DC Surge Protection Device SINOTIMER OBS-41

• Type: DC Surge Protective Device (SPD)
• Protection Category: Type 2 (T2)
• Rated DC Voltage (Uc): 500 V DC
• Nominal Discharge Current (In): 20 kA (8/20 µs)
• Maximum Discharge Current (Imax): 40 kA (8/20 µs)
• Protection Level (Up): 3.8 kV
• Compliance Standard: IEC 61643-1

The DC Surge Protector SINOTIMER OBS-41 is a device designed for direct current circuits, which limits temporary overvoltages caused by indirect lightning strikes or switching operations in electrical networks. It protects connected equipment by diverting the surges to the grounding system.

The device features a visual status indicator visible on the front of each unit. The green color indicates normal operation and active protection, while a color change signals internal component wear and the need to replace the unit.

Installation is done on 35 mm DIN rails and requires direct connection to the grounding busbar of the installation. It is recommended to install it as close as possible to the protected equipment and using the shortest possible grounding conductors.