1 Technical Specifications
| General Information | |
| Product Name | Solar Extension Cable with MC4 Connectors |
| Cable Type | H1Z2Z2-K (EN 50618) / PV1-F (TUV 2PfG 1169) |
| Cross Section | 4 mm² (also available: 2.5 / 6 / 10 mm²) |
| Connector Type | MC4-compatible (male + female, pre-assembled) |
| Standard | EN 50618:2014, IEC 62930, TUV 2PfG 1169 |
| Conductor | |
| Conductor Material | Tinned copper (anti-oxidation, corrosion-resistant) |
| Conductor Type | Class 5 flexible stranded (per IEC 60228 / EN 60228) |
| Conductor Structure | 56 strands × 0.30 mm |
| Max. DC Resistance at 20°C | ≤ 5.09 Ω/km |
| Insulation & Jacket | |
| Insulation Material | XLPO (Cross-linked Polyolefin) — Electron-beam cross-linked |
| Jacket Material | XLPO (Cross-linked Polyolefin) — LSZH, UV-resistant |
| Jacket Colors | Black / Red (standard) |
| Halogen-Free | Yes — per IEC 60754-1 / -2 |
| Low Smoke | Yes — per IEC 61034 |
| Electrical Ratings (Cable) | |
| Rated Voltage (AC) | U₀/U = 0.6/1.0 kV (600/1000V AC) |
| Rated Voltage (DC) | 1500V DC |
| Rated Current | 45 A (single cable in free air at 60°C ambient) |
| Test Voltage | 6.5 kV AC, 50 Hz, 5 minutes |
| Insulation Resistance | ≥ 800 MΩ·km at 20°C |
| Connector Ratings | |
| Connector Model | MC4-compatible solar connector |
| Rated Voltage (Connector) | 1500V DC |
| Rated Current (Connector) | 30 A |
| Contact Material | Tinned copper, copper alloy |
| Ingress Protection | IP68 (mated condition, 1m / 24h) |
| Flammability Rating | UL 94 V-0 |
| Contact Resistance | ≤ 0.35 mΩ |
| Locking System | Snap-in locking with release sleeve |
| Temperature & Environmental | |
| Operating Temperature Range | -40°C to +90°C (ambient) |
| Max. Conductor Temperature | +120°C (20,000 hours rated life) |
| Max. Short-Circuit Temperature | +250°C (max 5 seconds) |
| Minimum Bend Radius | 5× outer diameter (fixed) |
| UV Resistance | Per EN 50618 / HD 605 |
| Flame Performance | Non-propagation — IEC 60332-1 / EN 60332-1 |
| Design Life | 25+ years (at 90°C continuous operation) |
| Packaging & Options | |
| Available Lengths | 1m / 2m / 3m / 5m / 10m / custom lengths |
| Packaging | Individual bag / bulk pack / custom per request |
| MOQ | 100 pcs (sample order negotiable) |
| Lead Time | 5-10 working days (stock: 2-3 days) |
2 Product Overview
The 4mm² solar extension cable with pre-assembled MC4-compatible connectors is a ready-to-install photovoltaic cable assembly designed for module-to-module connections, array extension, and inverter DC input wiring. Each assembly is factory-terminated with TUV-certified MC4-compatible male and female connectors, eliminating field crimping errors and reducing installation time.
The cable core uses H1Z2Z2-K 4mm² photovoltaic cable with a high-purity tinned copper Class 5 stranded conductor (56 × 0.30mm) and double-layer XLPO insulation/jacket system, delivering a maximum DC resistance of just 5.09 Ω/km. The LSZH jacket provides UV resistance, ozone resistance, and low smoke emission in fire conditions — meeting the stringent safety requirements of EN 50618:2014.
The MC4-compatible connectors feature a proven multi-contact system with tinned copper alloy contacts for reliable low-resistance connections (≤0.35 mΩ). The IP68-rated sealing ensures water-tight performance in outdoor environments, while the snap-in locking mechanism provides secure, vibration-resistant connections that can be released with a standard tool for maintenance.
Manufactured to rigorous quality standards under the management of SORIVO, each assembled cable undergoes continuity testing, polarity verification, and connector pull-out testing before shipment. These extension cables are engineered for 25+ years of service life in commercial rooftops, utility-scale solar farms, and off-grid PV systems. For detailed company information, please visit sorivocable.com/about-us/.
3 Key Features
Factory Pre-Terminated
MC4-compatible male and female connectors are factory crimped and tested — no field crimping tools or errors, consistent connection quality every time.
Custom Length Available
Available from 0.3m to 20m+ in any increment, allowing precise sizing for array layouts without excess cable looping.
IP68 Waterproof Rating
Mated connectors achieve IP68 ingress protection (1m depth, 24h), providing reliable outdoor performance in rain, humidity, and wash-down environments.
TUV Certified Cable + Connectors
Both the H1Z2Z2-K cable (EN 50618) and MC4-compatible connectors are individually TUV certified for full system compliance.
1500V DC System Rating
Rated for 1500V DC systems, compatible with modern high-voltage PV architectures with extended string lengths.
Low Contact Resistance
Tinned copper alloy contacts with ≤0.35 mΩ contact resistance minimize connection losses and heat generation at rated current.
Tool-Release Locking
Snap-in locking mechanism with standard MC4 release tool compatibility ensures secure connections that are still serviceable when needed.
Dual Polarity Options
Available with black jacket for DC- and red jacket for DC+ polarity identification, simplifying installation and system verification.
4 Applications
These pre-terminated extension cables are used in PV installations wherever quick, reliable connections are needed: