Heat-Resistant Silicone Wire 1.8/3 kV

This 1.8/3 kV silicone-insulated wire is engineered for medium-voltage power connections in industrial systems exposed to elevated temperatures. It combines a Class 5 flexible tinned copper conductor with heat-resistant, halogen-free silicone insulation for reliable installation in furnaces, railway equipment, battery systems and energy-storage applications.

Key Highlights

1.8/3 kV rated · 6,500 V test voltage · Cross sections from 1.50 to 300 mm² · Class 5 flexible tinned copper conductor · Heat resistant up to +180°C · Flexible at low temperatures · Suitable for batteries and energy storage · Halogen-free · PFAS-free · Flame-retardant and self-extinguishing · Very good weather resistance · Optional UL-recognized version · RoHS compliant

Application
Construction
Technical Data
Dimensions
Packaging

Designed for medium-voltage connections and internal wiring in high-temperature industrial equipment.

Typical applications include:

Switchboards and power distribution systems
Industrial ovens and furnaces
Textile machinery
Railway equipment
Battery systems
Energy-storage installations
High-temperature power equipment
Industrial electrical connections

Conductor: Class 5 flexible tinned copper strands according to IEC 60228 and VDE 0295
Insulation: EI2 silicone compound according to EN 50363-1 and VDE 0207-363-1
Available insulation colors: Green-yellow, blue, black, brown, grey, white, reddish brown and red

Nominal voltage: U₀/U 1.8/3 kV
Test voltage: 6,500 V
Current-carrying capacity: According to VDE 0298-4
Minimum bending radius: 7.5 × wire diameter
Temperature range, fixed installation: −40°C to +180°C
Temperature range, flexible application: −25°C to +180°C
Halogen-free: IEC 60754-1 and VDE 0482-754-1
Flame retardant and self-extinguishing: IEC 60332-1-2 and VDE 0482-332-1-2
Combustion gas corrosiveness: No development of corrosive combustion gases according to IEC 60754-2 and VDE 0482-754-2
Weather resistance: Very good
Optional approval: UL-recognized construction available on request
PFAS status: PFAS-free
Compliance: RoHS

Cross Section	Largest Single Wire Ø	Approx. Outer Ø	Copper Weight	Approx. Wire Weight
1.50 mm²	0.26 mm	4.2 mm	14.4 kg/km	28 kg/km
2.50 mm²	0.26 mm	4.6 mm	24.0 kg/km	38 kg/km
4.00 mm²	0.31 mm	5.2 mm	38.4 kg/km	54 kg/km
6.00 mm²	0.31 mm	5.7 mm	57.6 kg/km	73 kg/km
10.00 mm²	0.41 mm	7.3 mm	96.0 kg/km	122 kg/km
16.00 mm²	0.41 mm	8.7 mm	153.6 kg/km	181 kg/km
25.00 mm²	0.41 mm	10.7 mm	240.0 kg/km	278 kg/km
35.00 mm²	0.41 mm	12.1 mm	336.0 kg/km	381 kg/km
50.00 mm²	0.41 mm	13.3 mm	480.0 kg/km	531 kg/km
70.00 mm²	0.41 mm	15.6 mm	672.0 kg/km	709 kg/km
95.00 mm²	0.51 mm	18.5 mm	912.0 kg/km	978 kg/km
120.00 mm²	0.51 mm	20.4 mm	1,152 kg/km	1,194 kg/km
150.00 mm²	0.51 mm	21.9 mm	1,440 kg/km	1,472 kg/km
185.00 mm²	0.51 mm	24.0 mm	1,776 kg/km	1,788 kg/km
240.00 mm²	0.51 mm	27.7 mm	2,304 kg/km	2,400 kg/km
300.00 mm²	0.51 mm	30.8 mm	2,880 kg/km	2,988 kg/km

Outer diameter tolerance: ±10%
Other conductor sizes, insulation colors and customized constructions are available on request.

hulk packing

About Hulk Electric

THE FACTORY
BEHIND EVERY METER

Founded in 2007 in Foshan, Guangdong, Hulk Electric has grown from a regional producer into a globally recognised manufacturer of customised industrial cable solutions. Our 10,000㎡ facility runs on Toyota Production System lean principles, operated by 150+ skilled professionals producing over 300,000 metres every month.

Every cable you see on this page — including the HK-TRVV series — is engineered, extruded, tested, and shipped from that single facility. No trading company sits between you and the extrusion line.

20+Years Manufacturing

30+Countries Served

10K㎡Factory Floor

35+Certifications

About Our Factory Talk to an Engineer

Source Factory

Direct manufacturer — no middlemen, no markups. You deal with the engineers who run the line.

Deep Customization

Conductor, shielding, jacket compound, colour coding, certification — built to your exact spec.

7-Day Sampling

Rapid samples for new specifications. 15-day lead time on standard production orders.

Global Compliance

35+ certifications covering UL, CE, TÜV, IEC, RoHS and REACH for every major market.

Common Questions

BEFORE YOU ORDER

For stocked configurations listed in the ordering table, MOQ is 100 metres per specification. Custom configurations — non-standard core counts, jacket colours, or special compounds — carry a 500 metre MOQ. Samples of 5–10 metres are available free of charge for qualification testing.

Use shielded (P or PP suffix) whenever the cable runs alongside servo drives, VFDs, or inverters, or when carrying encoder, sensor, or analogue signals. Unshielded is suitable for pure power distribution and simple on/off control lines. If in doubt, our engineering team can review your cabinet layout and advise — this is included with any quotation.

Yes. Send us the existing part number or a sample and we will produce a cross-reference specification with matching electrical, mechanical, and dimensional characteristics. Most cross-references are turned around within 3 working days, with a physical sample following within 7 days.

Standard shipments include the CE Declaration of Conformity, RoHS and REACH statements, and the batch test report. UL Recognition (UL 2464 / UL 20549) is available on request for North American projects — specify this at the quotation stage as it affects the material specification.

Standard configurations ship in 15 working days from order confirmation. Custom-engineered specifications typically require 20–25 working days, depending on compound availability. Rapid sampling for new specifications is 7 days. We will confirm the exact date in writing with your order acknowledgement.

Get a Quotation

SEND US YOUR
SPECIFICATION

Tell us your core count, cross-section, and application — our engineering team will confirm the right configuration and send pricing within one working day.

Reply within 1 working day

Free samples for qualification

Cross-reference from any brand

Direct factory pricing — no middlemen