Finder 7P.21.8.275.1020 Type 2 surge protection device with single-pole varistor protection, 230 V AC nominal voltage, 20 kA nominal discharge current and DIN rail mounting.
£58.25
The Finder 7P.21.8.275.1020 is a compact and reliable Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by induced surges and switching events. As part of the Finder 7P Series, it is suitable for single-phase AC systems and selected DC applications requiring dependable panel-level surge protection.
This surge arrester uses a single varistor protection module to help limit voltage peaks before they can damage connected equipment. Its modular DIN rail design allows straightforward installation inside distribution boards, control panels and switchboards, while the replaceable varistor module supports quick maintenance and reduced downtime.
With a 230 V AC nominal voltage, 275 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 40 kA maximum discharge current, the Finder 7P.21.8.275.1020 is ideal for protecting electrical switchboards, automation panels and sensitive downstream equipment from damaging surge events.
Type 2 surge protection devices are commonly installed in power distribution boards and control panels to limit transient overvoltages caused by switching operations and induced surge events. This helps protect switchgear, power supplies, PLCs, drives, instrumentation and other sensitive electrical equipment.
The Finder 7P.21.8.275.1020 is designed for professional low-voltage installations where compact DIN rail surge protection is required. Its replaceable varistor module and signalling options make it a practical choice for industrial, commercial and OEM electrical panels.
| Manufacturer | Finder |
|---|---|
| Series | 7P Series |
| Model | 7P.21.8.275.1020 |
| Product type | Surge protection device / surge arrester |
| SPD type | Type 2 |
| Number of poles | 1 pole |
| Protection technology | Varistor |
| Nominal voltage | 230 V AC |
| Maximum continuous operating voltage | 275 V AC / 350 V DC |
| Nominal discharge current | 20 kA |
| Maximum discharge current | 40 kA |
| Voltage protection level | ≤ 1.2 kV |
| Maximum backup fuse | 160 A gL/gG |
| Protection rating | IP20 |
| Mounting type | 35 mm DIN rail mounting |
| Dimensions (H × W × D) | approx. 89.8 × 17.5 × 56.9 mm |
| Operating temperature | -40 °C to +80 °C |
| HS Code | 85363030 |
The Finder 7P.21.8.275.1020 is used to protect low-voltage electrical installations and switchboards from transient overvoltages caused by induced surges and switching events.
This product is a Type 2 surge protection device, designed for panel-level protection in low-voltage electrical systems.
The Finder 7P.21.8.275.1020 has a 20 kA nominal discharge current and a 40 kA maximum discharge current.
Yes. The device uses a replaceable varistor module, helping simplify maintenance and reduce downtime.
The surge protection device is designed for 35 mm DIN rail mounting inside electrical distribution boards, switchboards and control panels.
Finder 7P Series surge protection devices are widely used by electrical contractors, panel builders and automation engineers to protect low-voltage installations and sensitive equipment from damaging surge events.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...