Why Choose the Finder 7P.20.9.375.0020 Surge Protection Replacement Module?
The Finder 7P.20.9.375.0020 is a high-performance replacement varistor module for Type 2 surge protection devices (SPDs), designed to protect photovoltaic installations and sensitive electrical equipment against transient overvoltages. As part of the reliable Finder 7P surge protection series, this module provides an efficient and convenient solution for maintaining surge protection in compatible DC electrical systems.
This replaceable varistor cartridge is engineered to absorb and divert transient surge currents caused by lightning-induced overvoltages and electrical switching events. Its modular construction allows maintenance engineers and installers to replace a worn or damaged surge protection element without replacing the complete compatible SPD assembly, helping reduce maintenance costs, installation time and unnecessary equipment downtime.
With a maximum continuous operating voltage of 375 V DC, a 20 kA nominal discharge current and a 40 kA maximum discharge current, the Finder 7P.20.9.375.0020 provides dependable surge protection for compatible photovoltaic surge arresters. Its compact plug-in design and visual status indication make it particularly suitable for renewable energy installations, electrical distribution equipment and industrial DC protection applications.
Key Advantages
- Genuine Finder replacement varistor module for compatible 7P Series surge protection devices.
- 375 V DC maximum continuous operating voltage for photovoltaic surge protection applications.
- 20 kA nominal discharge current for effective protection against transient overvoltages.
- 40 kA maximum discharge current for handling high-energy surge events.
- Type 2 surge protection technology designed for photovoltaic DC installations.
- Plug-in replacement design simplifies maintenance without replacing the complete surge arrester.
- Integrated visual status indication helps identify when module replacement is required.
- Fast response to transient overvoltages helps protect sensitive electrical and electronic equipment.
- Compact construction supports efficient use of space inside electrical enclosures.
- Designed for compatibility with selected Finder 7P photovoltaic surge protection assemblies.
Key Features
- Finder 7P Series surge protection replacement module.
- Metal oxide varistor (MOV) surge protection technology.
- 375 V DC maximum continuous operating voltage (UCPV).
- 20 kA nominal discharge current (In) with an 8/20 µs surge waveform.
- 40 kA maximum discharge current (Imax) with an 8/20 µs surge waveform.
- 1.8 kV voltage protection level (Up).
- 25 ns response time for rapid transient suppression.
- Mechanical status indicator for identifying healthy or failed varistor condition.
- Replaceable cartridge construction for compatible Type 2 photovoltaic SPDs.
- Suitable for operation in ambient temperatures from −40 to +80 °C.
- Designed for use within compatible IP20-rated surge protection assemblies.
- Supports continued operation of surge protection systems through straightforward replacement of exhausted modules.
Technical Specifications
- Manufacturer: Finder
- Series: 7P Surge Protection Devices
- Model: 7P.20.9.375.0020
- Alternative part number: 7P2093750020
- Product type: Replacement surge protection varistor module
- Protection technology: Metal oxide varistor (MOV)
- Surge protection application: Type 2 photovoltaic DC surge protection
- Maximum continuous operating voltage (UCPV): 375 V DC
- Nominal discharge current (In): 20 kA (8/20 µs)
- Maximum discharge current (Imax): 40 kA (8/20 µs)
- Voltage protection level (Up): 1.8 kV
- Response time (ta): 25 ns
- Ambient operating temperature: −40 to +80 °C
- Protection rating: IP20 (compatible complete SPD assembly)
- Installation type: Plug-in replacement cartridge
- Status indication: Mechanical visual indicator
- Dimensions (H × W × D): approx. 48.3 × 17.4 × 45 mm
- Net weight: approx. 54.2 g
- EAN: 8012823377094
- Compatible equipment: Selected Finder 7P photovoltaic surge protection devices
- Application: DC photovoltaic surge protection systems
Reliable Surge Protection for Photovoltaic Installations
Surge protection devices help protect electrical installations from transient overvoltages caused by lightning activity and electrical switching disturbances. The Finder 7P.20.9.375.0020 uses metal oxide varistor technology, which provides a high-resistance path during normal operation and rapidly becomes conductive when the voltage exceeds its protective threshold. This enables surge current to be diverted through the correctly installed SPD assembly, reducing the voltage stress experienced by connected equipment.
The Finder 7P Series is designed for reliable surge protection in electrical and photovoltaic applications. The 7P.20.9.375.0020 replacement module is specifically associated with compatible DC photovoltaic surge protection assemblies, including configurations using 375 V DC varistor elements in systems with a maximum operating voltage of 750 V DC. Its 1.8 kV voltage protection level and 25 ns response time help provide rapid protection against potentially damaging voltage transients.
Unlike complete surge protection devices, this product is a replacement varistor cartridge intended to be installed in a compatible Finder SPD base or assembly. It is not a standalone surge arrester and must be used with the appropriate protective equipment. The replaceable design allows a module that has reached the end of its service life to be exchanged, restoring the intended protection capability of the compatible assembly without replacing the complete unit.
Typical Applications
- Photovoltaic solar panel DC surge protection systems.
- Solar inverter DC input protection assemblies.
- Replacement cartridges for compatible Finder 7P Type 2 surge arresters.
- Renewable energy electrical installations.
- Commercial and industrial photovoltaic installations.
- Solar power generation and distribution equipment.
- Electrical control cabinets containing compatible DC surge protection devices.
- Preventative maintenance and replacement of exhausted surge protection modules.
- Protection of sensitive photovoltaic system components against transient overvoltages.
- Industrial DC electrical systems using compatible Finder 7P surge protection assemblies.
