The Tridonic EM 33A Basic is an emergency lighting supply unit for linear and compact fluorescent lamps from 10 to 18 Watts. Properties of Tridonic EM Basic Ballasts: - 3 hour rated duration - Can be used with all electronic ballasts, both dimmable and non-dimmable - Suitable for use in combination with magnetic ballasts - 5 pole technology 4 pole lamp changeover and delayed power switching to the ballast - Optimised AC output voltage for TC-DD and TC-L lamps - Optimised DC output for T8 lamps - Green charge status display LED - Checking the emergency lighting function by interruption the unswitched phase - Optional test switch - Battery connection - Polarity reversal protection for battery
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