UL21458 mPPE Wire – 80°C 300V Internal Multi-conductor Cable
UL21458 mPPE wire is a UL-listed cable designed for internal wiring in electronic and power equipment. Rated 80°C and 300V, it features flame-retardant mPPE insulation and tinned copper conductor construction, offering consistent performance in dry environments.
UL21458 complies with horizontal flame test requirements and is suitable for use in appliances, industrial control panels, power supplies, and signal circuits where flexibility and thermal durability are essential.
Key Features of UL21458 High-Temperature mPPE Cable
- UL-listed mPPE insulated wire (Modified Polyphenylene Ether)
- Assembly: Two to 100 conductors laid parallel in one plane
- Temperature rating: 80°C
- Voltage rating: 300V
- Horizontal flame compliant (UL VW-1)
- Stranded tinned copper conductor
- Lightweight and halogen-free, suitable for dry indoor use
🌱 ESG & Sustainability Statement
Wires insulated with modified polyphenylene ether (mPPE) contribute to sustainability goals by reducing overall material usage and environmental impact. As a halogen-free, RoHS and REACH compliant material, mPPE supports environmentally responsible manufacturing while maintaining excellent electrical and mechanical performance.
Using mPPE-insulated wire helps companies align with ESG (Environmental, Social, and Governance) standards by promoting safer materials, reducing hazardous waste, and supporting lightweight, energy-efficient system design. These characteristics are increasingly valued by ESG-focused investors and supply chain partners seeking products that meet high environmental and safety expectations
UL21458 Wire Electrical Specifications – AWG vs. 20°C Resistance
| AWG | 20°C Resistance (Ω/km) |
|---|---|
| 30 | 381 |
| 28 | 239 |
| 26 | 150 |
| 24 | 94.2 |
| 22 | 59.4 |
| 20 | 36.7 |
| 18 | 23.2 |
| 16 | 14.6 |
Application Areas for UL21458 mPPE Multi-Conductor Cable
- Internal wiring for appliances, automation systems, and control equipment
- Power supplies, control cabinets, EV modules, and relay boards
- Signal distribution, low-voltage communication, and control circuits
- Multi-conductor assemblies in dry indoor environments
