UL 3135 Silicone Wire 200°C / 600V — Totally Enclosed AWM · CIF HCMC & Surabaya
Bare Silicone Insulation for Protected Internal Wiring Where No Braid Is Required
UL Style 3135 is a single-conductor appliance wiring material (AWM) insulated with extruded silicone rubber — without an outer braid or covering — rated for 200°C continuous operation at 600V AC with a horizontal-flame rating. The style covers conductor sizes from 26 AWG to 12 AWG in solid or stranded construction. Its use designation is specific: internal wiring of appliances where totally enclosed — meaning the wire routing is fully contained within the equipment enclosure, protected from external mechanical contact, UV exposure, and direct environmental exposure. Where the routing passes over metal edges, through conduit entries, or under cable clips, a braided style (UL 3071 or UL 3172) should be specified instead. CableApex supplies UL 3135 wire as a UL Recognized Component — file on record. CIF Ho Chi Minh City and CIF Surabaya, transit 10–14 days.
UL 3135 Specification Summary
- Style Number: UL 3135 (AWM, UL 758)
- Temperature Rating: 200°C continuous
- Voltage Rating: 600V AC
- Flame Rating: Horizontal flame
- Conductor Range: 26 AWG – 12 AWG, solid or stranded
- Insulation: Extruded silicone rubber (SR), 30 mils avg / 27 mils min
- Covering: None (bare silicone surface)
- UL Status: UL Recognized Component — file on record
- Intended Use: Internal wiring of appliances where totally enclosed
Conductor & Dimension Reference
| Gauge (AWG) | Cross-Section (mm²) | Stranding | Ins. Wall (mm) | Nom. OD (mm) | Max. Resistance (Ω/km) |
|---|---|---|---|---|---|
| 26 AWG | 0.13 | 7/0.16 | 0.76 | 1.90 | 145.0 |
| 24 AWG | 0.20 | 7/0.20 | 0.76 | 2.10 | 89.4 |
| 22 AWG | 0.33 | 7/0.25 | 0.76 | 2.30 | 57.6 |
| 20 AWG | 0.52 | 10/0.25 | 0.76 | 2.50 | 36.4 |
| 18 AWG | 0.82 | 16/0.25 | 0.76 | 2.70 | 23.2 |
| 16 AWG | 1.31 | 26/0.25 | 0.76 | 3.00 | 14.6 |
| 14 AWG | 2.08 | 41/0.25 | 0.76 | 3.30 | 8.96 |
| 12 AWG | 3.31 | 65/0.25 | 0.76 | 3.60 | 5.64 |
Applications in Vietnam and Indonesia
The “totally enclosed” designation means UL 3135 is specified wherever the wire runs entirely inside a sealed equipment housing — no exposed routing, no conduit entries, no mechanical contact points. This covers a wide range of Vietnamese and Indonesian manufacturing scenarios:
- Enclosed industrial ovens and dryers (Indonesia — Bekasi / Tangerang / Surabaya): Internal wiring between heating element terminals, thermostats, and control boards inside sealed oven chambers. The 26–12 AWG range lets a single Style cover both fine sensor leads (26–22 AWG) and heating element power connections (16–12 AWG) within one equipment enclosure.
- Household appliances (Vietnam — Bình Dương / Đồng Nai): Rice cookers, electric ovens, food processors, and kettles where internal wiring near the heating element or motor winding operates above 105°C. The wide AWG range covers the full harness — from thermostat sensor leads to power circuit wiring — under one UL Style, simplifying procurement and UL listing documentation.
- Commercial kitchen equipment (Vietnam — Ho Chi Minh City): Enclosed commercial ovens, food warmers, and processing equipment where internal routing reaches 150–180°C at the wire surface during continuous operation. Fine thermocouple leads (26–22 AWG) and main element circuits (14–12 AWG) both covered.
- Totally enclosed motors (Vietnam and Indonesia): Internal winding leads inside sealed motor frames — PTC thermistor sensor leads (26–22 AWG) and main winding-to-terminal connections (16–12 AWG) within the same motor enclosure.
- Enclosed control panels near heat sources: Panel internal wiring where the cabinet is sealed and the ambient temperature inside exceeds 105°C due to proximity to heating equipment.
Complete 200°C Silicone Family — Selection by Covering and AWG
All four Styles below share 200°C silicone rubber insulation at 30 mils wall thickness. The selection depends on whether a braid covering is needed, the voltage requirement, and the conductor range:
| UL Style | Covering | Voltage | AWG Range | When to Specify |
|---|---|---|---|---|
| 3135 (this page) | None (bare silicone) | 600V | 26–12 | Totally enclosed; no abrasion risk; widest AWG range at 600V |
| 3071 | Glass braid (SF-2) | 600V | 18–13 | Abrasion protection needed; coarser power gauges only |
| 3172 | Glass or aramid braid | 600V | 26–18 | Abrasion protection needed; fine signal gauges; aramid option |
| 3122 | Lacquered braid | 300V | 26–16 | Thinner 15 mil wall + lacquered finish; 300V circuits only |
Shipping to Vietnam and Indonesia
CableApex supplies UL 3135 CIF Ho Chi Minh City and CIF Surabaya, transit 10–14 days. MOQ 500 metres per AWG; mixed-AWG orders accepted. Full UL recognition documentation, RoHS Declaration, and REACH SVHC Declaration accompany every order.
UL Recognition
All UL 3135 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.
Related UL Styles for Comparison
- UL 3071 Silicone + Glass Braid Wire — 200°C / 600V / 18–13 AWG
- UL 3172 Silicone + Glass/Aramid Braid — 200°C / 600V / 26–18 AWG
- UL 3122 Silicone + Lacquered Braid — 200°C / 300V
- All AWM Wire Styles
Order Information
Specify AWG (26–12), conductor type (solid or stranded), colour, and quantity. MOQ 500 m per AWG. Mixed-AWG orders accepted. Sample from 10 m. Quotations returned within 12 hours.
