24V DC Signal Surge Protective Device (ZR-24V)

Our ZR-24V SPD is engineered to protect 24V DC signal and control circuits from transient overvoltages caused by lightning induction, electrostatic discharge, or grid switching operations. It features an intelligent protection design that quickly clamps surge voltages to ≤60V, while maintaining ultra-low insertion loss to preserve signal integrity for high-transmission applications.

Housed in a slim, modular DIN-rail form factor, this SPD is easy to install in control cabinets and integrates seamlessly with 24V DC systems (e.g., RS485, analog sensors, PLC I/O, and security devices). Its robust design ensures stable performance under repeated surge events, with clear terminal labeling (IN/OUT/PE) for straightforward wiring and maintenance. As a critical component of industrial and building automation systems, it acts as a dedicated defense layer for low-voltage signal circuits, preventing equipment downtime and component failure.

Key Features

· 24V DC Specialized Protection: Optimized for 24V DC low-voltage signal and control circuits, with a maximum continuous operating voltage (Uc) of 30V.

· Strong Surge Capacity: Nominal discharge current (In) of 5kA and maximum surge current (Imax) of 10kA, capable of handling repeated lightning and surge events.

· Precise Voltage Clamping: Limits residual voltage (Up) to ≤60V, ensuring sensitive electronic components are protected from overvoltage damage.

· High Transmission & Low Loss: Ultra-low insertion loss design, preserving signal integrity for high-speed data and control transmission.

· Intelligent Protection: Fast response to transient surges, with stable performance and no impact on normal circuit operation.

· Compact DIN-Rail Mount: Slim, modular housing for easy installation in control cabinets, saving space and simplifying system integration.

· Clear Wiring Identification: Standardized IN/OUT/PE terminals for quick and error-free installation.

· Industrial Automation: Protects PLCs, DCS systems, 24V DC sensors, and I/O modules from surge damage.

· Building Control Systems: Safeguards access control, fire alarm, and HVAC control circuits.

· Security & Surveillance: Shields 24V DC CCTV cameras, access control readers, and alarm systems.

· Instrumentation & Measurement: Protects pressure, temperature, and flow sensors with 24V DC signal interfaces.

· Telecom & Data Networks: Guards 24V DC communication lines and serial port devices (e.g., RS485/RS232).

· Renewable Energy Systems: Complements solar and wind power monitoring systems with 24V DC signal protection.