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PRODUCT FAMILY

Siemens SIRIUS Contactors

Siemens SIRIUS contactor hub: 3RT power contactors and 3RH auxiliary contactors with 55 catalogued order numbers, matched by frame and coil.

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SIRIUS Contactors — Available Products

Overview

Siemens SIRIUS contactors are catalogued here as one switching line covering power and auxiliary devices. The family holds 55 catalogued part numbers, all classified as Contactors.

Series in this family

  • 3RT Power Contactors — 40 catalogued parts, the main switching devices of a SIRIUS feeder.
  • 3RH Auxiliary Contactors — 15 catalogued parts, the auxiliary and contactor-relay devices used alongside them.

3RT and 3RH order numbers encode frame size, coil and contact configuration, so a replacement must be matched on the complete order number printed on the device. Protection and soft-start devices for the same feeders are catalogued separately under SIRIUS Motor Protection & Starters. Open the series above for the catalogued numbers, or send the 3RT/3RH number with a quote request.

Machine down? Get a fast quote on SIRIUS Contactors parts.

New, surplus, and refurbished Siemens options. Request a quote or speak directly with an automation specialist for emergency sourcing.

Browse by Series

Product Types in this Family

Compatible & related families

Why Buy From Palm Parts Solution

Fast Worldwide Shipping

DHL, FedEx, UPS — door-to-door in 1-4 business days.

Same-Day Quotes

RFQs sent during business hours are answered the same business day.

Sourcing Options

New, surplus and refurbished Siemens options — request current availability.

Machine-Down Support

24/7 emergency sourcing for production-critical failures.

Request a Quote

Custom pricing on volume, repair, and hard-to-find SKUs.

Automation Specialists

Talk to engineers, not call-center agents.

Product Sourcing

We hunt down discontinued and obsolete parts globally.

Obsolete Support

Lifecycle-end Siemens parts — sourced, tested, warrantied.

Frequently asked questions

What is the SIRIUS Contactors family used for?

The SIRIUS Contactors family from Siemens covers industrial automation applications such as machine control, process control, motor control and discrete I/O. Browse the series below to find the exact part number for your installation.

Are obsolete SIRIUS Contactors parts still available?

Yes. We stock new surplus, refurbished and end-of-life SIRIUS Contactors units from Siemens. If a part number is no longer in production we will identify a compatible replacement or repair your existing module.

How do I identify the correct SIRIUS Contactors replacement?

Match the catalog number printed on the SIRIUS Contactors label, then confirm voltage, I/O count, communication protocol and firmware revision. Our team can validate compatibility against your original Siemens configuration before shipment.

Do SIRIUS Contactors parts come tested?

Every SIRIUS Contactors unit we ship is functionally tested against Siemens OEM specifications. Refurbished items include a 1-year warranty and a full inspection report on request.

Need a specific part?

Send us your part numbers — we'll respond the same business day with pricing and availability.

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Palm Parts Solution sells used surplus products. Palm Parts Solution is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by Palm Parts Solution come with Palm Parts Solution's 1-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

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