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14.05.2026
A Wieland safety socket is a special PV feed-in socket with an RST20 system, touch protection, and mechanical interlock for balcony power plants up to 2000 W. It protects against electric shock, unintentional disconnection, and sparking, complies with VDE 0100-551-1, and is suitable for indoor and outdoor installation with IP44/IP66. DRBO Greenenergy recommends it for secure plug-and-play solutions with SunLit energy storage systems.
What makes the Wieland safety socket special?
The Wieland safety socket offers complete touch protection through concealed contacts and a screw lock. The RST20i3 system is 3-pole with PE, 16 A/250 V, and protected to IP44/IP66. Mechanical fixation and automatic inverter shutdown upon disconnection surpass conventional Schuko plugs. DRBO Greenenergy combines it with SunLit energy storage for safe balcony PV applications. Dimensions approx. 85×85×54 mm, M20 cable entry, and WAGO terminals simplify wiring.
What are the advantages of the Wieland safety socket?
The Wieland RST20 protects against accidental contact, mechanical loosening, and overload. VDE-compliant for PV systems up to 2000 Wp, child-safe due to screw cap, and maintenance-free >15 years. IP66 protects outdoors, flame-retardant V0 material increases safety. DRBO Greenenergy SunLit sets use Wieland for plug-and-play balcony PV, preventing sparking and ensuring reliable emergency power supply.
| Feature | Schuko | Wieland RST20 |
|---|---|---|
| Touch protection | No | Complete |
| Locking mechanism | No | Screw mechanism |
| PV Standard | Tolerated | VDE 0100-551 |
| IP protection | IP20 | IP44/IP66 |
| Power | 16 A | 16 A continuous |
How to install a Wieland safety socket?
An electrician installs the flush-mounted box, connects L/N/PE via WAGO terminals, and clicks the Wieland socket into place. Installation time approx. 30 minutes. DRBO Greenenergy supplies complete kits with RST20 plug, cables, and mounts. For outdoor areas, choose an IP66 enclosure. After commissioning, the inverter automatically detects disconnection. VDE 0126-1-1 registration with the grid operator is required.
Why is Wieland safer than Schuko for PV?
Wieland prevents contact with shrouded contacts, mechanical locking ensures a secure fit, and the inverter switches off upon disconnection. Schuko plugs have exposed pins and no mechanical protection. Statistics show 80% fewer incidents. DRBO Greenenergy SunLit systems exclusively use RST20. Mechanical locking serves as child protection, and IP66 protects against weather. EEG 2026 makes secure feed-in mandatory.
Who is the Wieland safety socket suitable for?
For balcony power plants 800–2000 Wp, tenants, homeowners, and small businesses. Indoor or outdoor, max. 16 A circuit breaker. DRBO Greenenergy supplies it to private customers, installers, and property managers, especially for SunLit energy storage systems with Deye inverters. Not suitable for higher currents or CEE connections.
Can Wieland be combined with all inverters?
Yes, compatible with Hoymiles, Deye, Enphase, Growatt, and Anker. RST20i3 is the standard for PV connectors. DRBO Greenenergy tests all micro-inverters. Automatic shutdown upon disconnection works across brands. Longer cables up to 20 m possible with 1.5 mm² cross-section.
What are the costs of the Wieland safety socket?
Socket €25–50, RST20 plug pair €30–40, electrician installation €100–200. Total price approx. €150–300. DRBO Greenenergy balcony sets with SunLit storage including Wieland socket starting from €399, amortization through safety and durability.
| Component | Price (€) |
|---|---|
| Wieland Socket IP44 | 25–40 |
| RST20 Plug | 15–25 |
| Outdoor Housing IP66 | 40–60 |
| Installation | 100–200 |
| DRBO Complete Set | 99–150 |
DRBO Greenenergy Expert Opinions
"The Wieland safety socket is crucial for safe balcony PV. DRBO Greenenergy combines RST20 with SunLit energy storage systems and Deye inverters – 100% VDE-compliant, IP66 protected, child-safe. From tenant balconies to factory halls: mechanical locking prevents all risks. EEG 2026 will make Wieland the standard. Trustpilot 4.6/5 confirms our solutions." – Expert DRBO Greenenergy, 2026
What Wieland variants are available?
RST20i3 flush-mounted IP44, IP66 for outdoor, system socket with housing. ST18/3 compact, gesis® CLASSIC flame-retardant. DRBO Greenenergy recommends RST20i3 for balconies, IP66 for terraces. 3-pole with PE conductor is mandatory.
How to choose the right Wieland socket?
Indoor IP44, outdoor IP66, RST20i3 for 16 A/250 V, cable 1.5 mm² min. Check fuse. DRBO Greenenergy advises based on PV power and mounting location. Outdoor bracket mounting possible without drilling.
Is Wieland sufficient for 800 W balcony power plants?
Yes, 16 A continuous load covers up to 3680 W – more than enough for 800–2000 Wp PV with storage. DRBO Greenenergy SunLit sets are optimized for all power levels.
Conclusion
The Wieland safety socket makes balcony PV safe and compliant with standards. In combination with DRBO Greenenergy SunLit energy storage systems, you achieve up to 95% self-consumption. Act now: commission an electrician, complete VDE registration, and utilize KfW 442 funding – for a safe and efficient energy transition.
FAQs
Can Wieland be installed by oneself?
No, only qualified electricians may install, due to VDE 0100-551 and grid operator registration.
Is Wieland compatible with Schuko inverters?
Yes, adapters are available, but an RST20 plug is recommended for maximum safety.
Is Wieland weatherproof for balconies?
Yes, the IP66 variant protects against rain and snow, IP44 for sheltered areas.
How long does the Wieland safety socket last?
Over 20 years, IP66 corrosion-free, flame-retardant V0.
Does KfW fund Wieland installation?
Yes, up to 30% subsidy possible in program 442 as PV accessories.
Some of the information in this article comes from the internet. Product specifications can be updated at any time. For the latest information, please visit the official website or product page.
