The tridonic pca 1x26 57 tc eco is a high frequency dimmable ballast to run 1 x 40w t5 circular lamp 1 x 26w double turn compact fluorescent lamp 1 x 26w triple turn compact fluorescent lamp 1 x 40w long single turn compact fluorescent lamp 1 x 40w t5 circular fluorescent lamp 1 x 32w triple compact fluorescent lamp 1 x 42w triple turn compact fluorescent lamp 1 x 57w triple turn compact fluorescent lamp tridonic part number 22185120