Why Choose the Finder 7P.02.8.275.1012 Type 1+2 Surge Protection Device?
The Finder 7P.02.8.275.1012 is a compact Type 1+2 surge protection device (SPD) from the Finder 7P Series, designed to protect single-phase electrical installations against transient overvoltages caused by lightning activity and electrical switching operations. Intended for 230 V AC systems, this DIN rail-mounted surge arrester provides coordinated protection between line and neutral (L-N) and neutral and protective earth (N-PE), helping safeguard electrical distribution equipment and sensitive electronic components.
Featuring a 1+NPE protection configuration, the Finder 7P.02.8.275.1012 combines high-energy varistor technology with an encapsulated gas discharge tube (GDT). Its 275 V AC maximum continuous operating voltage (Uc), 30 kA nominal discharge current (In) and 60 kA maximum discharge current (Imax) provide substantial surge handling capability for appropriately designed low-voltage installations.
The device incorporates replaceable protection modules, visual status indication and an integrated SPDT remote signalling contact for monitoring surge protection status. With a compact 36 mm width, IP20 protection and standard 35 mm DIN rail mounting, it is particularly suitable for electrical distribution boards, industrial automation panels, building services installations and single-phase electrical infrastructure.
Key Advantages
- Type 1+2 surge protection combines lightning impulse and transient overvoltage protection in one assembly.
- 1+NPE configuration provides protection for single-phase systems with neutral and protective earth.
- 230 V AC nominal voltage for compatible low-voltage electrical installations.
- 275 V AC maximum continuous operating voltage supports appropriate operation on compatible supply systems.
- 30 kA nominal discharge current provides substantial surge handling capability.
- 60 kA maximum discharge current supports protection against high-energy transient events.
- 1.5 kV voltage protection level helps limit transient overvoltages reaching connected equipment.
- Combined varistor and GDT technology provides coordinated L-N and N-PE protection.
- Replaceable protection modules simplify maintenance and reduce unnecessary replacement of the complete assembly.
- Visual status indication enables straightforward inspection of protection condition.
- Integrated SPDT remote signalling contact supports connection to compatible monitoring systems.
- 36 mm modular width saves space in electrical distribution boards.
- 35 mm DIN rail mounting supports straightforward installation.
- −40 to +80 °C operating temperature range supports demanding installation environments.
- Suitable for industrial automation, electrical distribution and building protection applications.
Key Features
- Finder 7P Series surge protection device.
- Type 1+2 combined surge arrester.
- Single-phase 1+NPE protection configuration.
- Varistor and encapsulated gas discharge tube technology.
- L-N and N-PE protection paths.
- 230 V AC nominal operating voltage.
- 275 V AC maximum continuous operating voltage.
- 30 kA nominal discharge current (8/20 µs).
- 60 kA maximum discharge current (8/20 µs).
- 1.5 kV voltage protection level.
- 50 kA short-circuit current rating.
- Integrated SPDT remote status contact.
- Visual protection status indication.
- Replaceable surge protection modules.
- 35 mm DIN rail mounting according to EN 60715.
- 36 mm overall width, equivalent to two modular spaces.
- IP20 protection degree.
- −40 to +80 °C operating temperature range.
- Suitable for compatible single-phase TT and TN-S electrical systems.
Technical Specifications
- Manufacturer: Finder
- Product series: 7P Series
- Manufacturer part number: 7P.02.8.275.1012
- Product type: Surge protection device (SPD)
- Surge protection classification: Type 1+2
- Protection configuration: 1+NPE
- Electrical system: Single-phase AC with neutral
- Compatible earthing arrangements: TT and TN-S, subject to installation requirements
- Nominal voltage (Un): 230 V AC
- Maximum continuous operating voltage (Uc): 275 V AC
- Nominal discharge current (In), 8/20 µs: 30 kA
- Maximum discharge current (Imax), 8/20 µs: 60 kA
- Voltage protection level (Up): 1.5 kV
- Short-circuit current rating (Isccr): 50 kA
- Protection technology: Varistor and encapsulated gas discharge tube
- L-N protection: Combined varistor and GDT
- N-PE protection: Gas discharge tube
- Remote signalling: Integrated SPDT auxiliary contact
- Local status indication: Optical / visual indication
- Protection modules: Replaceable
- Maximum upstream fuse rating: 160 A
- Mounting method: 35 mm DIN rail according to EN 60715
- Modular width: 36 mm
- Number of modular spaces: 2
- Overall height: 87.6 mm
- Overall depth: 76 mm
- Maximum rigid conductor cross-section: 35 mm²
- Maximum flexible conductor cross-section: 25 mm²
- Ingress protection: IP20
- Operating temperature: −40 to +80 °C
- EAN: 8012823437903
- Application: Single-phase electrical distribution surge protection
Combined Lightning and Transient Surge Protection for Electrical Distribution
Industrial and commercial electrical installations can experience transient overvoltages caused by lightning strikes, induced lightning currents and switching operations within the electrical supply network. These disturbances can damage sensitive components such as PLCs, variable speed drives, power supplies, communication interfaces and electronic control equipment.
The Finder 7P.02.8.275.1012 provides Type 1+2 surge protection for compatible single-phase electrical systems. Type 1 capability supports the handling of high-energy lightning impulses, while Type 2 functionality helps limit transient overvoltages associated with induced surges and electrical switching events.
Its 1+NPE configuration incorporates protection between line and neutral and between neutral and protective earth. This arrangement is particularly relevant to appropriately designed TT and TN-S single-phase systems, where the correct selection and placement of surge protection devices is essential for effective protection.
The combination of varistor technology and encapsulated gas discharge tubes provides effective surge limitation while supporting the electrical characteristics required for the intended protection arrangement. The specified 1.5 kV voltage protection level helps reduce transient overvoltage stress on connected equipment.
For installations requiring ongoing protection monitoring, the integrated SPDT auxiliary contact enables compatible monitoring equipment to detect changes in SPD status. This is useful in industrial automation cabinets, unmanned installations and electrical distribution systems where maintenance personnel may not be able to inspect the device frequently.
The replaceable protection modules simplify maintenance following end-of-life indication. Instead of replacing the complete SPD assembly, appropriately trained personnel can replace the relevant cartridge in accordance with Finder's instructions, after safely isolating the installation.
Correct surge protection performance depends on the complete electrical installation, including earthing, upstream protection, conductor length, protective device coordination and installation location. Engineers should follow the applicable electrical installation standards and Finder's technical documentation when specifying and installing the device.
Typical Applications
- Single-phase electrical distribution boards.
- Industrial automation and PLC control panels.
- Motor control and machinery electrical installations.
- Commercial building electrical distribution systems.
- Building services and facilities management.
- Industrial power supply protection.
- Electrical infrastructure and utility installations.
- Single-phase TT and TN-S electrical systems.
- Industrial instrumentation and control cabinets.
- Remote monitoring and unmanned electrical installations.
- Electrical panel manufacturing and refurbishment.
- Lightning and switching surge protection systems.
- Preventative electrical maintenance projects.
