Data Line Surge Protection Device

A Data Line SPD is installed on communication lines to safeguard sensitive electronic equipment from surge damage. It protects networks and control systems using protocols such as Ethernet, RS-485, RS-232, telephone, and industrial communication buses without significantly affecting signal transmission.

These devices are widely used in building automation, CCTV systems, industrial control systems, telecommunications, and networking infrastructure.

Key Features

• Protects communication and signal lines
• Fast response time
• Low insertion loss
• High surge discharge capacity
• Compact DIN rail or inline installation
• Supports multiple communication protocols
• Easy replacement
• Reliable long-term protection

Common Applications

• Ethernet Networks
• Building Management Systems (BMS)
• CCTV Systems
• Fire Alarm Systems
• PLC & SCADA Networks
• RS-485 Communication
• Telephone Lines
• Industrial Automation
• Data Centers

Common Types

• Ethernet (RJ45) SPD
• RS-485 SPD
• RS-232 SPD
• Telephone Line SPD
• Signal Line SPD

Typical Specifications

• Rated Voltage: Protocol dependent
• Interface: RJ45, RJ11, Terminal Block, DB9
• Response Time: <1 ns
• Mounting: DIN Rail or Inline
• Standards: IEC 61643-21