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Siemens 3RH2122-2KB40-0LA0 Railway Contactor Relay - 24V DC

Siemens 3RH2122-2KB40-0LA0 railway contactor relay.

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ManufacturerSiemens

Part number3RH2122-2KB40-0LA0

Contacts 2 NO + 1 NC

Coil Voltage 24V DC

Railway Certified Yes

Terminal Type Spring-loaded

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CAGE: 9NK75

2 NO + 1 NC auxiliary contacts 24V DC coil voltage Integrated suppressor diode Spring-loaded terminal connections Designed for railway applications Frame size S00

Product description

The Siemens 3RH2122-2KB40-0LA0 is a specialized contactor relay designed for railway applications. It features 2 normally open (NO) and 1 normally closed (NC) auxiliary contacts, operates on a 24V DC control voltage, and includes an integrated suppressor diode. This model is equipped with spring-loaded terminals for secure connections and is housed in frame size S00. Its design adheres to the specific requirements for railway rolling stock and infrastructure.

This railway-certified contactor relay is suitable for use in control systems within trains, trams, and other rail vehicles, as well as in railway signaling and infrastructure management. The robust construction and reliable performance are critical for the demanding conditions of the railway industry, ensuring safe and consistent operation.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3RH2122-2KB40-0LA0. We provide reliable access to specialized components like this railway contactor relay, ensuring your critical infrastructure projects are supported. Count on Stanlo Automation for your surplus industrial needs.

Technical specifications

Contacts	2 NO + 1 NC
Coil Voltage	24V DC
Railway Certified	Yes
Terminal Type	Spring-loaded
Frame Size	S00
Suppressor Diode	Yes

Common applications

Railway control systems

Rolling stock

Train signaling

Railway infrastructure

Traction control

Compatible systems

Railway control systems Rolling stock electrical systems Signaling control units

Also known as

Siemens 3RH2122-2KB40-0LA0 rail relay Siemens 24V DC railway contactor

Replaces / compatible with

Specifically designed for railway applications, replacing older or standard relays where specific railway certifications are required.

Technical note

Expert tip

The integrated varistor provides protection against transient overvoltages common in railway power systems, ensuring operational integrity.

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Frequently asked questions

What makes the Siemens 3RH2122-2KB40-0LA0 suitable for railway applications?

The Siemens 3RH2122-2KB40-0LA0 is designed and certified to meet the stringent requirements of railway applications, including robust construction and reliable operation under vibration and extreme environmental conditions.