According to an aspect, a perforating gun assembly and a detonator assembly is provided. The detonator assembly includes at least a shell, selective detonation, and more than one electrically contactable component that is configured for being electrically contactably received by the perforating gun assembly without using a wired electrical connection, but rather forms the electrical connection merely by contact with at least one of the more than one electrically contactable components. A method of assembling the perforating gun assembly including the detonator assembly is also provided.