Solar extension cable 5m 4mm² - red/black for efficient PV connections (set)

The solar extension cable set (5 metres, 4mm²) is the ideal solution for moderate distances within a photovoltaic installation. If you need to bridge distances between your solar modules or want to connect to an inverter or charge controller that is nearby – for example on a balcony, a garage roof or in the garden – this set provides a safe and efficient connection.

The set includes two high-quality, double-insulated solar cables: one red cable for the positive terminal (+) and one black cable for the negative terminal (-). Both ends are professionally pre-assembled with MC4-compatible plugs and sockets. Thanks to the compact length of 5 metres and the solid cross-section of 4mm², this set is technically perfectly suited for almost all common PV applications (balcony power plants, off-grid systems, roof systems).

Highlights at a glance

• Optimum range: With a length of 5 metres, ideal for connecting modules in one string or connecting microinverters at moderate distances.
• Plug & play installation: The cables are pre-assembled on both sides with MC4-compatible connectors, so no special tools are required for crimping.
• Safe identification: The colour coding in red (+) and black (-) makes installation easier and effectively prevents incorrect polarity.
• Weatherproof & durable: The special cross-linked polyolefin jacket is UV-resistant, ozone-resistant and withstands extreme temperatures from -40°C to +90°C.
• IP67 protection class: The plugged connections are absolutely dust-tight and protected against splashing water and rain.
• High-quality conductor: Tinned electrolytic copper ensures excellent corrosion resistance and permanently high conductivity.

Areas of application

This 5-metre extension is designed for a wide range of use scenarios:

• Balcony power plants
  • Perfect for bridging the distance between the solar modules and the inverter when it is mounted slightly offset.
• String wiring
  • Bridging gaps between module arrays on pitched roofs or flat roof elevations.
• Motorhomes & camping
  • Connecting solar modules to the charge controller so the vehicle can be parked in the shade while the panels are in the sun.

Installation & safety instructions

• Minimal voltage drop
  • At 5 metres in length, the voltage drop is negligibly low. For both 12V/24V off-grid systems and high-voltage systems, this cross-section at this length is technically optimally dimensioned.
• Strain relief
  • Secure the cables to the mounting frame with UV-resistant cable ties. Avoid mechanical strain on the plug connections and the module connection boxes.
• Correct latching
  • When plugging them together, make sure the MC4 connectors audibly engage. Only then will the connection be permanently waterproof and safe from arcs.

Features

FAQs about the solar extension cable 5m

Is 4mm² sufficient for my 800W balcony power plant?

Yes, absolutely. With a length of 5 metres and a typical current of approx. 10-13 amps there are practically no measurable power losses. 4mm² is the industry standard here and perfectly sufficient.

Can I leave these cables outdoors?

Yes, that is what they are designed for. The cables are certified to common PV standards. They are resistant to ammonia, ozone and UV radiation and can be used outdoors for decades.

Do the connectors fit modules from all well-known brands?