Surge protector - overvoltage protection for 2 pairs or 4 signal lines in measuring and control systems, 24 V DC RSP-CL-PT100 2617109

Protection for Measurement and Control Systems

Surge protector RSP-CL-PT100 is a key element protecting sensitive measurement and control systems from the effects of overvoltages. Designed to protect 2 pairs or 4 signal lines, it provides reliable protection in industrial and IT installations, especially where temperature monitoring is required. The device effectively minimizes the risk of damage resulting from sudden voltage spikes, ensuring the continuity of critical processes.

Design and Operation

RSP-CL-PT100 utilizes a two-stage protection circuit based on a spark gap and a TVS diode. This combination ensures a fast and effective response to overvoltages, limiting their impact on protected devices. Therefore, the limitation of transient states is carried out using discharge lamps and zener diodes. The device is adapted for mounting on a DIN rail, which facilitates integration with existing infrastructure. Compliance with UL497 and IEC61643-21 standards (categories D1 / C1 / C2 / C3) confirms its high quality and effectiveness.

Applications and Benefits

This surge protector finds application in a wide range of systems, including current loops (0-20 mA, 4-20 mA), communication interfaces (TTY, TTL, V24/RS232C, RS485/RS422), and high-frequency transmission systems. It is particularly recommended for protecting thermocouples (PT100/PT1000), low-voltage alarm circuits, and DC power supplies. It provides overvoltage protection for two single lines with a common reference potential in a signal / data transmission system with low bandwidth or low data transmission speed.

• Versatility: Protection for various types of signal lines and communication interfaces.
• Effectiveness: Two-stage protection circuit ensures a fast response to overvoltages.
• Easy installation: Adapted for DIN rail mounting.
• Compliance with standards: Meets the requirements of UL497 and IEC61643-21.
• Low power loss: Minimal impact on the operation of protected devices due to appropriate design.

The rated operating voltage is 24 V DC, and the maximum continuous operating voltage is 33 V DC / 23.3 V AC – making it an ideal solution for many industrial and automation applications.