Surge protection is essential for every rooftop solar setup – but it’s often an afterthought in the design process.
Weidmüller’s PV Inline aims to change that. Compact, easy to install, and purpose-built for modern solar systems, it makes protecting your system simple from the start.
Rather than sticking with the bulky, hard-to-fit surge protection devices of the past, Weidmüller has reimagined the whole approach – designing a smarter, more streamlined solution that fits right in.
The PV Inline integrates overvoltage protection directly into cable routes or module mounts, minimising space requirements while enhancing system reliability.
A revolution in rooftop installation
According to Weidmüller, the PV Inline offers one of the most compact footprints on the market.
It fits seamlessly into standard 60×40mm cable ducts or mounts directly behind PV modules.
For systems installed on rooftops with limited access or complex layouts, this space optimisation can be the difference between a streamlined install and a drawn-out one.
But it’s not just about size.
The PV Inline is engineered for flexibility.
Universal mounting brackets allow it to be installed on walls, rails, ducts, or racking systems using UV-stable cable ties.
For projects with longer cable runs – where inverters sit 10 metres or more from the array—the unit can be strategically placed to maintain protection across the string.
Plug-and-play protection
Installing surge protection shouldn’t slow you down – but with traditional devices, it often does. They usually need to be opened up and wired on-site, adding time and complexity to the job.
PV Inline keeps things simple. Its sealed, plug-and-play design comes ready to install straight out of the box. No need for extra tools, no fiddly wiring – just connect using the pre-fitted Stäubli MC4 connectors and you’re done.
Available in single or dual MPP versions, PV Inline delivers robust protection with type I+II surge capability and can handle up to 39 amps per MPP.
PV Inline is built with flexibility in mind. The compact earth terminals are designed to handle conductor sizes from 6 to 50mm² – so users get high current capacity without eating up valuable space.
That kind of flexibility makes PV Inline a great fit for both home and commercial installs, especially for integrators working across a mix of sites with different setup needs.
Engineered for performance
By focusing on both physical and operational integration, Weidmüller is aiming to streamline not just how rooftop solar systems are installed, but how they operate over time.
The PV Inline’s internal protection system diverts overvoltages from lightning or grid disturbances safely to earth, helping extend equipment lifespan and reduce unscheduled maintenance.
It’s a detail that matters, particularly in regions where weather events or inconsistent grid infrastructure can pose hidden risks to rooftop assets.
As more buildings take on the role of distributed energy producers, systems like the PV Inline highlight how small components – when designed well – can have a large impact on long-term project outcomes.
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