2SPD Surge Protection Device Inquiry Item

This 2SPD is a two-pole surge protective device, widely installed in low-voltage distribution cabinets and instrument control cabinets. It is used to absorb lightning surge and switching overvoltage on AC power lines, to protect PLC, transmitters, instruments, sensors and other sensitive electronic equipment from surge damage. It adopts zinc oxide varistor core, with fast response speed and large discharge capacity. It comes with thermal disconnection and failure indicator. When the component fails, the indicator changes color to prompt replacement. Standard 35mm DIN rail installation, easy wiring and maintenance. Widely used in petrochemical, water treatment, power plant, metallurgy automation control system.

Specifications

Model: 2SPD Type: Two-pole surge protection device Installation: 35mm DIN rail Nominal discharge current: According to grade Response time: <25ns Failure indication: Visual status indicator Disconnection: Built-in thermal disconnect Certifications: CE Protection grade: IP20

Components & Troubleshooting

Varistor core, thermal separation mechanism, failure indicator window, plastic housing, wiring terminal, spring clip for DIN rail. Common faults: Indicator shows fault, no surge protection, insulation aging, overheating risk caused by continuous overvoltage, loose terminal connection.

Disclaimer

This spare part shall be installed, calibrated and maintained by qualified instrument technicians. Check the indicator status regularly during operation.