UL 5359 Mica + Glass Braid Wire — 200/450°C 600V Thin-Wall AWM for Germany
Thinnest Mica Wall Among 600V Styles — Maximum Compactness for High-Temperature Routing
UL Style 5359 is a single or multi-conductor appliance wiring material (AWM) insulated with mica tape and covered with a glass braid treated with silicone varnish or PTFE finish. Rated for 200°C or 450°C continuous operation at 600V AC with a horizontal-flame rating, the style covers conductor sizes from 30 AWG to 4/0 AWG. Among the four 600V mica AWM styles available, UL 5359 has the thinnest mica tape layer — 16 mils for 30–12 AWG — producing the most compact overall diameter at any given gauge. An optional nickel or nickel-coated copper shield braid, multi-conductor cable assembly (up to 1.500-inch OD), and overall treated glass braid covering are available. CableApex supplies UL 5359 wire as a UL Recognized Component — file on record. CIF Hamburg or Rotterdam, transit 25–30 days.
UL 5359 Specification Summary
- Style Number: UL 5359 (AWM, UL 758)
- Temperature Rating: 200°C or 450°C continuous
- Voltage Rating: 600V AC
- Flame Rating: Horizontal flame
- Conductor Range: 30 AWG – 4/0 AWG (26–8 solid or stranded; larger stranded only)
- Insulation (30–12 AWG): Mica tape 16 mils avg + glass braid 7 mils avg
- Insulation (11–4 AWG): Mica tape 20 mils avg + glass braid 15 mils avg
- Insulation (3–4/0 AWG): Mica tape 25 mils avg + glass braid 20 mils avg
- Optional Shield: 36–30 AWG Type “A” Nickel or 27% min nickel-coated copper
- Optional Assembly: 2+ insulated conductors, max 1.500″ OD, mica glass binder / fiberglass fillers
- Optional Covering: Treated glass braid over assembly
- UL Status: UL Recognized Component — file on record
- Intended Use: Internal wiring where not subjected to repeated flexing and protected from mechanical abuse
Individual Conductor Dimension Reference
| Gauge (AWG) | Cross-Section (mm²) | Mica Wall (mils) | Braid (mils) | Nom. Single-Conductor OD (mm) |
|---|---|---|---|---|
| 24 AWG | 0.20 | 16 | 7 | 1.70 |
| 20 AWG | 0.52 | 16 | 7 | 2.10 |
| 18 AWG | 0.82 | 16 | 7 | 2.40 |
| 16 AWG | 1.31 | 16 | 7 | 2.80 |
| 12 AWG | 3.31 | 16 | 7 | 3.50 |
| 10 AWG | 5.26 | 20 | 15 | 4.60 |
| 8 AWG | 8.37 | 20 | 15 | 5.60 |
Multi-Conductor Assembly Option
Like UL 5107, 5335, and 5476, UL 5359 permits two or more individually insulated conductors to be cabled together into a single assembly with a maximum overall diameter of 1.500 inches (38.1 mm). Mica glass binder and fiberglass fillers maintain conductor positioning; an optional treated glass braid may be applied over the assembly. Typical configurations include:
- 2–3 conductor cables: Thermocouple measurement leads (Type K, J, N) in high-temperature equipment where a bundled cable simplifies routing and ensures consistent thermal exposure across signal conductors.
- 3+1 conductor power cables: Three-phase plus ground for 480V internal distribution inside industrial heat equipment, consolidated into a single routable cable assembly.
- 4–7 conductor instrumentation cables: 4-wire RTD measurements, multi-channel temperature monitoring, and multi-zone control in industrial furnaces.
- 10+ conductor cables: Large-scale multi-channel monitoring in steel mill heat treatment lines, glass production furnaces, and equipment with extensive zone instrumentation.
UL 5359’s thin 16 mil mica wall gives it a diameter advantage in multi-conductor assemblies: more conductors fit within the 1.500-inch OD limit at any given AWG compared with 5107 (25 mil mica) or 5335 (23 mil mica).
UL 5359 vs Related 600V Mica Styles
Four UL AWM styles provide mica insulation at 600V. All four support optional multi-conductor assembly. The selection depends on mica wall thickness, temperature options, and AWG range:
| UL Style | Mica Wall (30–12 AWG) | Temp | AWG Range | Key Characteristic vs UL 5359 |
|---|---|---|---|---|
| 5359 (this page) | 16 mils (thinnest) | 200 / 450°C | 30–4/0 | Most compact OD; dual temp; finest gauge starts at 30 AWG; optional Ni shield |
| 5107 | 25 mils | 200 / 450°C | 26–550 kcmil | Thickest wall — maximum dielectric margin; widest AWG range incl. heavy-gauge |
| 5335 | 23 mils | 450°C only | 22–4/0 | 450°C only (no 200°C option); medium wall |
| 5476 | 17 mils | 450°C only | 30–4/0 | Near-identical to 5359 but 450°C only; optional binder layer between mica and braid |
Frequently Asked Technical Questions
How many conductors fit within the 1.500-inch maximum OD? Depends on individual conductor AWG. For 18 AWG (~2.4 mm OD each), roughly 30–40 conductors fit. For 12 AWG (~3.5 mm OD), roughly 15–20. For heavy 4 AWG conductors, roughly 6–8 maximum. Configurations needing more conductors than one cable can hold are served by parallel cable assemblies.
When is the 200°C rating applied versus 450°C? The individual conductor’s insulation thickness and glass braid specification determine the rating achieved. Both 200°C and 450°C constructions share the same UL 5359 Style number. Specify the required temperature class on the order.
What is the cost structure of a multi-conductor assembly versus individual conductors? A multi-conductor cable typically costs approximately the sum of its individual conductor lengths plus 15–25% for mica glass binder, fillers, and optional overall braid. For projects routing multiple high-temperature circuits through the same path, the multi-conductor assembly usually delivers lower installed cost than running individual conductors despite the higher per-cable material price.
UL Recognition
All UL 5359 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.
Related UL Styles for Comparison
- UL 5107 Mica Wire — 200/450°C 600V Wide-Range AWM (Thickest Wall)
- UL 5335 Mica Wire — 450°C 600V Internal Wiring
- UL 5476 Mica Wire — 450°C 600V with Optional Binder
- All AWM Wire Styles
Order Information
Specify AWG, conductor count (single or multi-conductor assembly), temperature class (200°C or 450°C), shield requirement, overall covering requirement, and quantity. MOQ varies by configuration — multi-conductor assemblies have higher setup cost. CIF Hamburg or Rotterdam, 25–30 days. Quotations returned within 12 hours.
