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Surge Protection device (SPD) - FINDER
Surge Protection Devices (SPDs), also known as transient voltage surge suppressors (TVSS) or lightning arrestors, are critical components for safeguarding electrical and electronic installations against voltage spikes caused by lightning strikes, switching operations, or grid disturbances. These devices are designed to clamp overvoltages to safe...
Surge Protection Devices (SPDs), also known as transient voltage surge suppressors (TVSS) or lightning arrestors, are critical components for safeguarding electrical and electronic installations against voltage spikes caused by lightning strikes, switching operations, or grid disturbances. These devices are designed to clamp overvoltages to safe levels by diverting surge current to ground, protecting sensitive equipment like PLCs, drives, and communication systems. Finder offers a comprehensive range of SPDs, typically rated for nominal discharge currents (In) of 5 kA to 20 kA and maximum discharge currents (Imax) up to 40 kA, with voltage protection levels (Up) as low as 1.2 kV. They are available in Type 1, Type 2, and Type 3 configurations, suitable for main distribution boards, sub-distribution panels, and terminal equipment protection. Key technical parameters include rated voltage (Uc) from 230 V to 400 V AC, response times under 25 ns, and compliance with IEC 61643-11 standards. Finder SPDs often feature thermal disconnection and remote signaling contacts for integration into building management systems.
These SPDs are deployed across diverse sectors, including industrial automation, commercial buildings, renewable energy systems (photovoltaic and wind), telecommunications, and residential installations. In industrial environments, they protect variable frequency drives (VFDs), motor control centers (MCCs), and SCADA systems from transient overvoltages. In commercial settings, they safeguard HVAC controls, lighting systems, and security networks. For photovoltaic installations, dedicated DC SPDs are used to protect inverters and solar panels from lightning-induced surges. Finder SPDs are designed for DIN-rail mounting in electrical enclosures, making them ideal for integration into existing switchgear and distribution boards.
The Finder SPD category includes several subcategories and key article codes. Notable series include the 7P.0 series (Type 2, single-pole, 20 kA Imax), the 7P.1 series (Type 1+2, 4-pole, 25 kA Imax), and the 7P.2 series (Type 3, for terminal equipment). Article codes typically follow the pattern 7P.0.xxx.xxxx, where the first digits indicate the series and poles (e.g., 7P.0.230.xxxx for a 230 V single-pole device). Other relevant codes include 7P.1.400.xxxx for three-phase Type 1+2 SPDs and 7P.2.230.xxxx for Type 3 protectors. These devices are available with optional remote signaling contacts (e.g., 7P.0.230.xxxx.1) for monitoring status via a PLC or building automation system.
Partnering with Electric Automation Network ensures access to genuine Finder SPDs with real-time pricing, technical documentation including datasheets and wiring diagrams, and expert support from our team of electrical engineers. We offer express worldwide shipping, ensuring minimal downtime for your projects. Our engineers provide personalized assistance for selecting the correct SPD type, calculating surge current requirements, and integrating protection into your existing system. Benefit from competitive discounts of up to 65% off list prices, making high-quality surge protection accessible for any budget.
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