... BZA51 series Explsion-proof ballast with ATEX&IECEx certificates conformity to EN&IEC standards BAZ51 Series Explosion-proof Ballast1)Explosion protection to - ... with compensation capacitor. Technical data Explosion-proof ballasts BAZ51-Explosion protection Gas explosion protectionEx II 2 G Ex d ... sodium lamp (HSE): 70W, 100W, 150W, 250W, 400W High pressure mercury lamp (HME): 80W, 125W, 175W, 250W, ...