A flameproof enclosure’s effectiveness stems from its ability to contain flames within, pat tad, ja elektroiekārtas korpusā notiek sprādziens. Šis ierobežojums tiek nodrošināts, neļaujot liesmām izkļūt caur dažādām savienojuma virsmām.
Īpašu standartu ievērošana attiecībā uz plaisu, garums, and surface roughness of these joints is crucial. These gaps not only extinguish the flames but also cool them effectively. They reduce the temperature of the flames passing through to a level insufficient for igniting any sprādzienbīstams mixtures that may be present outside the enclosure.