Siemens 3RF2320-1AA04 SIRIUS 20A 1-Pole Solid State Contactor | 24V DC Control, 48–460V AC Output

Achieve wear-free, noise-free resistive load switching in tight control cabinets with the Siemens 3RF2320-1AA04 SIRIUS 20A Solid State Contactor. Manufactured by Siemens for the SIRIUS 3RF23 modular series, this single-pole solid-state contactor (SSC) integrates a semiconductor power relay with an optimized heatsink in a slim 22.5 mm design. The 3RF2320-1AA04 switches single-phase main line operating voltages from 48V AC to 460V AC at up to 20 A load current, offering an ideal maintenance-free alternative to mechanical contactors. Controlled by a standard 15–24V DC signal, it employs zero-point (zero-cross) switching to minimize electrical noise during operation. Featuring IP20 touch-safe screw terminal protection, standard 35 mm DIN rail mounting, and high immunity to shock and vibration, it provides exceptional reliability for industrial heating control, injection molding, thermoforming, and packaging systems.