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Siemens 3RA2436-8XF32-1AG2 Star-Delta Contactor Assembly

Siemens 3RA2436-8XF32-1AG2 3-pole Star-Delta Contactor Assembly

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ManufacturerSiemens

Part number3RA2436-8XF32-1AG2

Type Star-Delta Contactor Assembly

AC-3 Rating 45 kW (60 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 S2 110 V AC Coil

Product description

The Siemens 3RA2436-8XF32-1AG2 is a Size S2, 3-pole contactor assembly designed for star-delta (wye-delta) motor starting applications. It is rated for AC-3 duty, supporting 45 kW (60 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 3RA2436-8XF32-1AG2. We provide access to quality components, enabling cost-effective MRO solutions for your facility.

Technical specifications

Type	Star-Delta Contactor Assembly
AC-3 Rating	45 kW (60 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	S2

Common applications

Star-Delta Motor Control

Industrial Pumps

Fans

Compressors

Heavy Machinery

Automation Systems

Compatible systems

Motor control panels PLC systems Industrial automation solutions

Also known as

Siemens Sirius Star-Delta Starter 3RA2436 Contactor Siemens 45kW 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

This Size S2 assembly requires careful integration with a star-delta timer to ensure proper switching and motor protection during startup.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RA2436-8XF32-1AG2 star-delta starter?

The Siemens 3RA2436-8XF32-1AG2 star-delta contactor assembly is rated for AC-3 applications up to 45 kW (60 HP) at 400V.