"Disconnect" also belongs to the expression - essentially, a tiny explosive is used to ensure that the safety switch disconnects the battery from the load side,

"Disconnect" also belongs to the expression - essentially, a tiny explosive is used to ensure that the safety switch disconnects the battery from the load side, permanently and without arcing: https://insideevs.com/news/334322/tesla-patents-pyrotechnic-battery-safety-device/ https://insideevs.com/news/334322/tesla-patents-pyrotechnic-...