SD55R Industrial Surge Protection Device with 20kA Surge Current Capacity DIN Rail Mounted and 50 MHz Bandwidth

The SD55R is a high-performance surge protection device (SPD) designed to safeguard sensitive electronic equipment and control systems from damaging voltage transients and surges. Manufactured by leading brands including MTL and Weidmuller, this DIN-rail mounted protector is the ideal solution for industrial automation, process control, and communication systems where reliability is critical.

With a compact ultra-slim design, the SD55R delivers multistage hybrid protection circuitry, ensuring your valuable assets remain operational even in harsh electrical environments.

• High Surge Current Capacity: Handles maximum surge currents up to 20kA (8/20 µs waveform), providing robust protection against lightning strikes and power grid fluctuations.
• Fast Response Time: Responds to overvoltage events in less than 1 nanosecond, clamping transients before they can damage downstream equipment.
• High Bandwidth (50 MHz): Features a wide bandwidth design, making it suitable for high-frequency signal lines without signal degradation.
• DIN Rail Mounting: Engineered for standard top-hat rail (DIN rail) and G-rail installation, allowing for quick integration into existing electrical cabinets with minimal space usage.
• ATEX Certified: Available with intrinsically safe certification for use in potentially explosive atmospheres (specific variants).
• 10-Year Product Warranty: Backed by industry-leading reliability and manufacturer warranty.

The SD55R is specifically designed to protect critical components in various sectors:

• Industrial Automation: Protects PLCs, DCS systems, sensors, and actuators from inductive load switching transients.
• Process Control (I/O): Safeguards 2-wire and 3-wire transmitters, RTDs, and field wiring in refineries and chemical plants.
• Telecommunications: Ensures signal integrity for communication equipment, servers, and data lines operating at high frequencies.
• Power Generation: Shields substation relays and monitoring equipment from lightning-induced surges.

Unlike standard surge protectors that degrade signal quality, the SD55R's low capacitance and high-bandwidth design ensures that your data or control signals pass through unaffected until a surge occurs. Its ultra-slim footprint allows for high packing density on the DIN rail, saving valuable cabinet space.

• Part Number: SD55R
• Alternative Cross-References: MTL SD55R, Weidmuller SD55R
• Packaging: Single unit (1 piece minimum order quantity)
• Shipping: In-stock items ready for immediate dispatch via DHL, FedEx, UPS, or TNT (2-5 days delivery)