3RH2131-1JB40
Siemens SIRIUS 3RH2131-1JB40 coupling contactor relay, 24V DC coil, built-in diode absorber coil surge, operating range 0.7~1.25 times rated voltage, suitable for direct drive of PLC output terminals, 3NO+1NC contacts, S00 volume screw terminal design.
Product Positioning
The 3RH2131-1JB40 belongs to the SIRIUS coupling contactor relay family. The coil is rated at 24V DC and has a built-in diode, making it suitable as a coupling element between PLC output signals and control circuits.
Core Product Advantages and Features
24V DC coil with diode
The coil has a built-in diode to absorb and release instantaneous induced surges, thus extending the lifespan of the output components.
Suitable for low-current control signal coupling
Used as an isolation coupling element between the PLC or controller output and the field control loop.
3NO+1NC standard contact
It provides 3 sets of normally open and 1 set of normally closed contacts to meet the contact requirements of most control circuits.
Screw terminal wiring
Using screw terminals, wiring construction and maintenance are convenient, and it is suitable for installation in general panels.
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3RH2131-1FB40
The Siemens SIRIUS 3RH2131-1FB40 auxiliary contactor relay features a 24V DC coil with a built-in diode to reduce coil power-off surges. It offers a 3NO+1NC contact configuration, a compact size, and screw terminals, making it suitable for general control circuit signal switching applications.
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3RH2131-1BW40
The Siemens SIRIUS 3RH2131-1BW40 auxiliary contactor relay has a coil rated at 48V DC, provides 3 sets of normally open and 1 set of normally closed contacts, features an S00 size with screw terminals, and has an insulation voltage of 690V AC. It is suitable for control circuit signal switching and logic conversion applications.