Siemens 3TY4803-0BB4 is a 24 V DC magnet coil used as a replacement coil for Siemens contactors. It fits contactor families 3TF30-33, 3TF40-43, 3TH3, 3TH4, 3TB40-43, and 3TH8. The coil is energised by a DC control supply of 24 V, and energising it actuates the contactor armature to switch mains loads. Common applications include industrial automation, machine control panels, and power distribution where Siemens 3TF/3TH contactors are used.
