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.
Product Positioning
The 3RH2131-1FB40 is a standard SIRIUS auxiliary contactor relay with a coil rated at 24V DC and a built-in diode. It is used for signal switching and relay logic applications in general control circuits.
Core Product Advantages and Features
24V DC coil with built-in diode
The coil has a built-in diode to absorb the surge voltage during power failure and protect the surrounding control components.
Standard auxiliary contactor design
It can be used as a signal relay and logic switch for general control circuits; it is not a dedicated PLC-coupled type.
3NO+1NC contact configuration
It provides 3 sets of normally open and 1 set of normally closed auxiliary contacts to meet the needs of multi-loop control.
S00 volume screw terminal
With its compact size and screw terminal wiring, it can be directly mounted on a standard DIN rail.
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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.
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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.
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3RH2131-1BM40
The Siemens SIRIUS 3RH2131-1BM40 auxiliary contactor relay has a coil rated at 220V DC, provides 3 sets of normally open and 1 set of normally closed contacts, has an S00 size and screw terminals, and an insulation voltage of 690V AC. It is suitable for high-voltage DC control circuit signal switching applications.