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Siemens 3RH1131-1VB40 Contactor Relay 24V DC, 3 NO + 1 NC

Siemens 3RH1131-1VB40 Contactor Relay with 3 NO + 1 NC, integrated diode.

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ManufacturerSiemens

Part number3RH1131-1VB40

Part Number 3RH1131-1VB40

Manufacturer Siemens

Type Contactor Relay

Voltage 24 V DC

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3 NO + 1 NC contacts 24V DC coil Size S00 Screw terminal Integrated diode for suppression Auxiliary circuit control

Product description

The Siemens 3RH1131-1VB40 is a 24V DC contactor relay for auxiliary circuits, featuring 3 normally open (NO) and 1 normally closed (NC) contacts. It is designed for size S00 and utilizes screw terminals. This relay operates within a range of 0.85 to 1.85 times the supply voltage (Us) and includes an integrated diode for coil suppression, consuming 1.4 W. It is part of the SIRIUS 3RH11 series.

This contactor relay is well-suited for control applications requiring a specific contact arrangement (3 NO + 1 NC) and where coil protection via an integrated diode is beneficial. Common uses include motor control and auxiliary switching in industrial automation.

As a veteran-owned surplus parts distributor, Stanlo Automation provides reliable access to essential industrial automation components like the Siemens 3RH1131-1VB40. We help keep your operations running with quality, available parts.

Technical specifications

Part Number	3RH1131-1VB40
Manufacturer	Siemens
Type	Contactor Relay
Voltage	24 V DC
Contacts	3 NO + 1 NC
Size	S00
Termination	Screw Terminal
Features	Integrated diode
Power Consumption	1.4 W
Operating Range	0.85...1.85 x Us

Common applications

Motor control

Auxiliary switching

Control panels

Industrial automation

Machine control

Automation systems

Compatible systems

Control systems Automation equipment Motor starter circuits

Also known as

Siemens 3RH1131-1VB40 SIRIUS 3RH11 24V DC Relay Siemens Diode Contactor Relay

Replaces / compatible with

This part is a phased-out product with a successor being the SIRIUS 3RH2 series, specifically the 3RH2131-1VB40.

Technical note

Expert tip

The integrated diode provides effective suppression for 24V DC coils, ensuring compatibility with many control systems without the need for external suppression modules.

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Frequently asked questions

What type of coil suppression does the Siemens 3RH1131-1VB40 have?

The Siemens 3RH1131-1VB40 contactor relay features an integrated diode for coil suppression. This helps protect the control circuit from voltage spikes generated by the coil's inductance when de-energized.