Fight fire at its source
A glass ampoule the size of a fine-wire fuse, filled with highly effective fire extinguishing agents - this is basically the E-Bulb. When the predetermined temperature is reached, the glass ampoule bursts and the 3M NOVEC is released. The fire is thus extinguished at an early stage and the power supply is simultaneously disconnected.
Extinguishing agent 3M NOVEC
The choice of the appropriate extinguishing agent varies from case to case. However, especially in the case of fires caused by or on electrical components, the use of conductive extinguishing media can cause additional dangers. This threat is not present if 3M NOVEC is used. It is completely non-conductive, has no corrosive effect and evaporates completely after use leaving no residue. These properties make it so valuable that it is also used in large-scale fire extinguishing systems in data centres.
The E-Bulb works in several ways. On the one hand, the fire is suffocated in seconds by the cooling effect of the fire extinguishing agent as it spreads and by the displacement of the oxygen. On the other hand, the glass ampoule bursts with little shattering and the resulting interruption of the circuit prevents reignition, as no further electrical energy can be supplied to the system.