Surge Protection Devices: What Buyers Need to Specify

Specify the installation position

Surge protective devices help limit transient overvoltages. Their selection depends on where they sit in the installation and how they coordinate with other protection. Identify whether the enquiry concerns the incoming supply, a distribution board or equipment-level protection. A device selected for one position is not automatically a complete solution for the site.

Identify the electrical system

Provide nominal voltage, AC/DC duty, earthing arrangement and required number of poles. State the specified SPD type and relevant manufacturer parameters. These details matter more than choosing the largest single current figure in a catalog. The project designer should confirm the required coordination and connection arrangement.

Include backup protection and indication

Ask whether the specified reference includes its required backup protection or relies on an external device. List remote signaling contacts and monitoring requirements. For modular systems, distinguish a replacement cartridge from the complete base-and-cartridge assembly.

Maintenance purchasing

An indicator status can prompt a maintenance enquiry, but the replacement must still match the original assembly. Send base and cartridge references together with photographs. Record spares separately from complete new installations so the quotation contains the right parts.

RFQ essentials

Supply exact SKU, quantity, system voltage, earthing arrangement, specified SPD type, signaling needs and destination. Use manufacturer installation instructions for final installation requirements and have the site technical team confirm suitability.

Explore catalog references

Examples for product research; suitability and availability must be confirmed for your project.

• Schneider Electric 16314 — cartridge C1 Master-350 for surge arrester PRD1 Master
• Schneider Electric A9L08501 — iPRD8r modular surge arrester - 1P + N - 350V - with remote transfert
• Schneider Electric EZ9L33720 — Easy9 surge arrester - 3P + N - 400 V - 20000 A

Manufacturer references

• Schneider Electric documentation: 16314
• Schneider Electric documentation: A9L08501
• Schneider Electric documentation: EZ9L33720
• Schneider Electric Electrical Installation Guide

These AI-assisted purchasing guides use manufacturer references and catalog data. They are not installation instructions or a substitute for project-specific engineering approval.