A squib for bus connection includes a communication and ignition unit which is connected via a pin to a bus line and is received within an inner cap, along with a quantity of a first explosive which does not emit corrosive gas. Furthermore, between this inner cap and an outer cap in which it is received, there is charged a quantity of a second explosive which is of a different type from the first explosive, the second explosive being of a type which is used in a squib in a conventional inflator.