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7P.22.8.275.1020 Finder Surge Protection Device SPD arresters 1ph

7P.22.8.275.1020 Finder Surge Protection Device SPD arresters 1ph

Finder 7P.22.8.275.1020 Type 2 surge protection device for single-phase TT and TN-S systems, featuring 1+NPE configuration, varistor and spark gap protection, 230 V AC nominal voltage and 20 kA nominal discharge current.

SKU: 7P.22.8.275.1020Alt SKU: 7P2282751020MPN: 7P.22.8.275.1020
Price
List Price £131.01 ex VAT
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£131.01
Manufacturer Lead Time Standard Manufacturer Lead Time 6-8 Weeks, Call For Express Delivery Options
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Why Choose the Finder 7P.22.8.275.1020 Surge Protection Device?

The Finder 7P.22.8.275.1020 is a compact and reliable Type 2 surge protection device (SPD) designed to protect single-phase low-voltage electrical installations from transient overvoltages caused by induced surges and switching events. As part of the Finder 7P Series, it is suitable for TT and TN-S systems requiring dependable surge protection inside distribution boards, control panels and switchboards.

This surge arrester combines a replaceable varistor module with an encapsulated spark gap module, providing coordinated protection between line, neutral and protective earth. Its visual and remote signalling functions help identify device status, making inspection and preventative maintenance easier for electrical contractors and panel builders.

With a 230 V AC nominal voltage, 275 V AC maximum continuous operating voltage, 20 kA nominal discharge current and compact DIN rail mounting, the Finder 7P.22.8.275.1020 is ideal for protecting sensitive equipment in commercial, industrial and building services installations.

Key Advantages

  • Type 2 surge protection device for single-phase low-voltage systems.
  • 1+NPE pole configuration for TT and TN-S installations.
  • 20 kA nominal discharge current for dependable surge handling.
  • Combination of varistor and spark gap protection.
  • Visual and remote signalling for easier status monitoring.
  • Compact 35 mm DIN rail mounting for electrical panels and switchboards.

Key Features

  • Finder 7P Series surge protection device.
  • Type 2 SPD classification.
  • Single-phase 1+NPE configuration.
  • 230 V AC nominal voltage.
  • 275 V AC / 350 V DC maximum continuous operating voltage.
  • 20 kA nominal discharge current.
  • Replaceable varistor and encapsulated spark gap modules.
  • IP20 protection rating for enclosed electrical installations.

Reliable Type 2 Surge Protection for Single-Phase Systems

Type 2 surge protection devices are commonly installed in electrical distribution boards and control panels to limit transient overvoltages before they reach connected equipment. This helps protect power supplies, PLCs, control devices, switchgear, instrumentation and sensitive electronic systems.

The Finder 7P.22.8.275.1020 is designed for use at the boundary between LPZ 1 and LPZ 2, providing effective protection against induced and switching overvoltages. Its compact modular design, DIN rail mounting and status signalling make it a practical choice for professional electrical installations.

Typical Applications

  • Single-phase electrical distribution boards.
  • TT and TN-S low-voltage installations.
  • Industrial control panels and automation cabinets.
  • Commercial switchboards and building services systems.
  • Protection of power supplies, PLCs and control equipment.
  • OEM machinery panels and electrical enclosures.

Technical Specifications

Manufacturer Finder
Series 7P Series
Model 7P.22.8.275.1020
Product type Surge protection device / surge arrester
SPD Type Type 2
System type Single-phase TT and TN-S systems
Poles 1+NPE
Protection technology Varistor + encapsulated spark gap
Nominal voltage 230 V AC
Maximum continuous operating voltage 275 V AC / 350 V DC
Nominal discharge current 20 kA
Voltage protection level 1.2 kV L-N / 1.5 kV N-PE
Protection rating IP20
Mounting type 35 mm DIN rail mounting
Dimensions (H × W × D) approx. 89.8 × 35 × 56.9 mm
Operating temperature -40 °C to +80 °C
HS Code 85363030
Poles 1-pole + N
Device Type Surge protection device
SPD Type Type 2
Nominal Discharge Current (In) 20 kA

Frequently Asked Questions

What is the Finder 7P.22.8.275.1020 used for?

The Finder 7P.22.8.275.1020 is used to protect single-phase low-voltage electrical systems from transient overvoltages caused by induced surges and switching events.

What type of surge protection device is this?

This product is a Type 2 surge protection device, designed for panel-level surge protection in low-voltage electrical installations.

Which electrical systems is this SPD suitable for?

The Finder 7P.22.8.275.1020 is suitable for single-phase TT and TN-S systems using a 1+NPE configuration.

What protection technology does it use?

It uses a combination of replaceable varistor protection and an encapsulated spark gap module for coordinated surge protection.

How is the Finder 7P.22.8.275.1020 installed?

The device is designed for 35 mm DIN rail mounting inside electrical distribution boards, switchboards and control panels.

Trusted by Electrical Professionals Worldwide

Finder 7P Series surge protection devices are widely used by electrical contractors, panel builders and automation engineers to help protect low-voltage installations and sensitive equipment from damaging surge events.

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