UL 3239 Silicone Rubber High pressure Wire

UL 3239 is a silicone rubber high-pressure wire compliant with UL 758 and UL 1581 standards; it has a rated temperature of 200℃ and a rated voltage range of 3KV to 30KV, and meets the flammability requirements of UL VW-1 & CSA FT1 vertical flame test. The wire uses solid or stranded bare/tinned copper as the conductor (covering 16-28 AWG, e.g., 16AWG corresponds to 52 strands of 0.178mm wire), insulated with silicone rubber—with insulation thickness 0.50-1.70mm and finished diameter 1.50-4.90mm across different voltage levels; its conductor resistance at 20℃ is 14.00-227.00Ω/km. It is mainly used for internal wiring of household appliances, fax machines, scanners, copiers and other equipment, and is packaged in 1000 ft/roll.

1、Product Overview

UL 3239 Silicone Rubber High Pressure Wire is a specialized high-voltage connection cable designed for high-voltage applications. It features a high-temperature resistant silicone insulation layer and a conductor made of bare or tinned copper, providing excellent heat resistance, voltage tolerance, and flame retardancy. Compliant with international safety certification standards, it ensures stable power transmission in various high-voltage equipment.

2、Core Performance Parameters

· Rated Temperature: 200℃ – maintains stable performance in continuous high-temperature environments without degradation of insulation properties.

· Rated Voltage: 3KV, 6KV, 10KV, 20KV, 30KV – suitable for different levels of high-voltage power supply requirements.

· Flammability Rating: Passes UL VW-1 and CSA FT1 vertical flame tests, providing excellent flame retardancy to slow fire spread.

· Compliance Standards: Meets UL 758, UL 1581, ensuring reliable safety and quality.

3、Structural Features

1. Conductor: Constructed from stranded or solid bare/tinned copper, delivering excellent conductivity and oxidation resistance, with flexibility to fit diverse wiring spaces.

2. Insulation Layer: Made of silicone rubber, which offers superior heat resistance, weather resistance, and electrical insulation strength compared to standard XLPE insulation, resisting aging and cracking over long-term use.

4、Applications

Widely used in internal wiring for various high-voltage equipment, including:

· Internal high-voltage power supply lines in household appliances

· High-voltage module connections in office equipment such as fax machines, scanners, and copiers

· Internal wiring for industrial high-voltage testing instruments

5、Specification Reference

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