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Siemens 3RT1456-2XB46-0LA2 Power Contactor - 275A, 24V DC Coil

Siemens 3RT1456-2XB46-0LA2 3-pole AC-1 power contactor.

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ManufacturerSiemens

Part number3RT1456-2XB46-0LA2

Type Power Contactor AC-1

Current 275A

Voltage 690V

Coil Voltage 24V DC

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275A AC-1 rating 690V voltage 24V DC coil with PLC input 2 NO + 2 NC auxiliary contacts Spring-loaded terminals Busbar main circuit

Product description

The Siemens 3RT1456-2XB46-0LA2 is a heavy-duty 3-pole power contactor rated for AC-1 loads up to 275A at 690V. It features a 24V DC coil with a PLC input range (0.7-1.25 Uc) and spring-loaded terminals for both control and auxiliary circuits. This model includes integrated electronic auxiliary contacts (2 NO + 2 NC) and is designed for busbar connection in the main circuit, with extended rated conditions for railroad applications (IEC 60077).

This contactor is engineered for demanding applications in heavy industry, power distribution, rail transport, and specialized machinery where high current capacity and reliability are essential. The DC coil and PLC input compatibility make it suitable for advanced control systems.

Stanlo Automation, a veteran-owned surplus parts distributor, offers this specialized Siemens contactor. We provide access to high-quality, often hard-to-find components for your critical industrial automation projects.

Technical specifications

Type	Power Contactor AC-1
Current	275A
Voltage	690V
Coil Voltage	24V DC
Poles	3
Aux Contacts	2 NO + 2 NC
Terminals	Spring-loaded
Special	PLC input, Busbar, Railroad IEC 60077

Common applications

Railroad systems

Heavy industry

Power distribution

Motor control

Control panels

Industrial machinery

Compatible systems

Industrial control systems PLC interfaces High-power distribution panels

Also known as

Siemens 275A contactor 3RT1456 Series DC coil power contactor

Replaces / compatible with

Designed for high-power AC-1 applications, this contactor may replace older or less capable contactors in demanding industrial settings.

Technical note

Expert tip

The spring-loaded terminals offer vibration resistance and quick termination, suitable for environments where reliable connections are critical.

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Frequently asked questions

What are the auxiliary contacts on the Siemens 3RT1456-2XB46-0LA2 contactor?

The Siemens 3RT1456-2XB46-0LA2 features integrated electronic auxiliary contacts, specifically 2 Normally Open (NO) and 2 Normally Closed (NC) contacts, providing additional signaling and control capabilities.