3RH2140-1AV60
The Siemens SIRIUS 3RH2140-1AV60 is an S00 size contact relay with 4 normally open (4NO) contacts, an AC 480V 60Hz coil, and screw terminal connections. It can directly draw power from North American 480V systems as the control voltage for signal switching and amplification in control circuits.
Product Positioning
The 3RH2140-1AV60 is a basic 4-pole contact relay from the SIRIUS 3RH21 series. It uses an AC 480V 60Hz coil and screw terminals, allowing direct use of North American 480V system power supplies as control voltage. It can be used for PLC output expansion, interlocking control, and signal multiplication, and is a common intermediate relay choice in 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.
480V 60Hz coil
The AC 480V 60Hz coil can be directly powered by the North American 480V system, eliminating the need for a control transformer and simplifying the panel configuration.
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.