3RT2026-2XF40-0LA2

S0 frame power contactor, AC-3 rated 25A/11kW (400V), 110V DC electronic drive coil, original positioning for rail traction applications, spring terminals, 1NO+1NC auxiliary contacts, high vibration resistance and reliability.

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Siemens 3RT2026-2XF40-0LA2 Power Contactor 110V DC 25A/11kW Rail Use

Product Positioning

The Siemens SIRIUS 3RT2026-2XF40-0LA2 is a high-specification contactor with an S0 frame. The main circuit AC-3 is also 25A/11kW (400V), the coil is 110V DC and adopts an electronic drive circuit, with a built-in rheostat to suppress surges. The original design is for high-vibration and high-reliability applications such as rail vehicles and electric multiple units. With spring-type terminals for quick wiring, it is also suitable as an upgrade option for general factory circuits that require high vibration resistance.

Core Product Advantages and Features

Orbital level reliability

This model was originally designed as a contactor for traction control of rail vehicles. Its structure and coil drive circuit are designed for environments with long-term vibration and frequent opening and closing. When used in general factory control panels, it can be replaced with a higher durability margin.

110V DC electronic drive coil

The coil is 110V DC, uses an electronic (solid-state) drive circuit and has a built-in rheostat to suppress surges. Compared with traditional electromagnetic coils, it has a wider tolerance range to power supply voltage fluctuations.

Quick installation of spring terminals

Both the main and auxiliary circuits use spring-loaded screwless terminals. The crimped wiring can shorten the production and maintenance replacement time of the control panel and reduce the risk of poor contact caused by loose screws.

1NO+1NC auxiliary contact

It comes standard with one normally open and one normally closed instantaneous auxiliary contact, which can be used as a status feedback or interlock signal to meet the basic monitoring needs of most motor control circuits.

project	Specification
Coil voltage/type	110 V DC electronic drive (built-in rheostat)
AC-3 Rated Current	25 A
AC-3 Rated Power (400V)	11 kW
Rated operating voltage	Up to 690 V AC
Main circuit type	3. Normally Open (3NO)
auxiliary contacts	1 NO + 1 NC Instantaneous
Terminal type	Spring-loaded (screwless quick-connect terminal)
Frame size	S0
External dimensions (width × height × depth)	Approximately 108.5 × 54 × 115.5 mm
weight	Approximately 0.583 kg
Typical applications	Traction control for rail vehicles/electric multiple units, motor circuits in high-vibration fields

3RT2026-2XF40-0LA2

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