An electrical connector assembly including a first connector having a first casing and a plurality of contacts and a second connector having a second casing and a plurality of mating contacts. The first and second connectors are configured to transition between an unassembled condition and an assembled condition to connect the plurality of contacts together with the mating contacts. The second connector supports a connector position assurance (CPA) element. In the unassembled condition, the CPA element abuts against a surface borne by one of connectors, thereby preventing movement of the CPA element relative to the second connector between a safety and an active position. In the assembled condition, the CPA element does not abut against the surface and is movable relative to the second connector between the safety and active positions, so as to connect the mating contact carried by the CPA element with the corresponding contact.