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Siemens 3RK1303-6DS74-3AA3

Name: 3RK1303-6DS74-3AA3
Brand: Siemens
SKU: 3RK1303-6DS74-3AA3
Price: 495.32 GBP
Availability: InStock

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£495.32 (ex. VAT)

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Image shown may not reflect the final product

Marvo Stock ID MV-7VB7

HS Code 85365080

SKU 3RK1303-6DS74-3AA3

Condition New unboxed

Warranty 12 months

Weight (kg) 3.00

Length (mm) 480.00

Width (mm) 320.00

Height (mm) 320.00

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Specification & Description

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Commonly Asked Questions

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Customer Reviews

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Specification & Description

Specification	Description
Part Number	3RK1303-6DS74-3AA3
Alternative Part Number	3RK13036DS743AA3
Manufacturer	Siemens
Mounting Type	DIN Rail Mount
Dimensions	130 x 250 x 125 mm
Product Design	Reversing starter
Bus-Communication	Yes, with PROFIBUS DP protocol support
Motor Protection	Full motor protection with electronic switching and thermal overload protection
Operating Voltage	400 V to 500 V (rated value)
Service Power	At AC-3, 400 V: 5.5 kW (rated value)
Suitable for Three-Phase Motors	Yes, at 400 V, 50 Hz: 0.9 kW (min) to 5.5 kW (max)
Control Circuit Voltage	DC, 20.4 V (min) to 28.8 V (max)
Adjustable Response Current	2.4 A (initial value) to 12 A (final value)
Breaking Capacity	Short-circuit current (lcu) at 400 V: 100 kA (rated value)
Connection Type	Tab terminals for main current circuit
Protection Class	IP65
Ambient Operating Temperature	-20°C to +40°C
Certificates/Approvals	General Product Approval, Declaration of Conformity, Type Test Certificates/Test Report, other

The Siemens 3RK1303-6DS74-3AA3 is a robust motor starter designed for seamless integration into industrial automation systems. This DIN rail mountable unit is engineered to provide full motor protection with a solid-state switching contact and fuse-based short-circuit protection. It supports a three-phase 400 V power supply and is capable of handling motors with a service power rating of up to 5.5 kW at AC-3, making it suitable for a wide range of applications.

Featuring an adjustable response current ranging from 2.40 A to 12.00 A, the device ensures precise control and protection for connected motors. The motor starter also includes an outlet for an engine brake, enhancing its functionality in applications requiring rapid stopping of motor operations.

With a compact footprint of 130 x 250 x 125 mm, the Siemens 3RK1303-6DS74-3AA3 is designed for space-saving installations while offering easy access to tab terminals for the main current circuit. It operates within an ambient temperature range of -20 to +40°C and boasts an IP65 protection class, ensuring durability and reliable performance in demanding industrial environments.

The unit's compatibility with PROFIBUS DP protocol allows for efficient bus communication, facilitating integration into existing networks and enabling centralised control. This feature streamlines processes and contributes to system optimisation.

Overall, the Siemens 3RK1303-6DS74-3AA3 motor starter is a high-quality component that offers reliability, efficiency, and advanced protection for industrial motors, making it a valuable addition to any automation system.

Commonly Asked Questions

Is my order covered by a warranty?

Marvo provides a full 12-month warranty on all products, whatever the condition. For your peace of mind, all parts are ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. If you are unhappy with the part(s) you received and would like to request a return, you can do so by completing our quick and easy online form. Once we have received your Returns Request, a member of the team will be in touch to discuss this further with you. You can read more about our warranty policy here.

What payment methods do you accept?

We accept card payments from all major credit, debit and Mastercard providers including Visa, American Express, Western Union, Paypal and bank transfers. Before you complete an order you will be prompted to input your payment details, at which point you can enter the relevant card information you wish to use for your transaction. If you are experiencing issues with your payment method then you can contact our team via email here. From there, you will be directed to the most relevant resource or person to help you complete your payment, get your order processed and ensure that your parts are on the way to your delivery address.

Is Marvo a credible parts supplier?

Marvo is a highly credible supplier of industrial automation parts and components with dedicated hubs around the world offering industry-leading products and services. Marvo is committed to providing a quick, easy and reliable place to source your automation and control components. All purchases come as standard with a comprehensive 12-month return to base warranty meaning that, in just a few clicks, you can source critical parts more seamlessly than ever before. Click here to read an article on how Marvo is redefining convenience for automation and manufacturing professionals.

Have steps been taken to ensure quality control?

Marvo takes pride in product quality and has put several measures in place to assure high levels of quality standards. For your peace of mind, all parts have been ‘Marvo Approved’ which means that they have been tested and checked to ensure that they are in working condition. Redefine convenience and secure priority delivery on all parts along with a comprehensive 12-month warranty. This is the smart new way to buy automation and control components.

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Our service to you

Lightning-Fast Express Shipping: Receive your order in record time with our express shipping options, ensuring you minimize downtime and keep your projects on track.

No-Risk Returns, Guaranteed: Return your parts anytime for a full refund. Our hassle-free return policy ensures you’re never stuck with something you don’t need.

Clear Pricing with No Hidden Fees: What you see is what you pay, transparent pricing with no extra costs, ever. Rest assured, all taxes and fees are already included in your final price.

Rock-Solid Reliability at a Fraction of the Cost: Get pre-owned electronic parts that are fully tested for peak performance, saving you money without compromising on quality, backed by a comprehensive warranty.

Frequently Asked Questions

What is the function of this motor starter?

The Siemens motor starter is designed for electronically switching motors and provides full motor protection with a solid-state design. It's suitable for reversing starter applications and includes a brake contact and overload protection.

Can this motor starter be used with a bus communication system?

Yes, this motor starter supports bus communication and is compatible with the PROFIBUS DP protocol, allowing for integration into automated systems.

What type of motor protection does this starter offer?

It offers full motor protection, ensuring that the motor is safeguarded against potential electrical faults and thermal overloads.

What are the voltage requirements for the control circuit of this starter?

The control circuit operates on DC voltage, with a rated control supply voltage minimum of 20.4 V and a maximum of 28.8 V.

What is the operating voltage range for the main circuit?

The main circuit has an operating voltage rated value with a minimum of 400 V and a maximum of 500 V.

What is the service power capacity of this motor starter?

The service power capacity at AC-3, at 400 V, is rated at 5.5 kW, making it suitable for three-phase servomotors between 0.9 kW and 5.5 kW at 400 V and 50 Hz.

What is the ambient operating temperature range for this device?

The motor starter can operate within an ambient temperature range of -20°C to +40°C.

What is the protection class of this motor starter?

This device is rated with a protection class of IP65, indicating a high level of protection against dust ingress and low-pressure water jets from any direction.

How can the motor starter be mounted?

The motor starter is designed for DIN Rail mounting, facilitating easy installation and integration into electrical cabinets and control panels.

What certifications does this motor starter have?

It comes with a general product approval and a declaration of conformity, ensuring compliance with relevant industry standards.

Part conditions explained

We want your buying experience to be as seamless as possible. So, here are all of the product descriptions you will see when browsing Marvo, explained a little further:

New unsealed: The product is in its original packaging, but the packaging has been opened or unsealed. It has never been used and should be in near pristine condition.

New sealed: The product is sealed in its original packaging. It has never been opened or used, ensuring that it's in an untouched state.

New unboxed: The product does not come in its original packaging, but it has never been used and is in great working condition.

Refurbished: The product has been previously used, but it has undergone a thorough refurbishment process to restore it to a like-new or functional condition. Any defects or issues have been addressed, making it suitable for reuse.

Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.

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