MTL SD32 series Surge Protection Device SPD

The MTL SD32 series Surge Protection Device (SPD) is a high-performance device designed to safeguard electronic equipment and systems from voltage surges.

Here is a detailed introduction to this series of products:

General Characteristics

Wide Voltage Range: The SD32 series is available in multiple voltage ratings, including 7V, 16V, 32V, and 55V, to suit diverse process I/O applications such as thermocouples, 4-20mA instrument loops, shutdown systems, and fire and gas detectors.

High Surge Current Capacity: With a maximum surge current capacity of up to 20KA, it can endure high-energy surges, making it suitable for areas prone to frequent and intense lightning activity.

Low Impedance Design: The low impedance circuit design not only minimizes loop leakage current but also ensures the efficient dissipation of surge currents, thereby enhancing the protection performance.

Compact and Space-Saving: Its ultra-slim design allows for easy installation on a standard DIN rail, facilitating convenient integration into various control cabinets and systems while occupying minimal space.

Technical Parameters

Response Time: The response time is less than 1ns, which means it can quickly respond to voltage surges and start the protection mechanism to minimize the impact on the protected equipment.

Voltage Protection Level: For instance, the SD32 model has a voltage protection level of less than 45V at 1kV/µs and a residual voltage of 60V at 1ns, effectively limiting the transient overvoltage.

Bandwidth: It has a wide bandwidth of 25MHz, which is suitable for protecting communication systems and ensuring the normal operation of high-speed data transmission.

Nominal Current and Series Resistance: The nominal current is 400mA, and the series resistance is 4.2Ω/line, which are important parameters for evaluating the performance of the SPD.