3RH2140-1FB40
The Siemens SIRIUS 3RH2140-1FB40 is an S00 contact relay with 4 normally open contacts, a DC 24V coil, and a built-in diode. It can absorb coil power failure surges and protect PLC output points. It has screw terminal connections and is suitable for DC 24V control systems.
Product Positioning
The 3RH2140-1FB40 is a SIRIUS 3RH21 series DC contact relay. The DC 24V coil is manufactured with an integrated diode, making it suitable for control panels driven by PLCs or electronic controllers that require reduced power outage surge interference.
Core Product Advantages and Features
4NO contact configuration
The device has four normally open instantaneous contacts, which can switch multiple control signals simultaneously.
Built-in diode in coil
The coil has an integrated diode, which can absorb the surge voltage during power failure and protect the PLC output point and surrounding electronic modules.
S00 Compact Size
With a width of only 45mm, the same size as the SIRIUS 3RT2 contactor, the panel is neatly arranged and saves space.
Screw terminals
The screw terminal wiring is secure and suitable for general panel installation and future maintenance disconnection.