Electronic Ballast, suitable for use with the luminaires of protection class I and protection class II and emergency lighting systems as per EN 50172. It offers large temperature range, intelligent voltage guard, constant luminous flux irrespective of fluctuations in mains voltage, for luminaires of protection class I and protection class II, automatic start after replacement of defective lamps. It also offers safety shutdown of defective lamps and at end of lamp life, insulation displacement connection (IDC) terminal for rapid automatic or manual wiring and for emergency lighting systems as per EN 50172.