Siemens 3RF2320-1AA24 Semiconductor Solid State Contactor

Siemens 3RF2320-1AA24 is a one-pole SIRIUS solid-state contactor (3RF2) designed to switch AC loads with zero-cross switching. It is rated for 20 A (AC-51) at 40 °C and supports a load voltage range of 48–460 V AC, with a 110–230 V AC control input delivered via screw terminals. The unit is IP20 protected, has an insulation voltage of up to 600 V, and is intended for DIN-rail mounting in industrial panels; ambient operating temperature is -25 to +60 °C and up to 1,000 m altitude. This solid-state contactor is suitable for single-phase motor and heater control in automation applications where quiet, reliable switching and long life are required.