Module carrier in the field of secondary explosion protection

A module carrier for use in a potentially explosive atmosphere in a form of gas or dust, comprising:

• a housing configured for receiving a module having a pushbutton, the housing including two lateral cage elements between which the module is selectively inserted, the module being switchable between a live state and a non-live state via the pushbutton, the pushbutton being arranged to switch an intrinsically safe release circuit, which is mounted on and switches the module to the live state or the non-live state;
• wherein the module carrier further comprises a selectively detachable locking cap with one or more fasteners configured to lock with at least one of the lateral cage elements and secure the module within the housing, a module cap positioned over the module wherein, when the locking cap is positioned over the module cap and locked to the housing, the pushbutton and the module cap are inaccessible until the locking cap is removed from the housing;
• wherein the locking cap has an actuating device extending through an opening in the module cap for actuating the pushbutton when the locking cap is attached to the housing;
• and
• wherein in an unactuated state of the pushbutton, the locking cap is detached from the housing and the module is switched to the non-live state, and wherein the pushbutton is actuatable to switch the module to the live state only by attaching the locking cap to the housing in a locked-in-place state so that the actuating device engages the pushbutton.