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Glass-free construction
eArc modules use crystalline-silicon cells with composite front materials instead of conventional module glass.
Sunman eArc · glass-free solar
Sunman eArc lightweight solar panels
Compare glass-free, lightweight crystalline-silicon panels for caravans, motorhomes, boats, vehicles and other installations where conventional framed glass modules may not suit the available surface or weight.
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current Sunman products
Glass-free eArc construction using lightweight composite materials
Local technical help with sizing, mounting and controller matching
Why eArc is different
Solar for weight- and shape-sensitive surfaces
Sunman replaces conventional module glass with proprietary lightweight composite materials. Exact weight, thickness, flexibility, electrical ratings and mounting limits vary by model.
Low weight and profile
Compare exact dimensions and mass where roof loading, panel height or handling are important to the installation.
Model-specific mounting
Surface support, permitted bend, adhesive method, cable exit and thermal requirements must follow the selected panel instructions.
Complete current range
Shop all Sunman eArc panels
Use the catalogue filters for wattage, dimensions, availability and other verified attributes. Confirm the exact datasheet, mounting instructions, controller compatibility and application warranty before installation.
Sunman 175W eArc Flexible Solar Panel | Junction Box Underneath
Regular price$359.00
Availability: In Stock
Customer stories
Five-star support, from planning to after-sales
A rotating five-star selection from around 150 Google reviews for Solar 4 RVs equipment, advice and ongoing support.
5.0 out of 5 · Selected five-star Google reviews
Read all Google reviews
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Absolutely stellar service from Cameron at Solar 4 RVs. Initially had him quote up a solar system for my campervan back in June 2024 and then when I was ready to purchase in November 2024 he was able to give me the best prices for every product and so I went ahead with the order.
Also gave me some tips to commission the system once I installed the products. Stoked on the Victron gear. Thanks guys!
Purchased a 12v/15a battery charger in 2023. Had issues with it today (2025). Called their info number and explained. Instantly agreed to accept it as a warranty issue and dispatched a replacement without any problems. Extremely quick service and item dispatched express courier that same day. Outstanding customer service. Thank you.
Purchased a literal boat load of electronics from them for our vessel. It all works great and they did an amazing job setting up the panel. We have had the gear a few years now and still reach out when we need help. Great customer service!
Before final selection
Size, mount and connect the exact eArc model
Available area and nameplate watts are only the start. Check panel construction, electrical data, surface support, cable exit, mounting method and controller limits together.
Estimate daily solar needs
Start with loads, seasonal conditions and battery voltage before choosing the available panel area and wattage.
Open the solar sizing toolReview lightweight panel mounting
Check surface preparation, support, adhesive method, cable routing and heat-management considerations before installation.
Read the mounting guideCheck current Sunman technical data
Use the exact product datasheet and installation instructions for electrical, mechanical and warranty requirements.
Visit Sunman EnergySystem check
Want the panel and controller checked together?
Send the details below and our off-grid team can help narrow the suitable Sunman model and surrounding solar components.
- Available mounting length, width, curvature, surface and weight limit
- Daily energy target, season, location and expected shade
- Battery voltage, chemistry, capacity and charge-current limit
- Proposed panel quantity, array wiring, controller and cable length
Ask an expert to check it
Final mounting and wiring must follow the exact product instructions and applicable installation requirements.
Selected solar panel guides
Plan the array around the surface and system
Six practical guides covering sizing, construction, specifications, cell technology, panel angle and array wiring.
Camping Solar Panel Sizing Guide 2026
If you are choosing a portable solar panel for camping, the easiest way to get it right is to size it from your daily...
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How to Choose the Best Solar Panels for Your Caravan
Discover how to choose the best solar panels for your caravan. Learn about high-efficiency, durable, cost-effective, easy to install, and flexible solar panels from...
Read guide
How to Read Solar Panel Specifications: Decoding STC, Voc and More
Navigate the complex world of solar panel specifications with our comprehensive guide. Learn about STC, NOCT, and more to choose the right solar panel...
Read guide
Types of Solar Cells for Caravans and RVs
Looking for the perfect solar panel for your caravan? Our guide covers the different types of solar panels available, including monocrystalline, polycrystalline, thin-film /...
Read guide
Flat vs Tilted Solar Panels on a Caravan: Does Tilting Really Improve Efficiency?
Many travellers setting up solar on a caravan, RV, 4WD, or motorhome ask whether tilting roof panels is worth the effort. The idea is...
Read guide
Solar Panel Wiring Guide
SOLAR 4 RVS OFF-GRID, EXTRA LOW VOLTAGE SOLAR PANEL WIRING GUIDE Please read this document in full before commencing installation. To maximise the...
Read guideAbout this range
As featured in ABC News - Now 14% owned by the Clean Energy Finance Corporation.
eArc solar panels are the only lightweight solar panels approved for grid connect on buildings which means they have passed the same testing criteria as traditional solar panels.
Tougher, lighter, thinner and more durable
- Cutting edge technology - glass fibre-reinforced composite polymers similar to aircraft windows
- Light - 175W frameless is 3kg
- Thin - 2mm
- Tough - Hail tested with ice stones of 35mm diameter and 200g mass at 39.5m per sec
- Strong - rated 2400 pascals for wind and 2400 pascals for load
- Durable - 10 year product warranty for building and 5 years for mobile application
- Output - Efficient monocrystalline cells, 25 year performance guarantee
- The only lightweight solar panel with Clean Energy Council (CEC) Accreditation (SMA and SMD Series)
Development of the new waterproof composite polymers and panel structure was accelerated by funding of $3.3M from the Australian Renewable Energy Agency (ARENA) to achieve the same durability as conventional solar panels.
eArc panels have been installed on the world’s first solar powered train in Byron Bay and 812 (235kW) panels have been installed onto the Sydney Maritime Museum’s Heritage Building which could not support heavy glass framed solar panels. To date more than 1MW of eArche capacity has been installed in Australia
eArc has obtained a series of other certifications for reliability, including:
scroll down for sizes and specifications
A robust, lightweight, flexible solar panel that is perfect for caravans, motorhomes, boats, golf carts, trains, buses and other applications.
Edging options:
1) Frameless
No edge on the 2mm panel provides a thin, low profile installation with good flexibility.
2) 5.6mm thin frame
The lightweight black anodized aluminium alloy frame option provides support without thickness (some flex but not bendable).
CLICK HERE for our foldable portable solar panel using eArc
The Sunman eArc panels are used on major projects where reliability is critical and where the weight of rigid panels is not feasible such as the Byron Bay train.
Technical buying questions
Sunman eArc solar panel questions
These are selection principles. The current datasheet, installation manual, warranty and controller instructions for the exact products remain the authority.
What makes a Sunman eArc panel glass-free?
Sunman uses crystalline-silicon solar cells with proprietary lightweight composite materials in place of the conventional front glass used by many rigid modules. Construction, surface layers, weight, thickness and ratings still vary by exact eArc model, so use its current datasheet.
Can every Sunman eArc panel be installed on a curved surface?
No. A lightweight or flexible description does not permit unlimited bending. Check the exact panel minimum bend radius, permitted bending direction, support requirements and installation method. Do not crease, twist or force a panel to match a surface outside its instructions.
Can a Sunman panel be bonded directly to a caravan, boat or vehicle roof?
Only with a mounting method approved for the exact panel and surface. Confirm structural support, surface preparation, adhesive or mechanical attachment, thermal movement, drainage, cable routing, junction-box clearance and future removal. Follow both the panel and adhesive-system instructions.
Does every Sunman panel suit a 12V battery system?
No. Panel voltage is not the same as battery voltage. Use Voc, Vmp, Isc and Imp for the exact panel and proposed series or parallel array. Some compact Sunman models have atypical operating voltages and may require a particular controller or array arrangement.
Should I choose a top or underside junction box?
The junction-box position changes the required cable route, mounting clearance, roof penetration and access. An underside box needs a suitable recess or clearance without loading the box or cable, while a top box remains visible and must be positioned and protected according to the panel instructions.
Can Sunman eArc panels be walked on?
Do not assume a lightweight panel is walkable. Concentrated foot pressure, sharp objects and unsupported areas can damage cells or laminates. Keep panels out of traffic paths unless the exact product and completed supported installation explicitly allow the expected load.
How do I choose a solar controller for Sunman panels?
Calculate the complete array Voc, Vmp, Isc, Imp and power, including cold-temperature voltage and the chosen series or parallel layout. Keep those values within the controller limits and match its battery output, charge current and profile to the battery. Check every relevant datasheet and manual.