrical and electronic equipment, medical equipment, appliances, transformers, motors, electrical heating assemblies, lighting and related equipment where the confirmed voltage, temperature and installation conditions match the selected construction. It is not a replacement for outdoor power cable, wet-location cable or multi-core control cable.
How to specify UL 3321 wire
- Select the AWG size and solid or stranded conductor construction.
- State the insulation colour and whether an optional braid is needed.
- Provide the voltage, equipment temperature, routing and required length.
- Submit the requirements for TEBAOFLEX configuration confirmation.
Solid or stranded conductor selection
A solid conductor can suit fixed internal routing where conductor shape retention is useful. A stranded conductor can be selected when easier routing and greater handling flexibility are required during assembly. The final choice must also match the terminal, joining method, finished diameter and equipment design.
Usage limits and engineering review
The listed 150°C, 600 Vac and 750 Vdc values are product ratings, not approval of a complete machine or installation. Do not assume suitability for direct burial, continuous flexing, outdoor exposure, immersion, unprotected abrasion or a specific flame, oil or chemical test unless those conditions have been separately reviewed. The optional braid must also be specified and confirmed for the required purpose.
For a lower-temperature 600 V XLPE option, compare the UL 3287 XLPE high-temperature wire. Browse the high-temperature and specialty cable range for related internal wiring constructions.
Frequently asked questions
What is the UL 3321 temperature rating?
The documented design temperature is 150°C.
What voltage is UL 3321 wire designed for?
The documented rating is 600 Vac / 750 Vdc.
Can UL 3321 wire be supplied with braid?
Yes. The braid covering is an optional construction element and should be stated in the enquiry.
What conductor sizes are available?
The documented family spans 30 AWG through 4/0 AWG; confirm the required conductor construction with the order enquiry.
Should I choose a solid or stranded conductor?
Select solid copper for an appropriate fixed internal route or stranded copper when assembly handling and routing flexibility are priorities. Confirm the terminal, joining method and finished dimensions before ordering.
