Siemens 3TF4722-0BB4 High Current 3-Phase Contactor

Siemens 3TF4722-0BB4 is a Size 3, three-pole high-current contactor (motor starter) with a 24 V DC coil. It is designed for three-phase switching up to 690 VAC and carries an AC-3 rated current of 90 A, suitable for mid-range motors in industrial panels; in a 400 V system it can handle about 30 kW (AC-3). An auxiliary contact block option provides 2 normally open and 2 normally closed contacts (22). This Siemens part is intended for plug-in installation in control cabinets, enabling reliable motor control when operated from a 24 V DC control circuit. The model number 3TF4722-0BB4 uniquely identifies this Size 3, 3-pole configuration with a DC coil and broad switching capability.