External-Mount Heat Sink for 40A SSR (Square)

This is a short and high profile heatsink made of anodized aluminum alloy. This external mount heat sink is for dissipating the heat from 25A or 40A single phase SSR. The SSR and its wiring will stay inside the box. The advantage of using a external mounting is that there is no need for venting hole or cooling fan in the controller box.  Mounting screws and heat conductive grease are included.

Dimension:  100 x 100 x 50 mm (4" x 4" x 2").
Mounting Holes: 5 mm diameter on four corners with 84 mm spacing
Mounting Screws: 6 x M4
User will need to cut a 70 x 55 mm (2.75" x 2.2") rectangular hole for the SSR.
Thermal Resistance 1.45 ºC/W.

SSR Mounted to the Heatsink

Mounting cutout

Example that shows how the heat sink can be mounted.