TracoPower TBL Series DIN Rail Power Supplies, 1 Phase – TracoPower TBL 030-112, This is part of TracoPower’s TBL series of small DIN rail power supplies designed especially for building and factory automation. The ultra-compact low profile case fits in standardised wall mounted control panels. TracoPower TBL 030-112 DIN Rail Power Supply 12V DC 2.5A 30W, 1 Phase