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Siemens 3RH2131-1JB40 Coupling Relay with Diode - 24V DC

Siemens 3RH2131-1JB40 coupling relay with diode - 24V DC, suitable for PLC.

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ManufacturerSiemens

Part number3RH2131-1JB40

Coil Voltage 24 V DC

Contacts 3 NO + 1 NC

Terminal Type Screw

Frame Size S00

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3 NO and 1 NC contacts 24V DC coil Integrated suppression diode Suitable for PLC outputs Screw terminal connections Frame size S00

Product description

The Siemens 3RH2131-1JB40 is a coupling contactor relay designed for interfacing with PLC outputs. It features 3 normally open (NO) and 1 normally closed (NC) contacts and operates on a 24V DC coil. This model includes an integrated suppression diode for protection against voltage spikes and utilizes screw terminals. It's built for frame size S00 and is not expandable with auxiliary switches.

This relay is specifically suited for applications requiring a reliable interface between low-power PLC outputs and higher-power control circuits, offering isolation and protection. It's commonly used in automation systems, control panels, and machinery.

Stanlo Automation, a veteran-owned supplier, offers the Siemens 3RH2131-1JB40. We specialize in surplus industrial automation parts, ensuring you receive quality components with fast delivery to keep your projects on track.

Technical specifications

Coil Voltage	24 V DC
Contacts	3 NO + 1 NC
Terminal Type	Screw
Frame Size	S00
Features	Integrated diode, PLC compatible

Common applications

PLC interfacing

Industrial automation

Control panels

Motor starters

Signaling circuits

Automation systems

Compatible systems

PLCs with 24V DC outputs, control circuits requiring inductive load protection and isolation

Also known as

Siemens 3RH21311JB40 3RH2131-1JB40 Contactor Siemens PLC Coupling Relay

Replaces / compatible with

This part is a Siemens 3RH21 series coupling relay. It is designed for PLC output interfacing and is not expandable with auxiliary switches.

Technical note

Expert tip

This relay is not expandable with auxiliary switches, so ensure its fixed contact configuration meets your application's needs.

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Frequently asked questions

Why is the Siemens 3RH2131-1JB40 suitable for PLC outputs?

The Siemens 3RH2131-1JB40 is suitable for PLC outputs because it has a 24V DC coil, an integrated suppression diode to protect the PLC, and provides electrical isolation. Its design helps prevent feedback from the controlled circuit to the PLC.