UL 10362 PFA Wire — 250°C / 600V High-Temperature Internal Wiring
Melt-Processable PFA Insulation Combining 250°C Performance with Thin-Wall Flexibility
UL Style 10362 is a single-conductor appliance wiring material (AWM) insulated with extruded PFA (perfluoroalkoxy) fluoropolymer, rated for 250°C continuous operation at 600V AC. Recognized under UL Subject 758, the style covers conductor sizes from 30 AWG to 4/0 AWG in solid or stranded construction. PFA shares the same upper temperature rating as PTFE, but unlike tape-wrapped PTFE it is melt-processable — allowing a thin, dimensionally uniform insulation wall and noticeably better flexibility. CableApex supplies UL 10362 wire as a UL Recognized Component — file on record — meeting the full dimensional and performance requirements of UL 758 AWM.
UL 10362 Specification Summary
- Style Number: UL 10362 (AWM, UL 758)
- Temperature Rating: 250°C continuous
- Voltage Rating: 600V AC
- Flame Rating: Horizontal flame
- Conductor Range: 30 AWG – 4/0 AWG, solid or stranded
- Insulation Material: Extruded PFA (perfluoroalkoxy)
- Min. Insulation Wall (30–10 AWG): 10 mils average / 8 mils at any point (≈ 0.25 mm / 0.20 mm)
- Min. Insulation Wall (9–2 AWG): 30 mils average / 27 mils at any point
- Min. Insulation Wall (1–4/0 AWG): 45 mils average / 41 mils at any point
- Conductor Options: Bare or tinned copper
- UL Status: UL Recognized Component — file on record
- Intended Use: Internal wiring of appliances and electronic equipment
Conductor & Dimension Reference
The values below cover the most commonly specified hook-up range. AWG is the primary sizing reference, with metric cross-section shown for convenience. Final dimensions follow the production datasheet on a per-order basis.
| Gauge (AWG) | Cross-Section (mm²) | Stranding | Ins. Wall (mm) | Nom. OD (mm) | Max. Resistance (Ω/km) |
|---|---|---|---|---|---|
| 26 AWG | 0.13 | 7/0.16 | 0.25 | 0.95 | 145.0 |
| 24 AWG | 0.20 | 7/0.20 | 0.25 | 1.10 | 89.4 |
| 22 AWG | 0.33 | 7/0.25 | 0.25 | 1.30 | 57.6 |
| 20 AWG | 0.52 | 19/0.18 | 0.25 | 1.50 | 36.4 |
| 18 AWG | 0.82 | 19/0.23 | 0.25 | 1.75 | 23.2 |
| 16 AWG | 1.31 | 19/0.29 | 0.25 | 2.05 | 14.6 |
Typical Application Environments
The pairing of 250°C thermal endurance with a thin, flexible wall makes UL 10362 PFA wire the preferred internal lead in equipment where both heat and routing constraints matter:
- Industrial heaters and thermal processing equipment: Lead wiring inside the heated zone holds full dielectric strength at sustained 250°C, well above the limit of PVC, XLPE, or FEP.
- Sensors, thermocouples, and instrumentation: The thin, uniform PFA wall keeps outer diameter small in dense sensor harnesses while surviving repeated heat cycling without embrittlement.
- Semiconductor and vacuum equipment: PFA’s extremely low outgassing and zero plasticiser content suit cleanroom and vacuum-chamber wiring where trace contamination is unacceptable.
- Chemical and laboratory instruments: The non-porous fluoropolymer surface resists acids, alkalis, solvents, and fuels, and tolerates autoclave and solvent-wipe cleaning cycles.
- Lighting ballasts and ignition assemblies: Compact high-temperature internal wiring requiring a flexible, abrasion-tolerant 250°C lead in a confined enclosure.
UL 10362 vs Related High-Temperature Styles
Buyers specifying a 250°C internal wire routinely weigh PFA, PTFE, FEP, and silicone against one another. The table below covers the four UL AWM styles most often compared with UL 10362:
| UL Style | Insulation | Temp | Voltage | Key Characteristic vs UL 10362 |
|---|---|---|---|---|
| 10362 (this page) | PFA | 250°C | 600V | Melt-processable thin wall + 250°C; best balance of heat, flexibility, and uniformity |
| 1659 | PTFE | 250°C | 600V | Same temp; higher abrasion resistance but stiffer and tape-wrapped rather than extruded |
| 1332 | FEP | 200°C | 300V | Similar processing to PFA but 50°C lower and half the voltage; lower unit cost |
| 3135 | Silicone | 200°C | 600V | Greater flexibility and lower cost, but thicker wall and 50°C lower ceiling |
What Buyers Usually Confirm Before Ordering
- Required AWG size and stranding
- Bare or tinned copper conductor
- Colour requirement
- Spool, reel, or cut-to-length packaging
- Installation environment and peak operating temperature
- Quantity and destination market
UL Recognition
All UL 10362 wire supplied by CableApex is produced under active UL Follow-Up Service as a UL Recognized Component — file on record. Each production reel carries the UL Recognized Component mark in accordance with UL Subject 758 marking requirements. Full recognition documentation is available on request for purchasing, compliance, or import customs purposes.
Order Information
Minimum order quantity is 100 metres per colour per gauge. Quotations are returned within 12 hours of enquiry. Please indicate AWG size, quantity, colour, and preferred delivery port in the form below.
Related UL Styles for Comparison
- UL 1659 PTFE Wire — 250°C / 600V Fluoropolymer AWM
- UL 1332 FEP Wire — 200°C / 300V Fluoropolymer AWM
- UL 3135 Silicone Wire — 200°C / 600V Totally Enclosed
- All AWM Wire Styles
