3RH2140-1BE40
The Siemens SIRIUS 3RH2140-1BE40 is an S00 size contact relay with 4 normally open (4 NO) contacts, a DC 60V coil, and screw terminal connections. It is suitable for devices with DC 60V control power supplies and is used for signal switching and amplification in control circuits.
Product Positioning
The 3RH2140-1BE40 is a basic 4-pole contact relay from the SIRIUS 3RH21 series. It uses a DC 60V coil and screw terminals, making it suitable for devices with DC 60V control power supplies. 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.
DC60V DC coil
DC 60V coil, suitable for devices with DC 60V DC control power supply; if power failure surges need to be suppressed, a diode or varistor module can be inserted on the front.
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.