1 / 5

Product

High-temperature wireUL AWM 3304 / 357310 to 25 kV DC+200 °C Glass Braid

UL AWM 3304 / 3573 Fiberglass-Reinforced Silicone Ignition WireUL 758 Style 3304 / 3573 +200 °C 10–25 kV DC silicone ignition wire with E-glass braid

UL AWM Style 3304 and Style 3573 fiberglass-reinforced high-voltage silicone ignition wire with tinned or nickel-plated copper conductors, extruded HV silicone dielectric, and a varnished E-glass braid for +200 °C burner and oven ignition.

Flame-retardant
Approved
Ozone, UV & moisture
Order designation
UL 3573 16 AWG (25 kV)
Outer Ø ≈
7.10 mm
Wall thickness
2.45 mm
Total weight ≈
70.0 kg/km
Min. bend R (fixed)
43 mm
All sizes (9)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
10 to 25 kV DC
UL 3304 (10 kV) · 3573 (15–25 kV)
Temperature
-60…+200 °C
UL continuous · +250 °C glass peak
Conductor
Sn-Cu / Ni-Cu
22 to 10 AWG stranded copper
Dielectric
Extruded HV VMQ
45 to 95 mil silicone rubber wall
Outer armour
Varnished glass
Abrasion-resistant E-glass braid
Flame rating
UL VW-1 / FT1
Vertical flame retardant pass

Typical values for this cable type, based on UL 758 AWM Style 3304 & Style 3573 — confirmed in the datasheet and quotation for your order.

Application fit

Is UL AWM 3304 / 3573 right for your machine?

Specify UL AWM 3304 / 3573 where high-voltage piezo or transformer ignition leads pass through sharp sheet-metal chassis openings and radiant burner heat up to +200 °C (+250 °C peak).

Furnace, kiln & high-temp zone

Suitable

Outer E-glass fibre braid protects the high-voltage silicone core against radiant heat and hot metal contact in commercial ovens and kilns.

Switchgear & control cabinet wiring

Suitable

Braided fibreglass jacket resists cut-through and chafing against stamped sheet-metal brackets in gas ranges, water heaters, and boilers.

Fixed installation

Suitable

Maintains dielectric integrity even if extreme radiant heat chars the inner elastomer, as the glass braid preserves physical spacing.

Motorised monospiral reel

Not suitable

Designed for fixed appliance and burner electrode harnesses, not dynamic reeling.

Use NSHTÖU for drum reeling
Typical machinesCommercial Ranges & Bakery OvensGas Boilers & Water HeatersInfrared & Radiant BurnersIndustrial Kilns & DryersFuel-Cell & Pilot Igniters

Construction

Layer by layer

UL 758 Style 3304 / 3573 dual-layer build: stranded tinned or 27 % nickel-plated copper conductor, thick-wall HV silicone rubber, and varnished E-glass outer braid.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1High-temperature copper conductorStranded tinned copper (up to +180 °C) or 27 % nickel-plated copper (ASTM B355, +200/+250 °C)Reliable crimp retention for spark electrode pins and faston terminals
2Extruded HV silicone dielectricVoid-free high-voltage silicone rubber (1.14 mm to 2.41 mm radial wall)Withstands 10 kV to 25 kV DC ignition pulses and 20–35 kV spark tests
3E-glass fibre reinforcement braidTightly braided continuous-filament E-glass yarn over silicone corePrevents mechanical cut-through on appliance sheet metal and resists +500 °C radiant heat
4High-temperature saturant finishSilicone-resin or PTFE saturant over E-glass braidMinimises glass fibre fraying during high-speed automated stripping and crimping

UL Style 3304 (10 kV DC)

200 °C, 10 kV DC (3.5 kV AC) silicone + glass braid wire for commercial gas appliances

UL Style 3573 (15–25 kV DC)

200 °C, 15 kV to 25 kV DC heavy-wall silicone + glass braid wire for industrial burner igniters

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on UL 758 AWM Style 3304 & Style 3573. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage (UL 3304)
10,000 V DC / 3,500 V AC rms
Rated voltage (UL 3573)
15,000 V to 25,000 V DC / 10,000 V AC
In-line spark test voltage
20 kV AC (Style 3304) · 35 kV AC (Style 3573)
Dielectric breakdown
≥ 30 kV DC (3304) · ≥ 45 kV DC (3573)

Thermal

UL continuous temperature
-60 °C to +200 °C
Radiant heat peak (glass braid)
Up to +250 °C (nickel-plated copper core)
Cold bend endurance
-60 °C for 4 h without dielectric cracking

Mechanical

Conductor size range
22 AWG to 10 AWG (0.35 to 5.26 mm²)
Silicone insulation wall
1.14 mm (45 mil) to 2.41 mm (95 mil)
Min. bending radius
6 × overall diameter (fixed harness)

Resistance

Flame test
UL VW-1 / CSA FT1 vertical flame pass
Corona & ozone resistance
High resistance to HV corona & ozone
Cut-through & abrasion
Reinforced by saturated E-glass outer braid

Reference standards

UL AWM styles
UL 758 Style 3304 & Style 3573
Conductor specification
ASTM B33 (Sn-Cu) / ASTM B355 (Ni-Cu)
RoHS & REACH
RoHS 3 & REACH compliant

Identification

Standard braid colours
White with red/black tracer, red-brown, black
Surface / tag legend
TEBAOFLEX AWM 3304/3573 200C 10KV-25KV VW-1
Customs tariff (HS)
8544.49

Sizes

9 standard configurations (UL AWM 3304 / 3573)

Engineering dimensions, conductor stranding, mass and electrical ratings for UL AWM 3304 / 3573 per UL 758 AWM Style 3304 & Style 3573.

Dimensions & weights
Order designationCross-section / sizeConductor buildWall ≈
mm		Outer Ø ≈
mm		Metal
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard UL AWM 3304 / 3573 configurations
UL 3304 20 AWG (10 kV)20 AWG (0.52 mm²)19×0.19 mm Ni-Cu1.203.805.221.023
UL 3304 18 AWG (10 kV)18 AWG (0.82 mm²)19×0.235 mm Ni-Cu1.204.108.226.025
UL 3304 16 AWG (10 kV)16 AWG (1.31 mm²)19×0.30 mm Ni-Cu1.254.5013.033.027
UL 3304 14 AWG (10 kV)14 AWG (2.08 mm²)19×0.37 mm Ni-Cu1.305.0020.544.030
UL 3573 18 AWG (15 kV)18 AWG (0.82 mm²)19×0.235 mm Ni-Cu1.855.508.242.033
UL 3573 16 AWG (15 kV)16 AWG (1.31 mm²)19×0.30 mm Ni-Cu1.855.8013.049.035
UL 3573 18 AWG (25 kV)18 AWG (0.82 mm²)19×0.235 mm Ni-Cu2.456.808.262.041
UL 3573 16 AWG (25 kV)16 AWG (1.31 mm²)19×0.30 mm Ni-Cu2.457.1013.070.043
UL 3573 14 AWG (25 kV)14 AWG (2.08 mm²)19×0.37 mm Ni-Cu2.507.6020.584.046
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal engineering values for UL AWM 3304 / 3573 subject to standard manufacturing tolerances per UL 758 AWM Style 3304 & Style 3573.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
Dielectric spark / high-voltage withstand test100 % in-line spark and AC/DC dielectric withstand per UL 758 AWM Style 3304 & Style 3573Every manufactured length
Conductor DC resistance & continuity checkWithin maximum 20 °C resistance limit specified for UL AWM 3304 / 3573Every spool or drum length
Sample tests
Thermal ageing & dimensional verificationWall thickness, concentricity and post-ageing elongation per UL 758 AWM Style 3304 & Style 3573Per production batch
Flame, outgassing or high-temperature enduranceQualified to UL 758 AWM Style 3304 & Style 3573 thermal and environmental performance criteriaType qualification

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

UL 758 AWM Style 3304 & Style 3573CE (2014/35/EU) & RoHS 3 (2015/863/EU) CompliantREACH SVHC & Halogen/Asbestos Compliance Verified

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX E-FILE AWM STYLE 3304/3573 16 AWG 200C 25KV DC VW-1
Delivery form
Precision spools, coils or export wooden drums
Standard lengths
50 m · 100 m · 500 m · 1000 m (or cut harnesses)
MOQ
100 m (stock sizes) · 300–500 m (custom build)
Lead time
2–4 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFUL AWM 3304 / 3573 Fiberglass-Reinforced Silicone Ignition Wire – technical datasheet9 sizes · construction, technical data, approvalsXLSXUL AWM 3304 / 3573 spec data (Excel)All 9 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

Why choose fiberglass-braided UL 3304 / 3573 over unbraided UL 3239 or UL 3257 silicone wire?
Unbraided silicone rubber can be nicked by sharp stamped sheet-metal edges inside commercial ranges, boilers, and furnaces. The silicone-saturated E-glass outer braid on UL 3304 / 3573 adds mechanical cut-through protection and acts as a secondary thermal barrier against radiant burner heat.
Should I specify tinned copper or nickel-plated copper conductors in UL 3304 / 3573?
For continuous operation up to +180 °C, tinned copper is economical and easy to crimp. Where burner box temperatures reach +200 °C continuously or experience +250 °C heat soak after burner shut-off, specify 27 % nickel-plated copper (ASTM B355) to prevent conductor oxidation.
How do you prevent the outer fiberglass braid from fraying when cutting ignition leads?
Our E-glass braid is treated with a high-temperature silicone or fluoropolymer saturant so it cuts cleanly on rotary-blade automatic wire-stripping machines. For extreme vibration, silicone or PTFE end-sleeves can also be fitted over the stripped transition.
What is the difference between UL AWM Style 3304 and Style 3573?
Both are rated +200 °C with extruded silicone insulation and a fiberglass outer braid under UL 758; Style 3304 covers 10 kV DC (3.5 kV AC) applications with a medium wall (~1.2 mm), whereas Style 3573 covers 15 kV to 25 kV DC (10 kV AC) heavy-wall (~1.85–2.5 mm) igniters.

Request a quote

Get an engineering quote for UL AWM 3304 / 3573

Your selection and application details are copied into the enquiry form below.

01Selected sizes

Use + Add next to a size or configuration.

02Reel & motion

Add your operating conditions here to include them in your enquiry.

03Message for our engineers

UL AWM 3304 / 3573 Fiberglass-Reinforced Silicone Ignition Wire

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:
Send via WhatsApp

+250 °C UL 3257 ignition

UL AWM 3257

+250 °C high-voltage silicone ignition wire

View productUnbraided HV DC lead

UL AWM 3239

High-voltage DC silicone lead wire · 3–50 kV DC

View product5–10 mm industrial HV

Silicone High-Voltage Ignition Cable

10–40 kV DC homogeneous silicone ignition cable

View product+450 °C flare igniter

Thermo-Trex Flare Stack Cable

High-temperature flare stack ignition cable · +450 °C

View product
DatasheetRequest a quote