Finder 7P.10.1.000.0025 – 7P Series Surge Protection Devices

Why Choose the Finder 7P.10.1.000.0025 Replacement Spark Gap Surge Protection Module?

The Finder 7P.10.1.000.0025 is a high-performance replacement spark gap surge protection module designed for use with compatible Finder 7P Series surge protection devices (SPDs). Engineered to provide reliable protection between neutral and protective earth (N-PE), this replaceable cartridge helps maintain electrical installation protection against transient overvoltages caused by lightning activity and switching events.

Featuring a maximum continuous operating voltage of 255 V AC and a lightning impulse current rating of 25 kA (10/350 µs), the Finder 7P.10.1.000.0025 is designed for demanding electrical distribution applications. Its spark gap technology provides a controlled discharge path for high-energy surge currents, helping protect electrical installations and connected equipment when incorporated into a correctly designed surge protection system.

The module offers a nominal discharge current of 40 kA (8/20 µs), a maximum discharge current of 60 kA (8/20 µs) and a voltage protection level of 1.5 kV. Its plug-in replacement design allows maintenance engineers to replace the appropriate protective element without automatically replacing the complete compatible SPD assembly.

As a replacement cartridge rather than a standalone surge protection device, the Finder 7P.10.1.000.0025 must be installed in a compatible Finder SPD base or assembly. This makes it a practical component for maintaining Type 1+2 surge protection systems in commercial, industrial and building electrical distribution installations.

Key Advantages

• Replacement spark gap cartridge for compatible Finder 7P Series surge protection devices.
• 25 kA lightning impulse current rating using the 10/350 µs waveform.
• 40 kA nominal discharge current for 8/20 µs surge events.
• 60 kA maximum discharge current for high-energy transient conditions.
• 255 V AC maximum continuous operating voltage.
• 1.5 kV voltage protection level helps limit transient overvoltage exposure.
• N-PE protection configuration for compatible electrical distribution systems.
• Spark gap technology provides a discharge path for lightning-related surge currents.
• Replaceable plug-in construction simplifies maintenance of compatible SPD assemblies.
• 100 ns specified response time supports rapid surge protection operation.
• IP20 protection rating for installation within suitable electrical enclosures.
• -40 °C to +80 °C operating temperature range supports demanding environments.
• Compact cartridge construction helps minimise replacement space requirements.
• Finder 7P Series compatibility provides a manufacturer-specified replacement option.

Key Features

• Finder 7P Series surge protection replacement component.
• Manufacturer part number: 7P.10.1.000.0025.
• Product type: Replacement spark gap cartridge.
• Protection path: Neutral to protective earth (N-PE).
• Maximum continuous operating voltage (Uc): 255 V AC.
• Lightning impulse current (Iimp): 25 kA.
• Lightning impulse waveform: 10/350 µs.
• Nominal discharge current (In): 40 kA.
• Maximum discharge current (Imax): 60 kA.
• Discharge current waveform: 8/20 µs.
• Voltage protection level (Up): 1.5 kV.
• Response time: 100 ns.
• Follow-current extinguishing capability: 100 A.
• IP20 ingress protection.
• Operating temperature: -40 °C to +80 °C.
• Plug-in replacement construction for compatible SPD bases.
• Suitable for maintaining compatible Type 1+2 SPD assemblies.
• EAN: 8012823361925.

High-Energy Spark Gap Protection for Electrical Distribution Systems

Electrical distribution systems can be exposed to transient overvoltages generated by lightning strikes, nearby lightning activity and switching operations. These events can introduce high-energy surge currents into an installation, potentially damaging electrical equipment and disrupting operations. The Finder 7P.10.1.000.0025 is designed to maintain the neutral-to-earth protective function of compatible Finder 7P surge protection assemblies.

The module uses spark gap technology to provide a controlled discharge path when a sufficiently high transient voltage occurs. Under normal conditions, the spark gap remains non-conducting. During an appropriate surge event, the protective element conducts and helps divert surge energy through the intended protective path.

With a 25 kA lightning impulse current rating using the 10/350 µs waveform, the cartridge is designed for the high-energy conditions associated with lightning impulse testing. Its 40 kA nominal discharge current and 60 kA maximum discharge current, measured using the 8/20 µs waveform, provide additional performance information for surge protection coordination.

The 1.5 kV voltage protection level is an important characteristic when selecting and coordinating surge protection equipment. The suitability of this protection level depends on the complete SPD assembly, the electrical installation and the impulse withstand capability of connected equipment.

Because the Finder 7P.10.1.000.0025 is a replaceable module, maintenance personnel can restore the intended protective element in a compatible assembly by fitting the correct replacement cartridge. This helps avoid unnecessary replacement of the complete surge protection unit where the manufacturer permits cartridge replacement.

Correct selection is essential. The module must not be treated as a general-purpose standalone lightning arrester or substituted for a varistor cartridge simply because the products share the same series. The replacement part number, SPD base, protection path and installation configuration must all match the manufacturer's specifications.

Installation, Replacement and Maintenance

The Finder 7P.10.1.000.0025 is intended for installation into a compatible Finder 7P Series surge protection assembly. It is not a complete DIN rail-mounted SPD by itself, and it must not be connected directly to an electrical distribution system without its specified mounting assembly.

Before replacing a surge protection cartridge, the electrical installation must be made safe by a competent electrical professional. The correct isolation procedure should be followed, and the absence of dangerous voltage must be verified before the protective module is removed.

Once the correct replacement has been identified, the cartridge can be installed into the compatible SPD base according to Finder's instructions. The installer should confirm that the replacement is fully seated and that the complete SPD assembly remains correctly connected, protected and suitable for the electrical system.

Surge protection equipment should be inspected as part of a planned electrical maintenance programme, particularly following known lightning events or significant electrical disturbances. Any failed or damaged module should be replaced with the appropriate manufacturer-specified component.

The IP20 rating means the cartridge should be installed within an appropriately rated electrical distribution enclosure. The complete installation must comply with relevant electrical regulations and surge protection requirements, including applicable provisions of BS 7671 and the relevant IEC/EN 61643 standards.

Typical Applications

• Replacement modules for compatible Finder 7P surge protection devices.
• Neutral-to-earth surge protection maintenance.
• Commercial electrical distribution boards.
• Industrial electrical switchboards.
• Building main distribution systems.
• Electrical installations incorporating Type 1+2 surge protection.
• Industrial automation power distribution cabinets.
• Building services electrical installations.
• Utility and infrastructure electrical systems.
• Electrical maintenance following surge protection module failure.
• Planned replacement of compatible SPD cartridges.
• Electrical distribution systems requiring high-energy N-PE surge protection.