Power contactor, AC-3 9 A, 4 kW / 400 V 1 NO + 1 NC, 24 V DC 3-pole, Size S0 screw terminal Power contactor AC-3 9 A 4 kW / 400 V 1 NO + 1 NC 24 V DC 3-pole Size S0 screw terminal 3RT2023-1BB40 Siemens contactor is a reliable and durable industrial component used in various applications such as motor control, heating, lighting, and power distribution. It can be purchased at PLC2Day, a trusted supplier of industrial automation products.