Siemens 3RT1024-1BF40 Motor Starter Contactor

Siemens 3RT1024-1BF40 is a 3-pole power contactor (motor starter) rated for AC-3 duty, delivering 12 A and handling up to 5.5 kW at 400 V with a 110 V DC control coil. This compact size S0 unit uses screw terminals for the main power path and the control circuit, and it includes one normally open (NO) and one normally closed (NC) auxiliary contact to support start/stop interlock and status feedback in three-phase motor circuits. The main contacts are rated for voltages up to 690 V AC, making it suitable for a range of industrial motor applications, while the 110 V DC coil provides reliable energization and compact control in standard panels.