Enclosure for a relay module with terminal access
A protective housing for a one- or two-channel relay module that hides live terminals while leaving the screw terminals reachable through a slot and the control pins available on the opposite side. The base has 3 mm standoffs on the module's hole pattern, 2 mm walls and a 14 mm high terminal slot along one long edge that also keeps fingers away from the contacts. The lid screws down with two M3 fasteners and includes a small window above the indicator LED. Print with the open side up for clean cavities.
Relay modules are sold in countless layouts, so SpeakCAD draws the standoffs and slots where your particular board needs them. Preview at no cost in the browser and ask for a DIN rail foot, a strain relief for the mains cable or a taller cavity for the wire loops.
Create an enclosure for a 2-channel relay module 50x38 mm, holes 2.5 mm from corners. Cavity 52x40x22 mm, 2 mm walls, 3 mm standoffs with 2.5 mm holes. 40x14 mm terminal slot on one side, 20x8 mm pin slot opposite, 4 mm LED window, two M3 lid screws.