Stackable low-profile electrical contact block

A stackable electrical contact block comprising a housing that delimits its volume, wherein the housing has a top side and an opposite bottom side, wherein the following elements are present within the housing:

• a first and second electrical terminal;
• an actuation pusher adapted to move between a resting position and an actuated position in order to establish or break an electrical contact between the first and second terminals, the actuation pusher having an actuation head, which, in the resting position, protrudes from the housing's top side;
• a clearance below the actuation pusher, when the actuation pusher is in its resting position;
• a return spring biasing the actuation pusher towards its resting position, a bottom end of the return spring extending into the clearance;
• and
• a mobile electrical contact bridge for establishing and breaking the electrical contact between the first and second terminals,
• wherein the contact bridge is accommodated in the actuation pusher,
• wherein the return spring extends through the contact bridge,
• wherein the housing's bottom side is configured as a connection interface with an entrance providing access to the clearance, for connecting the contact block to another component, and
• wherein a central part of the clearance is taken up by the bottom end of the return spring, and a peripheral part of the clearance, which surrounds the central part, is an actuation head receiving space adapted for receiving the actuation head of a component connected to the contact block via the connection interface.