3RH11222KV800LA0
The Siemens SIRIUS 3RH11 series coupling relay features 2NO+1NC contacts, a wide-range DC coil from 24 to 43V, and a built-in surge suppressor. It is equipped with railway-grade spring clip terminals and an S00 frame and is designed for signal conversion and isolation requirements in rail vehicles and railway control circuits.
Product Positioning
The Siemens SIRIUS 3RH11 coupling relay is designed for signal conversion and isolation in control circuits. This model features a wide-range 24 to 43V DC coil and a built-in surge absorber. It is equipped with railway-specific spring clamp terminals and is suitable for special applications such as rail vehicles.
Core Product Advantages and Features
2NO+1NC contact configuration
It provides two sets of normally open and one set of normally closed contacts, which can be flexibly configured to form signal conversion and interlocking logic for control loops.
24 to 43V DC wide range coil
The coil can operate within a range of 24 to 43V DC, adapting to the operating environment where the power supply voltage of railway vehicles fluctuates greatly.
Built-in surge absorber
The coil terminal has a built-in varistor surge suppression element to reduce the impact of voltage surges generated during switching on the control circuit.
Railway spring clamp terminals
The spring clip (cage clip) wire terminal design ensures quick and secure wiring, meeting the vibration protection requirements of railway vehicles.
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The Siemens SIRIUS 3RH1122 intermediate relay provides four sets of auxiliary contacts (2NO + 2NC), with a coil rated voltage of 24V DC, an S00 frame screw terminal design, an insulation voltage of 690V, a mechanical life of 30 million cycles, and an IP20 protection rating. It is suitable for signal conversion and interlocking circuits in industrial control panels.
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3RH1122-1AN20
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