Why Choose the Finder 7P.21.8.130.1015 Type 2 Surge Protection Device?
The Finder 7P.21.8.130.1015 is a single-pole Type 2 surge protection device (SPD) designed to protect low-voltage AC and DC electrical installations against transient overvoltages. Part of the Finder Series 7P surge protection range, this DIN rail-mounted surge arrester uses metal oxide varistor technology to help protect industrial control equipment, power supplies and sensitive electronic systems from voltage surges caused by switching operations and induced lightning disturbances.
Designed for low-voltage electrical systems, the Finder 7P.21.8.130.1015 features a 130 V AC / 170 V DC maximum continuous operating voltage, a 15 kA nominal discharge current (In) and a 40 kA maximum discharge current (Imax). Its 0.6 kV voltage protection level (Up) helps limit transient voltages reaching connected electrical equipment when the SPD is correctly selected and installed.
The device combines a replaceable varistor protection cartridge, an integrated visual status indicator and a remote signalling changeover contact for monitoring the condition of the protective element. Its compact 17.5 mm DIN rail format, IP20 protection rating and wide operating temperature range make it a practical solution for industrial automation panels, electrical distribution boards and low-voltage power systems.
Key Advantages
- Type 2 surge protection helps protect electrical equipment against induced lightning surges and switching transients.
- Single-pole configuration suitable for designated low-voltage AC and DC installations.
- 15 kA nominal discharge current provides robust surge-handling capability.
- 40 kA maximum discharge current supports protection against higher-energy transient events.
- 0.6 kV voltage protection level helps reduce the surge voltage reaching connected equipment.
- 130 V AC / 170 V DC maximum continuous operating voltage for compatible electrical systems.
- Replaceable varistor module simplifies maintenance without requiring replacement of the complete SPD base.
- Visual protection status indicator allows straightforward inspection of the varistor condition.
- Integrated remote signalling contact enables monitoring through a suitable external alarm or control system.
- Compact 17.5 mm module width saves valuable space inside electrical panels.
- 35 mm DIN rail mounting supports straightforward installation in standard electrical enclosures.
- −40 to +80 °C operating temperature range supports demanding industrial environments.
Key Features
- Finder Series 7P surge protection device.
- 7P.21 single-pole Type 2 SPD configuration.
- Metal oxide varistor (MOV) protection technology.
- Suitable for compatible low-voltage AC and DC systems.
- 130 V AC maximum continuous operating voltage (Uc).
- 170 V DC maximum continuous operating voltage (Uc).
- 15 kA nominal discharge current (In) using an 8/20 µs waveform.
- 40 kA maximum discharge current (Imax) using an 8/20 µs waveform.
- 0.6 kV voltage protection level (Up).
- Replaceable varistor cartridge for convenient servicing.
- Optical status indication showing whether the protection element is serviceable or requires replacement.
- SPDT remote signalling contact for external monitoring.
- Single-module DIN rail construction.
- 35 mm DIN rail mounting in accordance with EN 60715.
- 17.5 mm nominal module width.
- IP20 ingress protection rating.
- −40 to +80 °C ambient operating temperature range.
- 50 kA short-circuit current rating (Isccr) under specified installation conditions.
- IEC/EN 61643-11 surge protection device standard.
- Suitable for installation at the LPZ 1 / LPZ 2 boundary within a coordinated lightning protection system.
Technical Specifications
- Manufacturer: Finder
- Series: 7P Surge Protection Devices
- Model: 7P.21.8.130.1015
- Product type: Type 2 surge protection device
- SPD classification: Type 2
- Number of poles: 1
- Protection technology: Metal oxide varistor (MOV)
- Nominal AC system voltage: 110 V AC
- Nominal DC system voltage: 125 V DC
- Maximum continuous operating voltage (Uc), AC: 130 V AC
- Maximum continuous operating voltage (Uc), DC: 170 V DC
- Nominal discharge current (In): 15 kA (8/20 µs)
- Maximum discharge current (Imax): 40 kA (8/20 µs)
- Voltage protection level (Up): 0.6 kV
- Short-circuit current rating (Isccr): 50 kA
- Protection element: Replaceable varistor cartridge
- Local status indication: Optical protection status indicator
- Remote signalling: Yes
- Remote signalling contact type: SPDT changeover contact
- Mounting method: DIN rail
- DIN rail size: 35 mm
- DIN rail standard: EN 60715
- Module width: 17.5 mm nominal
- Installation space: 1 modular spacing unit
- Ingress protection: IP20
- Operating temperature: −40 to +80 °C
- Applicable standard: IEC/EN 61643-11
- Typical installation location: LPZ 1 / LPZ 2 boundary or higher protection zone
- EAN / GTIN: 8012823378527
Reliable Type 2 Surge Protection for Low-Voltage AC and DC Systems
Industrial automation equipment, instrumentation systems and electronic control circuits can be vulnerable to transient overvoltages generated by switching operations, inductive loads and lightning-related disturbances. Even short-duration voltage spikes can damage power supplies, programmable logic controllers and sensitive electronic components. A correctly specified Type 2 surge protection device helps limit these overvoltages and reduce the likelihood of equipment damage.
The Finder 7P.21.8.130.1015 is designed specifically for suitable lower-voltage AC and DC electrical systems. Its 130 V AC / 170 V DC maximum continuous operating voltage makes it appropriate for designated installations where a conventional SPD intended for 230 V AC mains circuits would not provide the required voltage characteristics.
The device uses metal oxide varistor technology, which responds to a transient overvoltage by becoming conductive and diverting surge current through the intended protective path. Its 15 kA nominal discharge current, 40 kA maximum discharge current and 0.6 kV voltage protection level provide defined surge protection characteristics for correctly designed low-voltage installations.
A key benefit of the Finder 7P.21.8.130.1015 is its replaceable varistor cartridge. The integrated visual indicator enables maintenance personnel to check the condition of the protection element, while the remote signalling changeover contact allows the SPD status to be incorporated into a suitable monitoring or alarm system. This is particularly useful in industrial installations where electrical equipment may operate continuously or be located in unattended cabinets.
The device mounts directly onto a standard 35 mm DIN rail and occupies approximately 17.5 mm of panel width. For effective protection, the SPD must be correctly coordinated with the electrical supply, earthing arrangement, upstream protective devices and any other surge protection stages. Installation should be undertaken by a qualified electrical professional in accordance with Finder's instructions and applicable electrical installation regulations.
Typical Applications
- Low-voltage AC and DC electrical distribution systems.
- Industrial automation and PLC control cabinets.
- Electrical control panels and machine control systems.
- Compatible 110 V AC control circuits.
- Compatible 125 V DC electrical systems.
- Industrial instrumentation and monitoring equipment.
- Electronic control power supplies.
- Motor control and manufacturing equipment control panels.
- Industrial building services and electrical infrastructure.
- Electrical installations exposed to induced lightning surges.
- Systems requiring remote indication of surge protection status.
- DIN rail-mounted surge protection in compact electrical enclosures.
