A design scheme for a bandpass micro inertial switch was proposed. Its bandpass characteristic allows it to resist high amplitude impacts through the filter, and the mass-spring system can resist low amplitude impacts. Only suitable workloads can cause the proof mass to engage the latch and lock. Moreover, taking into account processing and operational challenges, a new structure of micro inertial switch was designed. A dynamic model incorporating both the filter and the single degree of freedom mass-spring system was developed to comprehensively analyze the switch’s performance. This dynamic model allows for the determination of the upper and lower cutoff thresholds, which represent the maximum and minimum impact amplitudes that can be blocked by the inertial switch. Furthermore, a simulation model was constructed using the finite element method to verify the theoretical results. The simulation results closely matched the theoretically calculated cutoff thresholds, confirming the accuracy of the design model.