The infobox template in this article is missing some required data. You can help Nukapedia by filling it in.
The fusion pulse charge is a quest item in Fallout 4. It is used to sabotage the Institute's main reactor and create a nuclear explosion, completely destroying the facility and surrounding area of the city.
The charge is a small metal box with a lot of wires and a radiation danger symbol on the exterior. It is used to detonate nuclear devices such as reactors and atomic bombs as seen in previous Fallout games.