WF311100 is a heatsink with DIN rail adaptor designed for efficient thermal management of electronic components. It features a thermal resistance of 3K/W in calm air at 20W without ventilation, with dimensions of 80 mm length, 70 mm width, and 47.6 mm height, and includes M4 and M5 mounting holes for flexible installation. The heatsink is equipped with a DIN rail adaptor for secure mounting on standard DIN rails, and its thermal performance can be significantly improved with forced ventilation. This product is ideal for applications requiring reliable heat dissipation in industrial control systems, power electronics, and relay modules where space-constrained mounting on DIN rails is necessary.