Why Choose the Finder 7P.32.8.275.0005 Type 3 Surge Protection Device?
The Finder 7P.32.8.275.0005 is a compact and reliable Type 3 AC surge protection device (SPD) designed to protect LED lighting installations and sensitive electrical equipment against transient overvoltages. As part of the Finder 7P surge protection series, this single-phase surge arrester provides point-of-use protection against voltage spikes caused by lightning-induced surges and electrical switching events.
Featuring an advanced 1+1 protection configuration combining a metal oxide varistor (MOV) and a gas discharge tube (GDT), the Finder 7P.32.8.275.0005 provides protection between live and neutral and between neutral and protective earth. This arrangement offers a low voltage protection level while helping avoid continuous earth leakage current, making it particularly suitable for sensitive electronic equipment and modern LED lighting systems.
With a 230 V AC nominal operating voltage, a 275 V AC maximum continuous operating voltage and a 5 kA nominal discharge current, the Finder 7P.32.8.275.0005 is ideal for single-phase lighting and electrical installations. Its IP65-rated enclosure, integrated LED replacement indication and three pre-wired 150 mm connection leads make it suitable for street lighting, commercial LED luminaires, architectural lighting and industrial lighting applications.
Key Advantages
- Compact Type 3 surge protection device designed for LED lighting and sensitive electronic equipment.
- 1+1 protection configuration combining varistor and gas discharge tube technology.
- 230 V AC nominal voltage suitable for standard single-phase electrical installations.
- 275 V AC maximum continuous operating voltage for mains-powered lighting circuits.
- 5 kA nominal discharge current for effective protection against transient overvoltages.
- 10 kA maximum discharge current for handling higher-energy surge events.
- 1.65 kV L-N voltage protection level helps protect sensitive electronic components.
- 1.5 kV L(N)-PE voltage protection level provides additional protection through the earthing connection.
- IP65-rated enclosure offers protection against dust ingress and water jets.
- Integrated LED replacement indicator helps identify when the surge protection device requires replacement.
- Three pre-wired 150 mm connection leads simplify installation.
- Suitable for TT and TN-S earthing systems with neutral conductors.
- Compact construction supports installation close to LED drivers and other sensitive equipment.
Key Features
- Finder 7P Series surge protection device.
- Type 3 (Class III) surge protection classification.
- Single-phase AC surge protection for lighting and electronic equipment.
- 1+1 protection configuration with varistor and gas discharge tube.
- Live, neutral and protective earth connections for coordinated L-N and N-PE protection.
- 230 V AC nominal voltage (UN).
- 275 V AC maximum continuous operating voltage (UC).
- 5 kA nominal discharge current (In) for L-N and L(N)-PE protection paths using an 8/20 µs waveform.
- 10 kA maximum discharge current (Imax) for L-N and N-PE protection paths using an 8/20 µs waveform.
- 10 kV combined-wave open-circuit test voltage (UOC).
- 1.65 kV voltage protection level (Up) between live and neutral.
- 1.5 kV voltage protection level (Up) for the L(N)-PE protection path.
- 25 ns L-N response time for rapid transient suppression.
- 100 ns L(N)-PE response time.
- LED indication when surge protection device replacement is required.
- IP65 protection rating for suitable indoor and outdoor lighting applications.
- Three 150 mm connection leads for straightforward electrical connection.
- 1.5 kA rms short-circuit current rating (ISSCR) with specified upstream protection.
- Operating temperature range of −25 to +80 °C.
- Designed in accordance with EN 61643-11:2012.
Technical Specifications
- Manufacturer: Finder
- Series: 7P Surge Protection Devices
- Model: 7P.32.8.275.0005
- Alternative part number: 7P3282750005
- Product type: AC surge protection device for LED lighting
- SPD classification: Type 3 / Class III
- Protection technology: Metal oxide varistor (MOV) and gas discharge tube (GDT)
- Protection configuration: 1+1 (L-N and N-PE)
- Number of phases: Single-phase
- Earthing systems: TT and TN-S with neutral
- Nominal voltage (UN): 230 V AC
- Maximum continuous operating voltage (UC): 275 V AC
- Nominal discharge current L-N (In): 5 kA (8/20 µs)
- Nominal discharge current L(N)-PE (In): 5 kA (8/20 µs)
- Maximum discharge current L-N (Imax): 10 kA (8/20 µs)
- Maximum discharge current N-PE (Imax): 10 kA (8/20 µs)
- Combined-wave open-circuit voltage L-N (UOC): 10 kV
- Combined-wave open-circuit voltage L(N)-PE (UOC): 10 kV
- Voltage protection level L-N (Up): 1.65 kV
- Voltage protection level L(N)-PE (Up): 1.5 kV
- Response time L-N (ta): 25 ns
- Response time L(N)-PE (ta): 100 ns
- Short-circuit current rating (ISSCR): 1.5 kA rms
- Maximum upstream overcurrent protection: 16 A gL/gG fuse, B16 A or C10 A circuit breaker
- Ambient operating temperature: −25 to +80 °C
- Protection rating: IP65
- Installation type: Surface / recessed mounting within suitable equipment
- Connection type: Pre-wired leads
- Number of connection leads: 3
- Connection lead length: 150 mm
- Electrical connections: Live (L), Neutral (N) and Protective Earth (PE)
- Status indication: LED replacement indicator
- Remote signalling: Not included
- Dimensions (H × W × D): 44 × 39 × 13 mm
- EAN: 8012823399478
- Applicable standard: EN 61643-11:2012
- Primary application: LED lighting and single-phase electronic equipment protection
Reliable Type 3 Surge Protection for LED Lighting Systems
Modern LED lighting systems contain sensitive electronic components, including LED drivers, power supplies and control circuits, which can be damaged by transient overvoltages. These disturbances may originate from nearby lightning activity, electrical switching operations or other events on the electrical supply network. The Finder 7P.32.8.275.0005 helps protect connected equipment by limiting transient overvoltages through its combined varistor and gas discharge tube protection arrangement.
The device features a 1+1 protection configuration consisting of a metal oxide varistor between live and neutral and a gas discharge tube between neutral and protective earth. The varistor responds rapidly to excessive transient voltages, while the gas discharge tube provides a surge discharge path to protective earth without creating continuous earth leakage current during normal operation. This arrangement is particularly advantageous for sensitive lighting electronics and single-phase TT or TN-S electrical systems.
With a 1.65 kV voltage protection level between live and neutral and a 1.5 kV protection level for the L(N)-PE path, the Finder 7P.32.8.275.0005 helps reduce the voltage stress experienced by connected electronic equipment. Its 25 ns L-N response time and 100 ns L(N)-PE response time support rapid protection against potentially damaging electrical transients.
As a Type 3 surge protection device, this model is designed for installation close to the equipment requiring protection. It is particularly suitable as the final stage of a coordinated surge protection system, complementing upstream Type 1 or Type 2 surge protection devices installed at distribution boards or other electrical protection points.
The IP65-rated enclosure provides resistance to dust and water jets, making the device suitable for appropriately designed indoor and outdoor lighting installations. Its compact dimensions and three pre-wired 150 mm connection leads simplify integration into LED luminaire housings, electrical junction boxes and other suitable equipment.
An integrated LED replacement indicator provides a visual indication when the surge protection device has reached its replacement condition. This helps maintenance personnel identify an exhausted protection unit during routine inspections. The Finder 7P.32.8.275.0005 is a compact wired SPD rather than a replaceable cartridge assembly, so the complete device should be replaced when its protection function is exhausted.
Typical Applications
- LED street lighting and public lighting installations.
- Outdoor LED luminaires and architectural lighting.
- Commercial and industrial LED lighting systems.
- LED floodlights and security lighting equipment.
- Car park lighting and exterior building illumination.
- Tunnel lighting and transport infrastructure.
- LED drivers and electronic lighting power supplies.
- Warehouse, factory and workshop lighting systems.
- Building façade and landscape lighting installations.
- Single-phase TT and TN-S electrical systems.
- Lighting junction boxes and compact electrical enclosures.
- Sensitive electronic equipment requiring point-of-use surge protection.
- Final-stage surge protection in coordinated electrical protection systems.
