In this paper the authors summarize the results of a parametric study devoted to evaluate, using static nonlinear analyses (pushover), the seismic behavior of low to medium rise regular reinforced concrete moment-resisting frames (RC-MRFs) with hysteretic energy dissipation devices mounted on chevron steel bracing. Frame models ranged from 5 to 25 stories were designed using different elastic stiffness ratios (alpha) between the moment frame system and the whole structure (frame-bracing-hysteretic device system). Also, different elastic stiffness balances (beta) between the hysteretic device and the supporting braces were considered. Post to pre yielding stiffness ratios (k2 /k1) of 0.0 (elastic-perfectly plastic), 0.03 and 0.05 for the hysteretic devices were considered. Two angles of inclination of the chevron braces with respect to the horizontal axis (theta) were considered: 40 and 45 degrees, taking into account typical story heights and bay widths used in Mexican practice. From the results obtained in this study, optimal stiffness balances for alpha and beta are defined to achieve a suitable mechanism where the hysteretic devices yield first and develop their maximum local displacement ductility mu, whereas in the moment frame incipient yielding is only formed at the beam ends. Finally, additional comments are made with respect to: (a) relations between global ductility capacity and local displacement ductility capacity for the hysteretic devices for a given combination of alpha, beta, k2/k1 and theta, (c) story drifts at yielding and their relation with the selected alpha balance and, (d) overstrength factors (omega) for design purposes.