MTL SD55X series Surge Protection Device SPD

The MTL SD55X series Surge Protection Device (SPD) is a sophisticated surge protection solution designed for various industrial and electrical applications. Here is a detailed overview:

Features

High Voltage Rating: With a nominal voltage of 55V, it is suitable for applications that operate at relatively high voltages, providing reliable protection for equipment in such circuits.

Excellent Surge Current Capability: It can handle high - energy surges, typically with a maximum surge current capacity of up to 20kA. This enables it to effectively protect against large - amplitude voltage spikes caused by lightning strikes, power grid switching operations, or other transient events.

Fast Response Time: The SD55X series has a response time of less than 1ns. This extremely fast response allows it to quickly detect and clamp voltage surges, minimizing the potential damage to the protected equipment.

Low Capacitance Design: The low - capacitance design helps to minimize the impact on the signal integrity of the circuits it protects, making it suitable for use in applications where signal quality is critical, such as in communication and data - processing systems.

Compact and Robust Construction: Housed in a compact and durable enclosure, it is designed to withstand harsh industrial environments. The device is suitable for DIN - rail mounting, facilitating easy installation and integration into existing electrical panels and systems.

Technical Specifications

Voltage Protection Level: The voltage protection level is typically less than 80V at 1kV/μs, ensuring effective clamping of overvoltages to a safe level.

Residual Voltage: Under surge conditions, the residual voltage is kept relatively low, for example, around 60V at 1ns, which helps to protect the connected equipment from excessive voltage stress.

Bandwidth: It offers a wide bandwidth, usually up to 25MHz or more, allowing it to handle high - frequency signals without significant attenuation or distortion.

Nominal Current and Series Resistance: The nominal current rating is suitable for typical industrial load requirements, and the series resistance is designed to be low enough to minimize power losses while providing effective surge protection.

Application Scenarios

Industrial Process Control: In industrial settings, it is commonly used to protect process control equipment such as sensors, transmitters, and controllers in 4 - 20mA loops, ensuring the reliable operation of the control system in the presence of electrical disturbances.

Power Distribution Systems: It can be installed in power distribution panels to protect downstream electrical equipment from surges originating from the power grid or internal switching operations. This helps to improve the reliability and lifespan of transformers, circuit breakers, and other power - related components.

Telecommunications and Data Networks: Given its low capacitance and wide bandwidth, the SD55X series is well - suited for protecting telecommunications equipment, including routers, switches, and modems, as well as data - processing equipment in data centers, ensuring the integrity of data transmission and the continuous operation of the network.