Why Choose the Finder 7P.23.8.150.0015 Type 2 Surge Protection Device?
The Finder 7P.23.8.150.0015 is a three-pole Type 2 surge protection device (SPD) designed to protect three-phase TN-C electrical installations against transient overvoltages caused by induced lightning surges and electrical switching disturbances. As part of the Finder 7P Series surge protection range, it provides reliable protection for industrial power distribution, electrical control panels and automation equipment operating on compatible 120 V AC systems.
This surge protection device incorporates metal oxide varistor (MOV) technology to divert transient surge currents and limit potentially damaging voltage spikes. Its three-pole configuration provides protection between the three phase conductors and the combined protective earth and neutral (PEN) conductor. Replaceable varistor modules and integrated visual status indicators simplify maintenance and help ensure dependable surge protection throughout the installation's service life.
With a 150 V AC maximum continuous operating voltage, a 15 kA nominal discharge current and a 40 kA maximum discharge current, the Finder 7P.23.8.150.0015 offers effective protection for suitable three-phase TN-C electrical systems. Its compact modular construction, IP20 protection rating and standard 35 mm DIN rail mounting enable straightforward installation inside electrical distribution boards and industrial control enclosures.
Key Advantages
- Reliable Type 2 surge protection for three-phase TN-C electrical installations.
- Three-pole protection configuration for L1, L2 and L3 to PEN connections.
- 150 V AC maximum continuous operating voltage for compatible low-voltage systems.
- 15 kA nominal discharge current for protection against transient overvoltages.
- 40 kA maximum discharge current for high-energy surge events.
- 0.74 kV voltage protection level helps limit damaging transient voltages.
- Replaceable metal oxide varistor modules simplify maintenance.
- Integrated Healthy/Replace visual status indication enables convenient inspection.
- Compact 35 mm DIN rail-mounted design simplifies electrical panel integration.
- Designed for installation at the boundary between lightning protection zones LPZ 1 and LPZ 2.
- Suitable for industrial distribution systems, machinery and automation installations.
Key Features
- Finder 7P Series surge protection device.
- Type 2 three-pole surge arrester.
- TN-C earthing system compatibility.
- 120 V AC nominal system voltage.
- 150 V AC maximum continuous operating voltage (Uc).
- 15 kA nominal discharge current (In, 8/20 µs).
- 40 kA maximum discharge current (Imax, 8/20 µs).
- 0.74 kV voltage protection level (Up) at nominal discharge current.
- 0.6 kV voltage protection level at 5 kA.
- 25 ns response time for rapid transient overvoltage limitation.
- Varistor protection between L1, L2, L3 and PEN.
- Replaceable varistor modules for convenient maintenance.
- Integrated visual Healthy/Replace indication.
- Standard version without remote signalling contact.
- IP20 protection rating for installation inside suitable electrical enclosures.
- Operating temperature range of −40 to +80 °C.
- 35 mm DIN rail mounting in accordance with EN 60715.
- Designed in accordance with EN 61643-11:2012.
Technical Specifications
- Manufacturer: Finder
- Series: 7P Series Surge Protection Devices
- Model: 7P.23.8.150.0015
- Product type: Three-phase AC surge protection device
- SPD classification: Type 2
- Number of poles: 3
- Earthing system: TN-C
- Protection configuration: L1-PEN, L2-PEN, L3-PEN
- Protection technology: Metal oxide varistor (MOV)
- Nominal system voltage (Un): 120 V AC
- Maximum continuous operating voltage (Uc): 150 V AC
- Nominal discharge current (In, 8/20 µs): 15 kA
- Maximum discharge current (Imax, 8/20 µs): 40 kA
- Voltage protection level (Up): 0.74 kV
- Voltage protection level at 5 kA: 0.6 kV
- Response time: 25 ns
- Short-circuit current rating (ISCCR): 50 kA RMS with specified overcurrent protection
- Maximum backup fuse rating: 160 A gL/gG
- Status indication: Visual Healthy/Replace indicator
- Remote signalling: Not included
- Replaceable varistor module: 7P.20.8.150.0015
- Protection rating: IP20
- Operating temperature: −40 to +80 °C
- Mounting type: 35 mm DIN rail (EN 60715)
- Solid conductor cross-section: 1–35 mm²
- Stranded conductor cross-section: 1–25 mm²
- Conductor stripping length: 12 mm
- Terminal tightening torque: 3 Nm
- Applicable standard: EN 61643-11:2012
- EAN: 8012823453408
Reliable Surge Protection for Three-Phase Industrial Electrical Systems
Transient overvoltages can enter industrial electrical installations through incoming power supplies, distribution wiring and switching operations. Surge protection devices such as the Finder 7P.23.8.150.0015 help protect sensitive equipment by providing a controlled path for transient surge currents and limiting excessive voltage levels across protected circuits.
The Finder 7P.23.8.150.0015 is specifically designed for three-phase TN-C systems, where the neutral and protective earth functions are combined within a PEN conductor. Its three varistor protection paths provide surge limitation between each phase conductor and PEN. The replaceable modules and visual condition indicators support preventative maintenance, while the compact DIN rail format enables convenient integration into modern electrical distribution and automation panels.
Typical Applications
- Three-phase TN-C electrical distribution systems.
- Industrial electrical control panels and automation cabinets.
- Manufacturing machinery and production equipment.
- Low-voltage industrial power distribution boards.
- Electrical installations using compatible 120 V AC phase-to-PEN supplies.
- Industrial motor control and machinery distribution systems.
- Electrical infrastructure requiring Type 2 surge protection.
- Commercial and industrial installations with TN-C earthing arrangements.
