This is the second phase of the program for design and development of an energy interruptor which permits power to the firing circuit only after specific conditions are met. The interruptor uses a split-phase transformer as a basic energy interruption component. The input to the transformer is controlled by a control circuit comprising of an accelerometer, a/d convertor and a microprocessor which provides the transformer with a signal of predetermined nature. The system also consists of two electrochemical inertia switches which are driven by the post-launch acceleration. The system meets the requirements of mil-std-1316c. It is a design which combines the state-of-the-art electronics and mechanical locking features required by mil-std-1316c. During the second phase, the device will be designed, fabricated and tested for performance under the specification provided by naval weapon center. At the end of the program, five prototype units will be submitted to NWC for further testing.