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Siemens 3RH2140-1FB40 4 NO Contactor Relay - 24V DC with Diode

Siemens 3RH2140-1FB40 4 NO Contactor Relay, 24V DC, with Diode.

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ManufacturerSiemens

Part number3RH2140-1FB40

Contacts 4 NO

Coil Voltage 24 V DC

Integrated Diode Yes

Terminal Type Screw

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4 Normally Open Contacts 24V DC Coil Integrated Diode for Surge Suppression Screw Terminal Connections Frame Size S00

Product description

The Siemens 3RH2140-1FB40 is a 4-pole auxiliary contactor relay featuring 4 normally open (NO) contacts and a 24 V DC coil voltage. It includes an integrated diode for surge suppression, screw terminals for reliable connections, and is built on the S00 frame size.

This relay is ideal for control circuits in various industrial applications, including machine tools, material handling, and automation systems. The integrated diode protects control circuits from voltage spikes generated when the coil is de-energized.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RH2140-1FB40. Secure your automation components with confidence from our reliable supply.

Technical specifications

Contacts	4 NO
Coil Voltage	24 V DC
Integrated Diode	Yes
Terminal Type	Screw
Frame Size	S00
Manufacturer	Siemens

Common applications

Control circuits

Motor starters

Automation panels

Machine control

PLC outputs

Compatible systems

Siemens Sirius 3RH2 series control modules

Also known as

Siemens 3RH2140-1FB40 relay Siemens 24V DC contactor relay 3RH2 auxiliary relay

Replaces / compatible with

This part is a Siemens 3RH2 series contactor relay. It is compatible with various Siemens control systems and accessories.

Technical note

Expert tip

The integrated diode simplifies wiring by eliminating the need for external surge suppression components.

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Frequently asked questions

Does the Siemens 3RH2140-1FB40 have surge protection?

Yes, the Siemens 3RH2140-1FB40 features an integrated diode, which provides essential surge suppression for the control circuit when the coil is de-energized.