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Siemens 3RA2426-8XF32-1AG2 Star-Delta Contactor Assembly

Siemens 3RA2426-8XF32-1AG2 3-pole Star-Delta Contactor Assembly

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ManufacturerSiemens

Part number3RA2426-8XF32-1AG2

Type Star-Delta Contactor Assembly

AC-3 Rating 22 kW (30 HP) / 400 V

Poles 3

Coil Voltage 110 V AC 50/60 Hz

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Star-Delta Motor Starting Integrated Electrical & Mechanical Interlocks 3 NO + 3 NC Auxiliary Contacts Screw Terminal Connections Size S0 110 V AC Coil

Product description

The Siemens 3RA2426-8XF32-1AG2 is a Size S0, 3-pole contactor assembly designed for star-delta (wye-delta) motor starting applications. It is rated for AC-3 duty, supporting 22 kW (30 HP) at 400V. This assembly features a 110 V AC coil (50/60 Hz), screw terminals, and integrated electrical and mechanical interlocks for reliable and safe operation. It is equipped with 3 normally open (NO) and 3 normally closed (NC) auxiliary contacts.

This contactor assembly is ideal for applications requiring reduced starting current, commonly found in large industrial motors, pumps, fans, and compressors where smooth acceleration is beneficial. Its use helps minimize power surges during motor startup.

Stanlo Automation, a veteran-owned business specializing in surplus industrial automation parts, offers the Siemens 3RA2426-8XF32-1AG2. We provide access to quality components, enabling cost-effective MRO solutions for your facility.

Technical specifications

Type	Star-Delta Contactor Assembly
AC-3 Rating	22 kW (30 HP) / 400 V
Poles	3
Coil Voltage	110 V AC 50/60 Hz
Terminals	Screw
Interlock	Electrical and Mechanical (Integrated)
Auxiliary Contacts	3 NO + 3 NC
Size	S0

Common applications

Star-Delta Motor Control

Industrial Fans

Pumps

Compressors

Machine Tools

Heavy Duty Automation

Compatible systems

Motor control panels PLC logic Industrial automation systems

Also known as

Siemens Sirius Star-Delta Starter 3RA2426 Contactor Siemens 22kW Wye-Delta Assembly

Replaces / compatible with

This integrated assembly simplifies star-delta starting configurations, often replacing the need for separate contactors, timers, and mechanical interlocks.

Technical note

Expert tip

Ensure the star-delta timer is correctly configured to manage the transition from star to delta mode to prevent motor damage.

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Frequently asked questions

What is the coil voltage and frequency for the Siemens 3RA2426-8XF32-1AG2?

The Siemens 3RA2426-8XF32-1AG2 star-delta contactor assembly is designed with a 110 V AC coil that operates at both 50 Hz and 60 Hz.