Why Choose the Finder 7P.21.8.150.1015 Type 2 Surge Protection Device?
The Finder 7P.21.8.150.1015 is a compact, single-pole Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by switching operations and induced lightning surges. Part of the Finder 7P Series, this surge arrester uses metal oxide varistor (MOV) technology to help limit potentially damaging voltage spikes affecting electrical and electronic equipment.
Featuring a 150 V AC maximum continuous operating voltage (Uc), a 15 kA nominal discharge current (In) and a 40 kA maximum discharge current (Imax), the Finder 7P.21.8.150.1015 provides effective Type 2 surge protection for appropriately rated low-voltage AC applications. Its single-pole configuration makes it suitable for use within compatible protection arrangements where individual conductors require surge protection.
This model includes an integrated remote signalling changeover contact (SPDT), allowing the condition of the protective element to be monitored by compatible alarm or supervisory equipment. A visual status indicator provides local confirmation of the varistor's condition, while the replaceable protection cartridge simplifies maintenance. With a compact 17.5 mm DIN rail profile, IP20 protection and a wide operating temperature range, it is well suited to professional electrical distribution and industrial control applications.
Key Advantages
- Type 2 surge protection: Helps protect electrical equipment against induced lightning surges and switching overvoltages.
- 15 kA nominal discharge current: Provides dependable surge current handling using the standard 8/20 µs waveform.
- 40 kA maximum discharge current: Offers substantial transient surge handling capability.
- 150 V AC maximum continuous operating voltage: Supports appropriately rated low-voltage AC circuits.
- Single-pole configuration: Provides flexible integration into suitable electrical protection arrangements.
- Metal oxide varistor technology: Helps limit transient overvoltages across protected conductors.
- Remote signalling contact: Enables monitoring of the SPD's protection status through external equipment.
- Visual condition indicator: Allows quick inspection of the protective cartridge.
- Replaceable varistor module: Supports efficient maintenance without replacing the complete SPD assembly.
- Compact 17.5 mm width: Conserves space in electrical distribution boards and control panels.
- Standard DIN rail mounting: Simplifies installation in compatible electrical enclosures.
- Wide operating temperature range: Supports demanding industrial environments.
- Finder 7P Series construction: Provides a practical surge protection solution for professional electrical installations.
Key Features
- Finder 7P Series surge protection device.
- Type 2 surge arrester.
- Single-pole protection arrangement.
- Metal oxide varistor (MOV) protection technology.
- Maximum continuous operating voltage (Uc): 150 V AC.
- Nominal discharge current (In): 15 kA, 8/20 µs.
- Maximum discharge current (Imax): 40 kA, 8/20 µs.
- Integrated remote signalling via one SPDT changeover contact.
- Visual indicator showing the condition of the varistor.
- Replaceable protective cartridge.
- Compatible with the Finder 07P.01 remote signalling connector arrangement.
- Single-module DIN rail construction.
- Standard 35 mm DIN rail mounting.
- Module width: 17.5 mm.
- Ingress protection: IP20.
- Operating temperature: −40 to +80 °C.
- Designed for installation at suitable lightning protection zone boundaries.
- Compliant with the EN 61643-11 Type 2 surge protection standard.
Technical Specifications
- Manufacturer: Finder
- Series: 7P Series
- Product family: 7P.21
- Model: 7P.21.8.150.1015
- Product type: Type 2 surge protection device
- Protection technology: Metal oxide varistor (MOV)
- Number of poles: 1
- SPD classification: Type 2
- Nominal application voltage: 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
- Remote signalling: Yes
- Remote signalling contact: 1 changeover contact (SPDT)
- Remote connector system: Finder 07P.01
- Local status indication: Visual varistor condition indicator
- Protective element: Replaceable varistor cartridge
- Mounting: 35 mm DIN rail, EN 60715
- Module width: 17.5 mm
- Modular size: 1 module
- Ingress protection: IP20
- Operating temperature: −40 to +80 °C
- Installation environment: Protected electrical enclosure
- Relevant standard: EN 61643-11:2012
- EAN: 8012823453583
Reliable Type 2 Surge Protection with Remote Status Monitoring
Industrial and commercial electrical installations can experience transient overvoltages caused by switching operations, inductive loads and lightning-induced disturbances. These short-duration voltage spikes can place considerable stress on electrical insulation, power supplies, electronic controllers and other connected equipment. The Finder 7P.21.8.150.1015 helps reduce these risks by providing a controlled surge current path through its metal oxide varistor protection element.
As a Type 2 SPD, the device is intended for protection against transient surge currents rather than the direct lightning-current duty associated with Type 1 SPDs. Its 15 kA nominal discharge current and 40 kA maximum discharge current provide defined surge-handling characteristics for suitable electrical installations. The 150 V AC Uc rating must be matched to the operating voltage of the protected circuit.
The integrated remote signalling changeover contact is particularly valuable where the surge protector is installed in an electrical cabinet that is not routinely inspected. By connecting the auxiliary contact to a compatible alarm system, PLC input or building management system, maintenance personnel can monitor the condition of the protective element. The local visual indicator provides an additional method for identifying when the varistor cartridge requires replacement.
The replaceable varistor module helps simplify ongoing maintenance, while the narrow DIN rail construction supports installation in space-constrained control panels and distribution boards. For effective surge protection, the SPD must be installed with appropriate upstream protection, suitable earthing and short connection conductors in accordance with Finder's installation instructions and applicable electrical regulations.
Typical Applications
- Low-voltage AC electrical distribution systems.
- Industrial control panels and automation cabinets.
- Electrical equipment operating on appropriately rated 120 V AC circuits.
- Commercial building electrical protection systems.
- Industrial machinery control circuits.
- Power supply and electronic control equipment protection.
- Distribution boards requiring single-pole Type 2 surge protection.
- Electrical installations requiring remote SPD condition monitoring.
- PLC and supervisory monitoring systems.
- Building management and facilities electrical infrastructure.
- Protection arrangements at suitable lightning protection zone boundaries.
- Maintenance and upgrading of existing electrical surge protection systems.
