3RH2140-1AK60
The Siemens SIRIUS 3RH2140-1AK60 is an S00 size contact relay with 4 normally open (4NO) contacts, AC 110V 50Hz/120V 60Hz dual rated coils, and screw terminal connection, facilitating the shipment of the same model to both 50Hz and 60Hz markets. It is used for signal switching and amplification in control circuits.
Product Positioning
The 3RH2140-1AK60 belongs to the SIRIUS 3RH21 series of 4-pole basic contact relays. It features dual rated coils (AC 110V 50Hz/120V 60Hz) and screw terminals, facilitating the shipment of the same model to both 50Hz and 60Hz markets. It can be used for PLC output expansion, interlocking control, and signal multiplication, making it 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.
AC110/120V coil
AC 110V 50Hz/120V 60Hz dual rated coils, facilitating the shipment of the same model to both the 50Hz and 60Hz markets.
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.