Highly Flexible Silicone Hook-Up Wire 300/300 V

This highly flexible 300/300 V silicone hook-up wire uses ultra-fine tinned copper strands for internal connections requiring greater flexibility than conventional Class 5 wiring. It maintains excellent flexibility at low temperatures while providing continuous heat resistance up to +180°C.

Key Highlights

300/300 V rated · Ultra-fine 0.05 mm and 0.07 mm copper strands · Highly flexible construction · Minimum bending radius of 5 × diameter · Heat resistant up to +180°C · Short-time temperature up to +250°C · Flexible at low temperatures · Halogen-free · PFAS-free · Flame-retardant and self-extinguishing · Multiple insulation colors · Very good weather resistance · RoHS compliant

Application
Construction
Technical Data
Dimensions
Packaging

Designed for highly flexible internal wiring in equipment exposed to elevated or changing temperatures.

Typical applications include:

Heating appliances and electric heaters
Lamps and industrial lighting
Switchboards and control panels
Electric motors and drive technology
Industrial ovens and thermal equipment
Steelworks, smelters and hot-rolling mills
Textile machinery
Electrical equipment requiring flexible internal connections

This product is intended for flexible internal wiring and assembly. Suitability for continuous drag-chain movement should be verified separately.

Conductor: Highly flexible, ultra-fine tinned copper strands
Available individual wire diameters: 0.05 mm and 0.07 mm, depending on conductor size
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 300/300 V
Test voltage: 2,000 V
Minimum bending radius: 5 × wire diameter
Temperature range, fixed installation: −40°C to +180°C
Temperature range, flexible application: −25°C to +180°C
Maximum short-time temperature: +250°C
Radiation resistance: 2 × 10⁷ cJ/kg
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
Chemical resistance: Dependent on the chemical, concentration and operating temperature
Weather resistance: Very good
PFAS status: PFAS-free
Compliance: RoHS

Cross Section	Largest Single Wire Ø	Approx. Outer Ø	Copper Weight	Approx. Wire Weight
0.25 mm²	0.05 mm	1.9 mm	2.4 kg/km	6 kg/km
0.50 mm²	0.05 mm	2.2 mm	4.8 kg/km	9 kg/km
0.50 mm²	0.07 mm	2.2 mm	4.8 kg/km	9 kg/km
0.75 mm²	0.05 mm	2.4 mm	7.2 kg/km	12 kg/km
0.75 mm²	0.07 mm	2.5 mm	7.2 kg/km	13 kg/km
1.00 mm²	0.05 mm	2.7 mm	9.6 kg/km	15 kg/km
1.00 mm²	0.07 mm	2.7 mm	9.6 kg/km	15 kg/km
1.50 mm²	0.07 mm	3.3 mm	14.4 kg/km	22 kg/km
2.50 mm²	0.07 mm	4.0 mm	24.0 kg/km	35 kg/km

Outer diameter tolerance: ±10%
Other conductor sizes, strand constructions and insulation colors 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