Schneider Electric EIK031 Electrical Interlock Kit

Schneider Electric's Square D EIK031 Electrical Interlock Kit is a field-installable interlock for Square D safety switches, providing 1 normally open and 1 normally closed contact (SPDT) to coordinate the control circuit with the main disconnect. It is designed for switches rated 60 A in the general-duty fusible series F or the heavy-duty series F5/F6, enabling field installation to add interlock capability. By interrupting the control circuit before the main breaker blades move, the EIK031 prevents unsafe simultaneous operation of the main and control circuits, and it is sold as a complete interlock kit for compatible Square D safety switches.