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Siemens 3RH1140-2JB40 SIRIUS Contactor Relay - 24V DC

Siemens 3RH1140-2JB40 SIRIUS Contactor Relay with 4 NO, 24V DC.

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ManufacturerSiemens

Part number3RH1140-2JB40

Coil Voltage 24V DC

Operating Range 0.7-1.25* Us

Contact Configuration 4 NO

Terminal Type Spring-type

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4 NO Contacts 24V DC Coil Integrated Diode Spring-type Terminals Size S00 PLC Output Compatible

Product description

The Siemens 3RH1140-2JB40 is a 4-pole contactor relay from the SIRIUS series, designed for low-voltage DC control applications. It features four normally open (NO) contacts and operates with a 24V DC coil, offering a wide operating range of 0.7 to 1.25 times the supply voltage (Us). This model includes a built-in diode for surge suppression and utilizes spring-type terminals.

Housed in the compact S00 frame size, this relay is ideal for use in control panels, PLC outputs, and other automation systems where reliable 24V DC switching is required. The integrated diode protects the coil from transient voltage spikes, enhancing system longevity.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RH1140-2JB40. We provide quality industrial automation components and dependable service to meet your specific needs.

Technical specifications

Coil Voltage	24V DC
Operating Range	0.7-1.25* Us
Contact Configuration	4 NO
Terminal Type	Spring-type
Surge Suppression	Diode
Size	S00

Common applications

24V DC Control

PLC Outputs

Automation Panels

Control Systems

Industrial Machinery

Compatible systems

24V DC control systems PLC outputs Automation panels Control cabinets

Also known as

Siemens SIRIUS 3RH1140-2JB40 DC Contactor Relay 24V DC Control Relay

Replaces / compatible with

This is a phased-out product. The preferred successor type is 3RH2140-2JB40.

Technical note

Expert tip

This relay's spring-type terminals offer a tool-free connection method, ideal for quick installations and maintenance in control panels.

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Frequently asked questions

What are the key features of the Siemens 3RH1140-2JB40?

The Siemens 3RH1140-2JB40 is a contactor relay with 4 NO contacts, a 24V DC coil (0.7-1.25* Us), and includes a protective diode. It features spring-type terminals and is designed for use in automation systems.