Filter and sort
What are solar panel accessories?
They are specific components and consumables for wiring and mounting PV modules: MC4/compatible connectors, low voltage drop solar cable, mid/end clamps, cable glands, cable entries, and sealing plugs. Their function is to ensure a safe, watertight, and durable connection, preventing overheating, losses, and premature failures.
Advantages
- Electrical safety: firm contacts, low resistance, and proper IP protection.
- Durability: materials resistant to UV, ozone, humidity, and extreme temperatures.
- Efficiency: lower voltage drop thanks to correct cable cross-section and quality crimps.
- Professional installation: accessories and tools that speed up assembly and maintenance.
Limitations
- Connectors must be identical and compatible (brand/model) to maintain watertightness and contact.
- Poor crimping or mixing brands can cause hot-spots and losses.
Applications
- Series/parallel connection of modules on roof or ground.
- Roof penetrations and orderly routing to the inverter/MPPT.
- Mechanical mounting of the module and management of rear cabling.
How to choose
- Connectors: select MC4/compatible from the same manufacturer as the modules or use certified kits.
- Solar cable: 4/6 mm² for residential; size the cross-section according to string length and current.
- Mounting: mid and end clamps compatible with the module frame and manufacturer’s torque specification.
- Sealing: IP65–IP68 cable glands/entries for box/roof penetrations.
- Labeling: UV marking for polarities and strings (facilitates O&M).
Typical specifications (indicative)
| Connectors | MC4/compatible, 1000–1500 V DC, IP67–IP68, range 2.5–10 mm² |
| Solar cable | EN/IEC 62930, -40 °C to +90 °C, 1.5 kV DC, double insulation |
| Clamps | Mid/end for frame thickness (e.g. 30–40 mm), stainless steel/anodized Al |
| Cable glands | PP/PA or metal, IP65–IP68, metric threads (M16–M25) with gasket |
| Branch connectors | Y/T connectors, limited by string current (Isc·1.25) |
| Tools | Specific MC4 crimping tool, locking wrenches, calibrated wire stripper |
Size for Voc at minimum temperature and Isc with safety factor. Respect torque specifications and bending radii.
Best practices
- Use male-female connectors of the same series and certified crimping tool.
- Route cabling with UV-resistant clamps; avoid abrasion and unnecessary loops.
- Seal roof penetrations with cable glands and compatible sealants.
- Check polarities and perform insulation/continuity tests before energizing.
Comparisons and related collections
To choose modules, visit Monocrystalline Panels or Bifacial. If your roof has shading, add Optimizers. For bulk purchases, consider Packs and Pallets.
With Solar Panel Accessories you achieve reliable connections, minimal losses, and assembly in accordance with best practices, which is key for the long-term safety and performance of your installation.
