3RF2120-1AA42

The SIRIUS 3RF2120-1AA42 is a Siemens 20A single-phase solid-state contactor with a 24-230VAC output and a 4-30VDC control voltage. Its narrow 22.5mm housing design makes it suitable for frequent switching applications involving small single-phase motors and heaters.

Share To

Siemens SIRIUS 3RF2120-1AA42 20A Single-Phase Solid-State Contactor

Product Positioning

The SIRIUS 3RF2120-1AA42 is a 20A single-phase solid-state contactor from the Siemens 3RF2 series. It is a model with a smaller current rating in the series and is suitable for the automated control of small single-phase loads.

Core Product Advantages and Features

20A single-phase rated output

Rated current 20A, output voltage 24-230VAC, suitable for small single-phase load switching.

4-30VDC wide range control voltage

The control signals are compatible with the output potentials of various PLCs and controllers, making wiring more flexible.

22.5mm narrow design

With an external width of only 22.5mm, it is easy to install densely side by side inside the control panel.

Contactless semiconductor switching

Replacing mechanical contacts with semiconductor components results in arc-free and noiseless switching with a longer lifespan.

project	Specification
Rated current	20 A
Number of phases	Single phase
Output voltage	24-230 V AC
Control voltage	4-30 V DC
External width	22.5 mm

Recommend

3RF2130-1AA06

The SIRIUS 3RF2130-1AA06 is a Siemens 30A single-phase solid-state contactor with a load voltage of up to 600V. It features 15-24VDC control voltage and zero-voltage switching technology, making it suitable for small and medium-sized single-phase motors and heating circuits.

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.

3RF2090-1AA04

The Siemens SIRIUS 3RF2090-1AA04 solid-state contactor features a 90A high-current output, a load voltage of 48 to 460VAC, a control voltage of 15 to 24VDC, and zero-voltage switching technology, making it suitable for high-load industrial automation control circuits.