Finder 7P.14.8.275.1012 Type 1+2 surge protection device for three-phase TT and TN-S systems with neutral, featuring 3+1 protection, 275 V AC maximum continuous operating voltage and DIN rail mounting.
£525.40
The Finder 7P.14.8.275.1012 is a high-performance Type 1+2 surge protection device (SPD) designed to protect three-phase low-voltage electrical installations from transient overvoltages caused by direct or indirect lightning discharges, induced surges and switching events. As part of the Finder 7P Series, it is suitable for professional electrical distribution systems requiring reliable protection at the boundary between lightning protection zones.
This surge arrester is designed for three-phase TT and TN-S systems with neutral, using a coordinated 3+1 protection arrangement. It provides varistor protection between L1, L2, L3 and neutral, with a gas discharge tube between neutral and protective earth to help safely divert surge energy away from connected equipment.
With a 275 V AC maximum continuous operating voltage, 12.5 kA lightning impulse current and DIN rail mounting, the Finder 7P.14.8.275.1012 is ideal for distribution boards, industrial switchboards, automation panels and building services installations requiring dependable three-phase surge protection.
Surge protection devices help protect electrical installations by limiting transient overvoltages before they can damage connected equipment. This helps reduce the risk of failure in switchgear, power supplies, control devices, automation hardware and sensitive electronic systems.
The Finder 7P.14.8.275.1012 is designed for three-phase TT and TN-S systems where coordinated Type 1+2 surge protection is required. Its modular construction, DIN rail mounting and remote signalling functionality make it suitable for demanding industrial and commercial electrical installations.
| Manufacturer | Finder |
|---|---|
| Series | 7P Series |
| Model | 7P.14.8.275.1012 |
| Product type | Surge protection device / surge arrester |
| SPD type | Type 1+2 |
| Network type | Three-phase TT and TN-S systems with neutral |
| Poles | 3+N |
| Protection arrangement | 3+1 |
| Protection technology | Varistor L-N + gas discharge tube N-PE |
| Nominal voltage | 230 V AC |
| Maximum continuous operating voltage | 275 V AC |
| Lightning impulse current | 12.5 kA |
| Nominal discharge current | 30 kA / 50 kA |
| Voltage protection level L-N | 1.2 kV |
| Voltage protection level N-PE | 1.5 kV |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail mounting |
| Dimensions (W × H × D) | approx. 71.8 × 87.6 × 65.9 mm |
| Operating temperature | -40 °C to +80 °C |
| HS Code | 85363030 |
The Finder 7P.14.8.275.1012 is used to protect three-phase TT and TN-S low-voltage electrical systems from transient overvoltages caused by lightning discharges, induced surges and switching events.
This product is a Type 1+2 surge protection device, providing combined lightning current and surge protection for three-phase installations.
The Finder 7P.14.8.275.1012 is designed for three-phase TT and TN-S systems with neutral.
It uses a 3+1 protection arrangement, with varistor protection between phases and neutral, plus a gas discharge tube between neutral and protective earth.
The device is designed for 35 mm DIN rail mounting inside electrical distribution boards, switchboards and control panels.
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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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...