A stackable electrical contact block (100) comprising a housing (102), the housing (102) having a top and bottom side and accommodating a first (108) and second (110) electrical terminal, an actuation pusher (112) adapted to move from a resting position (Pr) to an actuated position to break the contact between the first and second terminals (108, 110), the actuation pusher (112) having a head (130) protruding from the top side, a clearance below the actuation pusher, and a return spring (114) biasing the actuation pusher (112) towards its resting position, a bottom end of the return spring extending into the clearance.
The housing's bottom side is a connection interface with an entrance (128) providing access to the clearance.
A central part of the clearance is taken up by the bottom end of the return spring (114), and a peripheral part is a space for receiving the actuation head of a component connected to the contact block (100) via the connection interface.