Multilevel dc-link (MLDCL) is a popular modular redundant reduced switch count (RSC) topology, which has the potential ability to serve as promising substitute solution to cascade H-bridge (CHB) multilevel inverter (MLI) for various active front and energy applications. Motivated by the topological features and adequate redundancies of MLDCL, this aims to present carry out critical investigation on the fault tolerant ability of MLDCL for OC switch fault(s). Further, to investigate the merit of switching redundancies in achieving stiff control of dc-link voltages, implementation of MLDCL for the application of three-phase active front end with voltage-oriented control (VOC) is considered, and its performance for dynamic variation in reference variable and open circuit (OC) switch faults is demonstrated. The desired fault tolerant operation (FTO) is obtained imposing by generalized neutral shifting (NS) zero-sequence injection FTS followed with reduced carrier rotation pulse-width modulation (PWM) scheme. To validate the dynamic fault performance of the developed three-phase active rectifier with 15-level MLDCL RSC, its ability to track dynamic variations in reference variable and with stand simultaneous failure of multiple switches on one or more phases, is demonstrated.