Locking device driven by an electric motor

An electric motor driven locking device of a plug connector half for establishing an electrical connection to another plug connector half in order to charge an electric vehicle or a hybrid vehicle by plugging the another plug connector half into the plug connector half, the locking device comprising:

• a housing with an electrical component carrier,
• a movable locking pin movable relative to the housing for locking in the another plug connector half plugged into the plug connector half,
• a sensor element that is arranged on the locking pin and is configured as a conductor track structure including resilient contact tabs, an electrical contact being established between the electrical component carrier and the conductor track structure by the resilient contact tabs, wherein the movable locking pin is movable between a first position where the resilient contact tabs are spaced from the electrical component carrier and a second position where the resilient contact tabs engage the electrical component carrier, and
• a protection for protecting the contact tabs that is provided at least in a region of the contact tabs, wherein the protection extends around a portion of the resilient contact tabs.