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Siemens 3TH4253-0LB4 Railway Contactor Relay - 5 NO, 3 NC, 24V DC

Siemens 3TH4253-0LB4 Railway Contactor Relay, 5 NO, 3 NC, 24V DC.

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ManufacturerSiemens

Part number3TH4253-0LB4

Type Contactor Relay

Series 3TH4

Standard EN 50011

Contacts 5 NO + 3 NC

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5 Normally Open Contacts 3 Normally Closed Contacts Screw Terminal Connections 24V DC Coil with Varistor Designed for Railway Applications EN 50011 Compliant

Product description

The Siemens 3TH4253-0LB4 is a 53E series contactor relay engineered for railway applications, adhering to EN 50011 standards. It features a contact configuration of 5 normally open (NO) and 3 normally closed (NC) contacts, all with screw terminals. This relay operates on a 24 V DC coil with an extended operating range from 0.7 to 1.25 times the rated voltage, and includes a built-in varistor for transient voltage suppression.

This specialized contactor relay is designed for use in railway control systems, power distribution within rolling stock, and associated infrastructure where reliable DC switching and protection against voltage fluctuations are paramount.

Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts, offers the Siemens 3TH4253-0LB4. Secure high-quality components for your railway projects with confidence and efficiency.

Technical specifications

Type	Contactor Relay
Series	3TH4
Standard	EN 50011
Contacts	5 NO + 3 NC
Terminals	Screw
Coil Voltage	24 V DC
Operating Range	0.7-1.25 x Us
Protection	Integrated Varistor

Common applications

Railway Control Systems

Rolling Stock Power

Signaling Systems

Automation Control

Switchgear

Industrial Electronics

Compatible systems

Railway Control Systems DC Power Distribution Rolling Stock Electrical Systems

Also known as

Siemens 3TH4 railway relay 3TH4253-0LB4 Contactor Siemens 53E railway relay

Replaces / compatible with

This Siemens 3TH4253-0LB4 is tailored for railway applications with its specific 24V DC coil and surge suppression. Verify compatibility with your existing railway control system's voltage and switching requirements.

Technical note

Expert tip

The 0.7 to 1.25xUs operating range ensures reliable function across varying DC supply conditions found in railway environments.

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Frequently asked questions

What is the contact configuration of the Siemens 3TH4253-0LB4?

The Siemens 3TH4253-0LB4 features a contact configuration of 5 normally open (NO) contacts and 3 normally closed (NC) contacts, suitable for complex switching arrangements in railway applications.