3RH2140-2AF00
The Siemens SIRIUS 3RH2140-2AF00 is an S00 size contact relay with 4 normally open (4NO) contacts, an AC 110V 50/60Hz coil, and spring terminal connections. It is suitable for switchboards and machine tools with AC 110V control power supply for signal switching and amplification in control circuits.
Product Positioning
The 3RH2140-2AF00 is a basic 4-pole contact relay from the SIRIUS 3RH21 series. It uses an AC 110V 50/60Hz coil and spring terminals, making it suitable for switchboards and machine tools with AC 110V 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.
AC110V coil
AC 110V 50/60Hz coil, suitable for distribution panels and machines with AC 110V control power supply, eliminating the need for additional voltage conversion components.
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.