3RH2140-1AN20
The Siemens SIRIUS 3RH2140-1AN20 is an S00 size contact relay with 4 normally open (4NO) contacts, an AC 220V 50/60Hz coil, and screw terminal connections. It can directly use the common AC 220V control power supply in Taiwan for signal switching and amplification in control circuits.
Product Positioning
The 3RH2140-1AN20 is a basic 4-pole contact relay from the SIRIUS 3RH21 series. It uses an AC 220V 50/60Hz coil and screw terminals, allowing direct use with common Taiwanese AC 220V control power supplies. It can be used for PLC output expansion, interlocking control, and signal multiplication, making it a common intermediate relay choice for control panels.
Core Product Advantages and Features
4NO contact configuration
The device has four normally open instantaneous contacts, which can switch multiple control signals simultaneously to meet general interlocking and signal amplification requirements.
AC220V coil
The AC 220V 50/60Hz coil can be directly used with the common AC 220V control power supply in Taiwan, eliminating the need for additional voltage conversion components.
Screw terminals
The screw terminal wiring is secure and suitable for general panel installation and future maintenance disconnection.
Expandable to 8 poles
The front can be fitted with a 3RH29 auxiliary switch, and up to 4 more contacts can be added. The number of control points can be expanded using the same relay.