PV Surge Protection & DC Disconnect Switch 1000V – 1-in-1-out

This high-performance surge protection device with integrated DC disconnect switch is specially designed for photovoltaic systems and reliably protects your solar system from harmful voltage spikes, lightning currents, and electrical faults. By combining several protection mechanisms, your PV system receives comprehensive protection.

Whether on the roof, in open fields, or on outbuildings – thanks to the weatherproof housing (IP65) and UV-resistant materials, use under demanding environmental conditions is no problem. The transparent cover allows for quick visual inspection without opening the housing.

The integrated DC disconnect switch allows for safe disconnection of the string for maintenance, service, or in the event of a fault. In addition, the surge protection is designed to allow the use of replaceable modules, which simplifies maintenance and reduces operating costs.

Thanks to factory wiring and plug-and-play configuration, complex manual cabling is eliminated, minimizing time and potential for error. With the prepared cable connections, the system can be installed immediately.

This system is ideally suited for grid-connected as well as off-grid PV systems and finds wide application in residential systems, garden houses, garages, or balcony power plants with separate protection.

Technical Features & Functions

• Designed for **1 string** (1 input / 1 output)
• Maximum operating voltage: **1000 V DC**
• Integrated circuit breaker (32 A, DC)
• Surge arrester (Type I/II) with modular, replaceable elements
• Protection against: overvoltage, overcurrent, overload, lightning, short circuit
• Housing material: ABS + PC, flame-retardant, UV-resistant
• Protection class: **IP65** (dust- and water-tight) with weatherproof construction
• Transparent cover for status monitoring without opening
• Factory pre-wired for plus/minus; integrated strain relief
• Cable glands included in the scope of delivery
• Grounding connection / equipotential bonding provided in the housing

Applications & Use Cases

This surge protection / connection box is ideally suited for PV projects with a single string. It can be used in both grid-connected solar power systems and off-grid systems. Typical applications include:

• Small residential buildings, garages, and garden houses
• Balcony power plants (with external mounting of the protection device)
• Individual agricultural applications (e.g., pumps)
• Camping, RVs, and boat installations
• Photovoltaic systems in outdoor areas with direct weather exposure

Advantages & Highlights

Safety & Reliability: By combining surge protection, disconnect switch, and fuse, risks from lightning currents, voltage spikes, and overload are significantly minimized.

Easy Installation: Plug-and-play concept with factory wiring saves installation time and reduces sources of error. The transparent cover allows for quick visual inspections.

Maintenance-friendly: Replaceable protection modules reduce maintenance costs in the long term. In the event of a defect, only the affected module needs to be replaced.

Robust design: Weatherproof, UV-resistant IP65 housing ensures long-lasting protection even in harsh environments.

Flexible use: Universally suitable for many PV systems, ideal for 1-string configurations.

Technical Data (Example Values)

• Operating voltage (Un): 1000 V DC
• Rated current (In): 32 A
• Maximum discharge current (Imax): typ. up to 40 kA
• Protection level (Up): ≤ approx. 2.8 kV (model-dependent)
• Housing material: ABS + PC (flame-retardant, UV-stabilized)
• Protection class: IP65
• Operating temperature range: approx. –20 °C to +55 °C
• Cable ducts / strain relief: included