Description
OBO V25-B+C 3+NPE – Combination Lightning Current and Surge Arrester
Product Overview
The OBO V25-B+C 3+NPE is a Type 1+2 combination lightning current and surge arrester designed to protect low-voltage electrical installations against transient overvoltages caused by lightning currents and switching events.
This three-pole + NPE version is designed for three-phase electrical systems and provides protection between the three phases, neutral, and protective earth. It is universally suitable for TN-S and TT systems and is designed for installation in standard electrical distribution boards.
The device is supplied as a complete, pre-assembled unit consisting of the arrester module and base, making it ready for connection. It features a pluggable arrester with a dynamic disconnection device, optical function indication, and an encapsulated, non-blowing zinc oxide varistor design.
Key Features
- Manufacturer: OBO Bettermann
- Model: V25-B+C 3+NPE
- Article Number: 5094463
- EAN: 4012195239864
- Product Type: Combination Lightning Current and Surge Arrester
- Protection Type: Type 1 + Type 2
- Pole Configuration: 3+N/PE
- Nominal Voltage: 230 V AC
- Maximum Continuous Operating Voltage: 280 V AC
- Lightning Impulse Current: 7 kA (10/350 μs)
- Voltage Protection Level: < 0.9 kV
- Protection Rating: IP20
- Mounting: DIN-rail / standard distribution housing
- Status Indication: Optical
- Technology: Zinc oxide varistor
- Suitable Network Systems: TN-S and TT
- Operating Temperature: -40 °C to +80 °C
Type 1 + Type 2 Surge Protection
The V25-B+C 3+NPE combines Type 1 and Type 2 surge protection in a single device.
Type 1 protection is intended for handling high-energy lightning-related impulses, while Type 2 protection provides additional protection against transient overvoltages occurring within electrical installations.
The OBO V25 series is classified as a Type 1+2 combination arrester according to EN 61643-11, making it suitable for installations where both lightning current and surge voltage protection are required.
Three-Phase + NPE Protection
The 3+NPE configuration is designed specifically for three-phase power distribution systems.
The device provides protection across the three phases together with the neutral/protective-earth path, making it suitable for three-phase electrical installations and distribution systems.
The manufacturer specifies compatibility with TN-S and TT network systems.
High-Energy Lightning Protection
The V25-B+C 3+NPE has a specified lightning impulse current of 7 kA using the 10/350 μs waveform.
The 10/350 μs waveform is associated with lightning-current testing and allows the device to address high-energy transient events at the entrance of an electrical installation.
The product is designed for LPZ 0→2 applications, supporting protection concepts where electrical installations transition from an exposed lightning environment into protected zones.
Low Voltage Protection Level
The OBO V25-B+C 3+NPE provides a specified voltage protection level below 0.9 kV.
This allows the arrester to limit transient overvoltages and reduce the stress placed on downstream electrical equipment connected to the protected distribution system.
Encapsulated Zinc Oxide Varistor Technology
The device uses an encapsulated zinc oxide varistor arrester.
Its non-blowing construction is designed for installation inside standard distribution housings, providing a compact solution for electrical panels where controlled surge protection and space-efficient installation are required.
Plug-In Design and Dynamic Disconnection
The V25-B+C 3+NPE uses a pluggable arrester module with a dynamic cut-off/disconnection device.
This design allows the protection module to be integrated with its base while providing a defined disconnection mechanism in the event of an arrester overload.
The unit is supplied pre-assembled with its base and is ready for connection.
Optical Function Indicator
An optical function indicator is integrated into the device to provide a visual indication of the arrester’s operating condition.
This makes routine inspection easier for installers and maintenance personnel without requiring additional monitoring equipment.
Compact Distribution-Board Installation
The V25-B+C 3+NPE is designed for use in standard distributor housings.
Its compact construction makes it suitable for integration into electrical distribution boards in residential, commercial, and industrial installations.
