NNC 55-0396 is primarily used in research settings to study calcium channel activity, particularly T-type calcium channels. Its application is significant in understanding cellular processes related to these channels, such as neuronal signaling and muscle contraction. Researchers utilize it to investigate potential therapeutic targets for conditions like epilepsy, chronic pain, and cardiovascular disorders. The compound's ability to selectively inhibit T-type calcium channels makes it a valuable tool for exploring their role in various physiological and pathological mechanisms.