BZA51 series Explsion-proof ballast with ATEX&IECEx certificates conformity to EN&IEC standards ... aluminium, powder-coated external surface, rape yellow (RAL1021).5)Choke ballast, rapid starting, stable performance.Selection table Type/OrderingcodeAvailable lampPower(W ... 70W, 100W, 150W, 175W, 250W, 400W Note: HPI European standard ballast is available in generalRated voltage220 ~240V AC 50Hz (60Hz is ...