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Siemens 3RH2122-1KF40 Contactor Relay: 2 NO + 2 NC, 110V DC

Siemens 3RH2122-1KF40 coupling contactor relay with 2 NO + 2 NC contacts.

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ManufacturerSiemens
Part number3RH2122-1KF40
Contacts 2 NO + 2 NC
Coil Voltage 110V DC
Control Voltage 0.7-1.25*Us
Terminal Type Screw
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2 Normally Open, 2 Normally Closed Contacts 110V DC Coil Voltage Integrated Suppressor Diode Screw Terminal Connections Frame Size S00 Suitable for PLC Outputs

The Siemens 3RH2122-1KF40 is a coupling contactor relay featuring 2 normally open (NO) and 2 normally closed (NC) contacts. It operates on a 110V DC coil voltage with a control voltage range of 0.7-1.25*Us. This S00 frame size relay includes an integrated suppressor diode for transient voltage protection and utilizes screw terminals for secure connections. It is designed for suitability with PLC outputs and is not expandable with auxiliary switches.

This contactor relay is commonly used in industrial automation for control circuits, interfacing with PLCs, and providing reliable switching operations. Industries such as manufacturing, process control, and building automation benefit from its robust design and specific features for electrical control panels.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RH2122-1KF40, providing reliable access to essential industrial components. Sourcing from Stanlo ensures you receive quality surplus parts, helping to maintain operational efficiency and reduce downtime.

Contacts2 NO + 2 NC
Coil Voltage110V DC
Control Voltage0.7-1.25*Us
Terminal TypeScrew
Frame SizeS00
FeaturesIntegrated suppressor diode, suitable for PLC outputs
ExpandabilityNot expandable with auxiliary switch
Industrial Control Panels
PLC Interfacing
Automation Systems
Motor Control Circuits
Electrical Distribution
PLC Outputs Industrial Control Systems
Siemens 3RH2122-1KF40 relay 3RH21 Contactor Relay Siemens 110V DC Relay
This relay is designed as a specific component for control circuits. Compatibility with older Siemens parts should be verified by model number.
Expert tip
The integrated suppressor diode in the 3RH2122-1KF40 is crucial for protecting downstream electronic components from voltage spikes generated by inductive loads.
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What is the control voltage range for the Siemens 3RH2122-1KF40?
The Siemens 3RH2122-1KF40 coupling contactor relay has a control voltage range of 0.7 to 1.25 times the rated coil voltage (Us). For its 110V DC coil, this ensures reliable operation within a specific voltage band.