Siemens 3TE74942AR0 Star Delta Starter – 30 kW, 3 Phase, 415 V

The Siemens 3TE74942AR0 Star Delta Starter is an automatic motor starter designed for 30 kW, 3-phase motors operating at 415 V. It belongs to the Siemens 3TE7 Star Delta Starter range and is suitable for industrial motor-control applications where reducing the starting current of a motor is important.

The 3TE74942AR0 is identified for a 30 kW motor, with a 415 V AC control voltage. Available product references also identify the corresponding 3TE7494-2AR0 variant with a 20–32 A current range and without an integrated overload/birelay.

A star-delta starter initially starts a suitable motor in the star configuration and subsequently changes it to delta for normal operation. This method helps reduce the starting current compared with direct-on-line starting and can be useful in industrial installations where excessive starting current needs to be limited.

Key Benefits

• Designed for 30 kW three-phase motor applications
• Suitable for 415 V industrial motor systems
• Siemens 3TE7 Star Delta Starter design
• Helps reduce motor starting current during startup
• Suitable for automatic motor starting applications
• Useful for industrial pumps, compressors and fans
• Suitable for manufacturing and production machinery
• Practical for industrial control panels
• Suitable for OEM machinery and panel-building projects
• Useful for motor-control replacement requirements
• Suitable for industrial maintenance applications

Siemens 3TE74942AR0 for Industrial Motor Control

The Siemens 3TE74942AR0 30 kW Star Delta Starter is intended for applications where a suitable three-phase motor needs a controlled starting sequence.

During starting, the motor is connected in the star configuration. After the motor accelerates, the starter changes the connection to delta for normal running. This approach can help reduce the initial current demand compared with DOL starting.

For a 30 kW motor at 415 V, this makes the Siemens 3TE74942AR0 suitable for evaluating in industrial installations where reduced starting current is required.

The motor must be suitable for star-delta starting, and the complete motor, supply and starter requirements should be checked before installation.

Typical Applications

The Siemens 3TE74942AR0 Star Delta Starter can be considered for:

• Industrial motor-control panels
• Water and industrial pumping systems
• Air and gas compressors
• Industrial fans and blowers
• Manufacturing machinery
• Production-line equipment
• Machine tools
• Material-handling equipment
• HVAC motor systems
• Industrial automation installations
• OEM machinery
• Process-industry equipment
• Heavy-duty motor applications

The 30 kW 3TE7494 family is also referenced in Siemens price-list documentation for 30 kW / 415 V, 3-phase motor applications, with the 3TE7494 series associated with a 20–32 A birelay recommendation.

Siemens 3TE74942AR0 for OEM & Panel Builders

OEM machine manufacturers and electrical panel builders can use suitable Siemens star-delta starter assemblies where controlled motor starting is required.

The 3TE74942AR0 can be considered for 30 kW motor starter panels, industrial automation equipment, pumping systems, compressor panels and manufacturing machinery.

For replacement applications, users should compare the existing starter's complete ordering code, motor rating, control voltage, current requirements, mounting arrangement and other installation requirements before ordering.

Buy Siemens 3TE74942AR0 in India

Looking to buy Siemens 3TE74942AR0 Star Delta Starter in India? SB Smart supplies Siemens industrial electrical products for OEMs, contractors, panel builders, maintenance teams, system integrators and industrial customers.

If you are searching for a Siemens 30 kW star delta starter supplier in India, Siemens 415 V star delta starter dealer in Delhi NCR, or a Siemens 3TE7 starter supplier in Gurgaon, Faridabad or Noida, SB Smart can assist with availability and quotation requirements.

SB Smart provides delivery across India, including Delhi, Gurgaon, Faridabad, Noida, Punjab, Chandigarh, Mumbai, Pune, Ahmedabad, Jaipur, Bengaluru, Chennai, Hyderabad and Kolkata, along with other major cities.

Explore more Siemens Products at SB Smart.

Why Buy from SB Smart?

SB Smart supplies a wide range of Siemens motor starters, contactors, overload relays, industrial switchgear, automation products and electrical components for industrial applications.

The product range supports requirements from OEM machinery manufacturers, panel builders, contractors, industrial maintenance teams and system integrators.

For bulk orders, replacement requirements and industrial projects, customers can contact SB Smart for product availability and quotation assistance.

Frequently Asked Questions

Q1. What is Siemens 3TE74942AR0?

The Siemens 3TE74942AR0 is a Star Delta Starter designed for a 30 kW, 3-phase motor application at 415 V.

Q2. What motor rating is Siemens 3TE74942AR0 suitable for?

The product is specified for a 30 kW three-phase motor at 415 V. The corresponding 3TE7494-2AR0 product reference is also listed for 30 kW applications.

Q3. What is the control voltage of Siemens 3TE74942AR0?

The specified control voltage is 415 V AC.

Q4. Why use a star-delta starter instead of DOL?

A star-delta starter can reduce the motor's starting current compared with direct-on-line starting, making it useful for installations where high starting current can affect the electrical supply.

Q5. Where can Siemens 3TE74942AR0 be used?

It can be considered for industrial pumps, compressors, fans, manufacturing machinery, production equipment, machine tools and other compatible 30 kW motor applications.

Q6. Is Siemens 3TE74942AR0 suitable for a 415 V three-phase motor?

Yes, the product description identifies it for a 30 kW, 3-phase, 415 V motor application.

Q7. Is a star-delta starter suitable for every 30 kW motor?

No. The motor must have the appropriate winding configuration and terminals for star-delta starting. The motor manufacturer's specifications and the complete starter requirements should be verified before installation.

Q8. Where can I buy Siemens 3TE74942AR0 in India?

You can enquire about the Siemens 3TE74942AR0 from SB Smart for availability, quotation and delivery requirements across India.