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7P.24.8.275.1020 Finder Surge Protection Device SPD arresters 3ph
Finder 7P.24.8.275.1020 Type 2 surge protection device for three-phase TT and TN-S systems with 3+NPE configuration, replaceable varistor and spark gap modules, 20 kA nominal discharge current and DIN rail mounting.
£187.17
Why Choose the Finder 7P.24.8.275.1020 Surge Protection Device?
The Finder 7P.24.8.275.1020 is a high-performance Type 2 surge protection device (SPD) designed to protect three-phase TT and TN-S low-voltage electrical systems from transient overvoltages caused by induced lightning surges and switching events. As part of the dependable Finder 7P Series, it provides reliable protection for industrial, commercial and infrastructure electrical installations.
The device combines three replaceable varistor modules with an encapsulated spark gap module to provide coordinated protection between L1, L2, L3, neutral and protective earth. Visual indication together with an integrated remote signalling contact allows quick monitoring of the protection status, reducing maintenance time and improving system availability.
With a 230 V AC nominal voltage, 275 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 40 kA maximum discharge current, the Finder 7P.24.8.275.1020 is ideal for protecting distribution boards, industrial control panels, automation systems and sensitive electronic equipment.
Key Advantages
- Type 2 surge protection device for three-phase TT and TN-S systems.
- 3+NPE configuration with coordinated phase and neutral protection.
- 20 kA nominal discharge current for dependable surge protection.
- 40 kA maximum discharge current for enhanced surge handling capability.
- Combination of replaceable varistor and encapsulated spark gap modules.
- Visual and remote signalling simplifies preventative maintenance.
Key Features
- Finder 7P Series surge protection device.
- Type 2 SPD classification.
- Suitable for TT and TN-S three-phase systems.
- 3+NPE pole configuration.
- 230 V AC nominal voltage.
- 275 V AC maximum continuous operating voltage.
- 35 mm DIN rail mounting.
- IP20 protection rating.
Reliable Type 2 Surge Protection for Three-Phase Systems
Type 2 surge protection devices reduce the risk of damage caused by transient overvoltages by diverting surge energy away from sensitive electrical equipment. This helps protect PLCs, drives, power supplies, switchgear, instrumentation and automation equipment while improving the reliability of electrical installations.
The Finder 7P.24.8.275.1020 is designed for installation in three-phase distribution boards and control panels where coordinated Type 2 protection is required. Its replaceable protection modules, DIN rail mounting and integrated signalling functions make it an ideal solution for demanding industrial and commercial applications.
Typical Applications
- Three-phase electrical distribution boards.
- Industrial automation and control panels.
- Commercial switchboards.
- Building services electrical installations.
- OEM machinery and process equipment.
- Protection of sensitive electronic and electrical equipment.
Technical Specifications
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| Device Type | Surge protection device | |
|---|---|---|
| SPD Type | Type 2 | |
| Nominal Discharge Current (In) | 20 kA | |
| Earthing System | TN-S, TT | |
| Manufacturer | Finder | |
| Series | 7P Series | |
| Model | 7P.24.8.275.1020 | |
| Product type | Surge protection device / surge arrester | |
| SPD Type | Type 2 | |
| Network type | Three-phase TT and TN-S systems | |
| Configuration | 3+NPE | |
| Protection technology | 3 replaceable varistors + encapsulated spark gap | |
| Nominal voltage | 230 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Nominal discharge current (In) | 20 kA | |
| Maximum discharge current (Imax) | 40 kA | |
| Voltage protection level (Up) | 1.5 kV | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail mounting | |
| Dimensions (H × W × D) | approx. 90 × 70 × 56.9 mm | |
| Operating temperature | -40 °C to +80 °C | |
| HS Code | 85363030 |
Frequently Asked Questions
What is the Finder 7P.24.8.275.1020 used for?
The Finder 7P.24.8.275.1020 protects three-phase TT and TN-S electrical systems from transient overvoltages caused by induced lightning surges and switching events.
What type of surge protection device is this?
This is a Type 2 surge protection device designed to protect low-voltage electrical installations from switching and induced overvoltages.
Which electrical systems is it suitable for?
The device is designed for three-phase TT and TN-S systems using a 3+NPE configuration.
What is the surge current rating?
The Finder 7P.24.8.275.1020 has a 20 kA nominal discharge current and a 40 kA maximum discharge current.
How is the Finder 7P.24.8.275.1020 installed?
The device is designed for standard 35 mm DIN rail mounting inside electrical distribution boards and control panels.
Trusted by Electrical Professionals Worldwide
Finder 7P Series surge protection devices are trusted by electrical contractors, panel builders and automation engineers to provide dependable protection for low-voltage industrial and commercial electrical installations.
