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Siemens 3TC4417-0LB4 Railway Contactor - 7.5A, 750V DC

Siemens 3TC4417-0LB4 railway contactor, frame size 2, 7.5A, 750V DC.

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ManufacturerSiemens

Part number3TC4417-0LB4

Part Number 3TC4417-0LB4

Manufacturer Siemens

Frame Size 2

Poles 2

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Railway Application Specific 7.5A at 750V DC Rating 24V DC Coil Integrated Varistor & Resistor 21 Auxiliary Contacts (2 NO, 1 NC)

Product description

The Siemens 3TC4417-0LB4 is a specialized 2-pole contactor designed for demanding railway applications. Housed in frame size 2, it is rated for 7.5A at 750V DC and features a 24V DC coil. This model includes a varistor and series resistor for surge protection and has 21 auxiliary contacts, consisting of 2 normally open (NO) and 1 normally closed (NC) contact. Its operating range is 0.7 to 1.25 times the control voltage (Us).

This contactor is engineered for the unique requirements of railway systems, ensuring reliable performance in harsh environments. Its applications include power control, auxiliary circuit switching, and system protection within rolling stock and signaling systems.

Stanlo Automation, a veteran-owned surplus distributor, provides the Siemens 3TC4417-0LB4 for your railway automation needs. We offer quality surplus parts, ensuring cost-effectiveness and availability for your critical projects.

Technical specifications

Part Number	3TC4417-0LB4
Manufacturer	Siemens
Frame Size	2
Poles	2
Application	Railway
Rated Current	7.5 A at 750 V DC
Coil Voltage	24 V DC
Auxiliary Contacts	21 (2 NO + 1 NC)
Features	Varistor, Series Resistor, Operating Range 0.7-1.25xUs

Common applications

Railway Power Control

Rolling Stock Systems

Signaling Equipment

Traction Systems

Railway Auxiliary Circuits

Compatible systems

Siemens Railway Control Systems

Also known as

Siemens Railway Contactor 3TC4417 DC Railway Contactor Siemens 750V DC Contactor

Replaces / compatible with

Designed for specific Siemens railway control systems. Verify application requirements before replacing.

Technical note

Expert tip

The integrated varistor and series resistor are crucial for protecting the coil and contacts from transient voltage spikes common in railway power systems.

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Frequently asked questions

What makes the Siemens 3TC4417-0LB4 suitable for railway applications?

The Siemens 3TC4417-0LB4 is designed for railway applications due to its 750V DC rating, integrated surge protection (varistor and series resistor), and specific auxiliary contact configuration. It meets the demanding environmental and electrical requirements of rolling stock and related systems.