Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
7P.14.8.275.1012 Finder Surge Protection Device SPD arresters 3ph
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.
£394.05
Why Choose the Finder 7P.14.8.275.1012 Surge Protection Device?
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.
Key Advantages
- Type 1+2 surge protection device for three-phase electrical installations.
- 3+1 protection arrangement for TT and TN-S systems with neutral.
- 12.5 kA lightning impulse current for high-energy surge protection.
- 275 V AC maximum continuous operating voltage.
- Varistor protection with N-PE gas discharge tube for coordinated protection.
- Visual and remote status signalling supports easier maintenance.
Key Features
- Finder 7P Series surge protection device.
- Type 1+2 SPD classification.
- Three-phase TT and TN-S system compatibility.
- 3+N pole configuration.
- 3+1 protection arrangement.
- 275 V AC maximum continuous operating voltage.
- 35 mm DIN rail mounting for switchboards and panels.
- IP20 protection rating for enclosed electrical installations.
Reliable Surge Protection for TT and TN-S Installations
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.
Typical Applications
- Three-phase TT and TN-S electrical distribution boards.
- Industrial control panels and automation cabinets.
- Commercial switchboards and building services systems.
- Machinery control systems and OEM electrical panels.
- Facility power distribution and infrastructure installations.
- Protection of sensitive electrical and electronic equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Impulse Current Iimp (kA) | 12.5 kA | |
|---|---|---|
| Poles | 3-pole + N | |
| Device Type | Surge protection device | |
| SPD Type | Type 1+2 | |
| Nominal Discharge Current (In) | 30 kA | |
| Earthing System | TN-S, TT | |
| 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 |
Frequently Asked Questions
What is the Finder 7P.14.8.275.1012 used for?
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.
What type of surge protection device is this?
This product is a Type 1+2 surge protection device, providing combined lightning current and surge protection for three-phase installations.
Which electrical systems is this SPD suitable for?
The Finder 7P.14.8.275.1012 is designed for three-phase TT and TN-S systems with neutral.
What protection arrangement does this device use?
It uses a 3+1 protection arrangement, with varistor protection between phases and neutral, plus a gas discharge tube between neutral and protective earth.
How is the Finder 7P.14.8.275.1012 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.
