The best way to switch with SIRIUS Contactors

Four SIRIUS 3RV2 motor starter protectors/circuit breakers aligned after size

Over

0 million

  • and counting … Siemens has sold over 200 million SIRIUS contactors world-wide. SIRIUS is the most comprehensive portfolio available on the market, providing an extensive breath of performance capabilities making them the most flexible and scalable products on the market. SIRIUS contactors offer real flexibility and are easy to use with simple tool and error free installation with either screw or spring-cage connection technology. SIRIUS contactors are also featured in Siemens’ digital engineering and selection tools for virtual planning and design, allowing digital twin “Proof of Concept Testing”.

Technical specifications for Contactors

Industry Mall

SIRIUS Contactor Portfolio

Power contactors for motors

Power contactors for switching motors



Switching of electric drives or motors: a classic product with a decades-old functional principle interpreted in a modern and future-oriented way: these are our contactors, a generalist for switching motors.

 

Whether switching normal motors or high-efficiency motors (IE3), whether reversing or star-delta starting from the smallest to the largest power range, whether classic screwing or connecting using spring-cage technology or direct digital control. Our motor contactors can do all this and much more. No drive is too small or no motor start-up too heavy.

SIRIUS 3RT contactors, 3-pole, up to 250 kW

SIRIUS 3RT12 and 3TF6 vacuum contactors

SIRIUS 3RT25 contactors, 4-pole, 2 NO + 2 NC

Contactors for other loads

Contactors can not only switch motors.

We also have specialists for other switching tasks, developed for your special needs.

SIRIUS 3RT.3 contactors, 4-pole, up to 525 A

SIRIUS 3RT.4 contactors for Non-inductive or slightly inductive loads (AC-1), 3-pole up to 2650 A

SIRIUS 3RT26 contactors for capacitive loads (AC-6b), 3-pole

Contactor relays and miniature contactors

Contactor relays and miniature contactors

Auxiliary contactors for control and auxiliary circuits.

SIRIUS 3RH2 contactor relays, 4- and 8-pole

3TG10 power relays/miniature contactors

News around SIRIUS Contactors

Highlights at a glance

Windkraft Anlagen

Reliable switching and protection of large currents

SIRIUS 3RT contactors up to 2,650 A - the perfect combination for wind turbines or converters.

Brochure

Efficient wiring of switchgear

Which connection technology do you use for your switchgear? Have you already tried out spring-cage technology? Now compare conventional screw technology with modern spring-cage technology. We will show you how to connect and install your switchgear quickly and without errors.

Resources

Catalogs and Online Ordering

Engineering Data

Support

24 Hour Tech Support Hotline

Customer Support

Stay up to date

Visit our Reference Library

Check out our how-to videos, customer references & solutions briefs that can help you solve your challenges.

Go to our Reference Library

Related Content

Industrial Controls - SIRIUS

Industrial Controls - SIRIUS

With SIRIUS, we offer you a unique comprehensive portfolio for every industrial control application

SIRIUS 3RV29 infeed system

SIRIUS 3RV29 infeed system

Convenient means of energy supply and distribution

Auxiliary

Auxiliary

Optimize the reliability and energy output of your wind turbines with our concepts for auxiliary systems.