High Voltage Unshielded Silicone Cable 40kVDC 4mm² – TC 56/0.30 Tear Resistant Red Silicone Insulation
Silicone Unshielded Cable 40kVDC 4mm² – TC Tinned Copper Conductor 56/0.30 IEC 60228 Class 5, Tear Resistant Silicone Rubber Insulation Red, 12mm Outer Diameter
This silicone unshielded cable is engineered for 40kVDC applications requiring reliable high voltage insulation in a flexible, unshielded construction. The TC tinned copper conductor features 56/0.30 fine-strand configuration per IEC 60228 Class 5, providing exceptional flexibility for installation while ensuring corrosion resistance. The insulation consists of tear resistant silicone rubber compound in high-visibility red, formulated to maintain dielectric integrity at 40kVDC while offering outstanding flexibility across a wide temperature range. With 12mm outer diameter, this cable delivers robust high voltage performance in a compact, flexible package ideal for applications where shielding is not required.
Key Features & Technical Advantages
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40kVDC rated with tear resistant red silicone insulation
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TC tinned copper 56/0.30 Class 5 fine-strand conductor
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Exceptional flexibility for tight installations
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High-visibility red for safety identification
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12mm compact outer diameter
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Tear resistant formulation extends service life
Specifications & Construction
| Parameter | Details |
|---|---|
| Voltage Rating | 40kVDC |
| Conductor | TC tinned copper 56/0.30 |
| Conductor Class | IEC 60228 Class 5 |
| Insulation | Tear resistant SiR rubber, red |
| Outer Diameter | 12mm |
| Temperature Range | Wide temperature silicone performance |
Why Choose Our 40kVDC Silicone Unshielded Cable
We specialize in high voltage silicone cable technology for demanding applications. Our 40kVDC design combines tear resistant silicone insulation with Class 5 fine-strand conductor for maximum flexibility and reliability. The 56/0.30 configuration ensures easy routing in complex installations, while the 12mm insulation thickness provides dependable 40kVDC withstand capability. Red silicone enables immediate high voltage identification for safety. As a specialized manufacturer, we control all production stages, offering custom lengths and technical support for your specific high voltage requirements.
Typical Applications – Solving Critical Industrial Challenges
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Cathodic Protection Systems: Provides reliable DC connections for pipeline and storage tank corrosion prevention systems operating at 40kVDC
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High Voltage Power Supplies: Delivers flexible connections between power supplies and loads in industrial and laboratory equipment
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Electrostatic Coating Equipment: Ensures dependable high voltage delivery to paint and powder coating applicators
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Medical Imaging Devices: Provides high voltage connections for X-ray and other medical equipment where shielding is not required
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Research Laboratory Instruments: Delivers clean DC power to experimental setups requiring flexible high voltage cabling
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Ionization Systems: Supplies high voltage to air and water treatment ionization equipment
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Particle Detection Equipment: Provides bias voltage connections for radiation detectors and scientific instruments
- Request Sample & Compliance Data - Evaluate the cable in your application
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Download Technical Specifications - Get complete electrical performance data
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Contact Our Engineering Team - Discuss your electronic wiring requirements
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FAQ
Q1: Why choose unshielded cable for 40kVDC applications?
A: Unshielded cable is ideal when EMI protection is not required, offering reduced weight, smaller diameter, and lower cost while maintaining full high voltage insulation capability.
Q2: What advantages does Class 5 stranding provide?
A: IEC 60228 Class 5 fine-strand construction provides exceptional flexibility, making the cable easier to route in tight spaces and more resistant to fatigue from vibration.
Q3: Why is the insulation colored red?
A: Red is an internationally recognized color for high voltage cables, ensuring immediate visual identification of 40kVDC circuits for safety during installation and maintenance.
Q4: What temperature range can this cable withstand?
A: Silicone insulation maintains flexibility and dielectric properties across a wide temperature range from extreme cold to high heat. Contact our technical team for specific temperature ratings.
Q5: Is this cable suitable for outdoor use?
A: Silicone insulation offers excellent UV and weather resistance, making this cable suitable for outdoor installation. For direct burial applications, please consult our engineering team.

