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Siemens 3RH2140-2FB40 4 NO Contactor Relay - 24V DC with Diode, Spring Terminals

Siemens 3RH2140-2FB40 4 NO Contactor Relay, 24V DC, with Diode, Spring Terminals.

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ManufacturerSiemens

Part number3RH2140-2FB40

Contacts 4 NO

Coil Voltage 24 V DC

Integrated Diode Yes

Terminal Type Spring-loaded

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4 Normally Open Contacts 24V DC Coil Integrated Diode Spring-Loaded Terminals Frame Size S00

Product description

The Siemens 3RH2140-2FB40 is a 4-pole auxiliary contactor relay featuring 4 normally open (NO) contacts. It is equipped with a 24 V DC coil and includes an integrated diode for surge suppression. This model uses spring-loaded terminals for quick and reliable wiring and is built on the S00 frame size.

This relay is ideal for use in control circuits within industrial automation systems, motor control centers, and machine building applications. The integrated diode provides protection against voltage spikes, enhancing the longevity of connected control components.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, carries the Siemens 3RH2140-2FB40. Secure your essential automation components from a reliable source with competitive pricing.

Technical specifications

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

Common applications

Control circuits

Motor control

Automation systems

PLC interfaces

Industrial panels

Compatible systems

Siemens Sirius 3RH2 series control modules

Also known as

Siemens 3RH2140-2FB40 relay Siemens 24V DC contactor relay with diode 3RH2 spring terminal DC relay

Replaces / compatible with

This part is a Siemens 3RH2 series contactor relay. It is compatible with Siemens control systems and offers an integrated diode for surge protection with spring-loaded terminals.

Technical note

Expert tip

The spring-loaded terminals offer a secure and fast connection, ideal for high-vibration environments common in industrial automation.

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Frequently asked questions

Why is the integrated diode in the Siemens 3RH2140-2FB40 important?

The integrated diode in the Siemens 3RH2140-2FB40 protects sensitive control circuitry from potentially damaging voltage spikes that occur when the relay coil is de-energized.