PFA-Insulated High-Temperature Hook-Up Wire 375 V

This 375 V high-temperature hook-up wire combines a nickel-plated stranded copper conductor with premium PFA insulation. It provides reliable electrical performance at temperatures up to +250°C, together with excellent resistance to chemicals, solvents, oil and extreme low-temperature conditions.

Key Highlights

PFA insulation · Nickel-plated stranded copper · 375 V peak operating voltage · 600 V UL rating · Fixed temperature range from -90°C to +250°C · Limited-time temperature up to +260°C · Excellent chemical resistance · Excellent low-temperature flexibility · Stable dielectric properties · Flame retardant and self-extinguishing · Oil resistant · UL recognized · RoHS compliant

Application
Construction
Technical Data
Dimensions
Packaging

This PFA-insulated hook-up wire is designed for internal wiring in equipment exposed to extreme temperatures, aggressive chemicals or demanding electrical conditions. Its stable dielectric properties also support high-frequency and precision signal applications.

Typical applications include:

Industrial furnaces and heating systems
Kilns, brickworks and heat-treatment equipment
Chemical processing equipment
Laboratory and analytical instruments
High-frequency and broadband equipment
Coaxial and microwave systems
Precision measurement equipment
High-temperature internal appliance wiring

Conductor: Stranded nickel-plated copper

Conductor Standard: ASTM B286

Insulation: PFA compound, type 51YI1 according to VDE 0207-6

Available Insulation Colors: Black, blue, brown, grey, yellow, green, violet, white, orange, red and natural

Cable Type: Single-core stranded hook-up wire without an outer jacket

Maximum Peak Operating Voltage: 375 V

UL Voltage Rating: 600 V

Test Voltage: 2000 V

Minimum Bending Radius for a Single Bend: 0.5 × insulated wire outer diameter

Radiation Resistance: 1 × 10⁶ cJ/kg

Temperature Range for Fixed Installation: -90°C to +250°C

Temperature Range for Flexible Application: -55°C to +250°C

Maximum Temperature for Limited-Time Use: +260°C

Maximum Temperature under UL Rating: +250°C

Flame Performance: Flame retardant and self-extinguishing according to IEC 60332-1-2 and VDE 0482-332-1-2; UL FT2

Oil Resistance: Very good according to UL 758 after 80 days at +80°C

Chemical Resistance: Very good resistance to acids, halogens, bases, chlorinated solvents and organic and inorganic compounds

Reference Approval: UL recognized

Environmental Compliance: RoHS compliant

AWG Size/Stranding	Nominal Strand Diameter (mm)	Approx. Outer Diameter (mm)	Copper Weight (kg/km)	Approx. Wire Weight (kg/km)
AWG 28/7	0.127	0.71	0.9	1.4
AWG 26/7	0.160	0.80	1.4	2.0
AWG 24/7	0.203	0.93	2.2	2.9
AWG 22/7	0.254	1.08	3.4	4.2
AWG 20/7	0.320	1.28	5.4	6.3

Other conductor sizes, insulation colors and customized dimensions 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