7P.22.8.275.0020 Finder Surge Protection Device SPD arresters 1ph

7P.22.8.275.0020 Finder Surge Protection Device SPD arresters 1ph

Finder 7P.22.8.275.0020 Type 2 surge protection device for single-phase TT and TN-S electrical systems, featuring 1+NPE protection, 275 V AC varistor rating, 20 kA nominal discharge current and replaceable varistor and spark gap modules.

SKU: 7P.22.8.275.0020Alt SKU: 7P2282750020MPN: 7P.22.8.275.0020
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Why Choose the Finder 7P.22.8.275.0020 Type 2 Surge Protection Device?

The Finder 7P.22.8.275.0020 is a Type 2 surge protection device (SPD) from the Finder 7P Series, designed to protect low-voltage electrical installations against transient overvoltages caused by induced lightning surges and electrical switching disturbances. Its two-pole configuration makes it suitable for compatible AC power distribution and electrical protection applications.

This surge protection device uses metal oxide varistor (MOV) technology to limit transient voltage spikes and divert surge currents away from connected electrical equipment. By reducing the effects of transient overvoltages, it helps protect sensitive control equipment, electrical components and distribution systems against surge-related damage.

With a 275 V AC maximum continuous operating voltage and a 20 kA nominal discharge current, the Finder 7P.22.8.275.0020 provides a practical solution for electrical installations requiring Type 2 surge protection. Its modular construction and 35 mm DIN rail mounting enable straightforward integration into electrical distribution boards, industrial control panels and suitable protection enclosures.

Key Advantages

  • Reliable Type 2 surge protection for low-voltage AC electrical installations.
  • Two-pole configuration for compatible electrical distribution arrangements.
  • 275 V AC maximum continuous operating voltage suitable for appropriately designed AC circuits.
  • 20 kA nominal discharge current for effective transient overvoltage protection.
  • Metal oxide varistor technology provides rapid response to electrical surges.
  • Helps protect sensitive electrical equipment against induced lightning and switching overvoltages.
  • Compact modular design supports efficient use of space in distribution boards.
  • DIN rail mounting simplifies installation and integration.
  • Suitable for residential, commercial and industrial electrical protection applications.

Key Features

  • Finder 7P Series surge protection device.
  • Type 2 surge arrester for AC electrical installations.
  • Two-pole protection configuration.
  • 275 V AC maximum continuous operating voltage (Uc).
  • 20 kA nominal discharge current (In) using an 8/20 µs waveform.
  • Varistor-based transient overvoltage protection.
  • Designed to limit voltage surges associated with lightning induction and electrical switching.
  • Modular construction for installation in electrical distribution enclosures.
  • 35 mm DIN rail mounting for standard electrical panels.
  • Suitable for coordinated surge protection arrangements.
  • Designed for low-voltage electrical installations requiring Type 2 SPD protection.

Technical Specifications

  • Manufacturer: Finder
  • Series: 7P Series Surge Protection Devices
  • Model: 7P.22.8.275.0020
  • Product type: AC surge protection device
  • SPD classification: Type 2
  • Number of poles: 2
  • Protection technology: Metal oxide varistor (MOV)
  • Maximum continuous operating voltage (Uc): 275 V AC
  • Nominal discharge current (In, 8/20 µs): 20 kA
  • Surge protection function: Transient overvoltage limitation
  • Electrical application: Low-voltage AC distribution systems
  • Mounting type: 35 mm DIN rail
  • Installation: Electrical distribution boards and suitable control enclosures
  • Product family: Finder 7P electrical surge protection

Reliable Surge Protection for Electrical Distribution and Automation Systems

Transient overvoltages can enter electrical installations through incoming power supplies, distribution wiring and switching operations. Surge protection devices such as the Finder 7P.22.8.275.0020 help reduce the impact of these disturbances by limiting excessive voltages and diverting transient surge currents through a suitably designed protection arrangement.

The Finder 7P Series supports electrical engineers and installers in protecting sensitive equipment within residential, commercial and industrial installations. Correctly selected Type 2 surge protection can help reduce the risk of damage to control systems, power supplies and electrical components while supporting reliable operation. The SPD must be coordinated with the installation earthing arrangement, upstream protective devices and applicable electrical installation requirements.

Typical Applications

  • Residential electrical distribution boards.
  • Commercial building electrical installations.
  • Industrial electrical control panels.
  • Low-voltage AC power distribution systems.
  • Automation and machinery control cabinets.
  • Electrical power supply protection.
  • Building services and electrical infrastructure.
  • Installations requiring two-pole Type 2 surge protection.

Frequently Asked Questions

What is the Finder 7P.22.8.275.0020 used for?

The Finder 7P.22.8.275.0020 is a two-pole Type 2 surge protection device designed to protect compatible low-voltage AC electrical installations against transient overvoltages caused by induced lightning and switching disturbances.

What is the maximum operating voltage of this surge protection device?

The Finder 7P.22.8.275.0020 has a maximum continuous operating voltage of 275 V AC and should be selected according to the electrical system voltage and earthing arrangement.

What is the nominal discharge current of the Finder 7P.22.8.275.0020?

The device has a 20 kA nominal discharge current, measured using an 8/20 µs surge waveform, for protection against transient overvoltages.

Is the Finder 7P.22.8.275.0020 a Type 1 or Type 2 surge protector?

The Finder 7P.22.8.275.0020 is a Type 2 surge protection device intended for transient overvoltage protection in low-voltage AC installations. Where direct lightning current protection is required, an appropriately rated Type 1 or combined Type 1+2 SPD may also be necessary.

Where is the Finder 7P.22.8.275.0020 typically installed?

The device is designed for DIN rail mounting inside suitable electrical distribution boards, industrial control panels and protection enclosures, with installation carried out according to the electrical system design and applicable safety standards.

Trusted by Electrical Installers and Automation Engineers Worldwide

Finder 7P Series surge protection devices provide practical solutions for protecting low-voltage electrical installations against transient overvoltages, helping electrical contractors, panel builders and industrial engineers safeguard connected equipment and maintain reliable electrical system operation.

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