3RH2140-2AK60
The Siemens SIRIUS 3RH2140-2AK60 is an S00 size contact relay with 4 normally open (4NO) contacts, AC 110V 50Hz/120V 60Hz dual rated coils, and spring terminal connections, 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 3RH2140-2AK60 belongs to the SIRIUS 3RH21 series of 4-pole basic contact relays. It features dual rated coils and spring terminals for AC 110V 50Hz/120V 60Hz operation, 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.
Spring terminals
Spring-clamp terminals require no screws, allowing for quick wiring and preventing loosening under vibration.
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.