3RF2120-1AA02
The Siemens SIRIUS 3RF2120-1AA02 solid-state contactor features a 20A single-phase output, a load voltage of 24 to 230VAC, 24VDC coil control, zero-voltage switching technology, screw terminal wiring, and is suitable for high-frequency switching industrial automation control circuits.
Product Positioning
The 3RF2120-1AA02 is a single-phase solid-state contactor from the Siemens SIRIUS 3RF2 series. It replaces traditional mechanical contacts with semiconductor zero-voltage switching, making it suitable for automation control applications requiring high-frequency switching, low noise, and long lifespan.
Core Product Advantages and Features
Zero-voltage switching technology
It turns on and off when the voltage crosses zero, effectively reducing switching surges and electromagnetic interference, and extending the life of load components.
20A rated current output
It can handle load voltages ranging from 24 to 230VAC, meeting the needs of most single-phase resistive and inductive loads.
Screw terminal wiring design
Both the main circuit and the control circuit use screw terminals, making wiring and construction simple and maintenance and replacement relatively easy.
Compact 22.5mm width
Its slim and lightweight design makes it suitable for installation in the limited space of a control box, and it can be equipped with a heat sink to improve load capacity.
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