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Siemens 3RK1303-6BS74-3AA3

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3RK1303-6BS74-3AA3

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Marvo Stock ID MV-7VB5
HS Code 853650
SKU 3RK1303-6BS74-3AA3
Condition New unboxed
Warranty 12 months
Weight (kg) 1.50
Length (mm) 125.00
Width (mm) 130.00
Height (mm) 250.00

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Specification & Description

Specification Description
Part Number 3RK1303-6BS74-3AA3
Alternative Part Number 3RK13036BS743AA3
Manufacturer Siemens
Product Type PROFIBUS DP Electronic Switching
Operating Voltage Range 400 to 500 V ac
Current Range 0.3 to 3 A
Communication Protocol PROFIBUS DP Protocol
Dimensions 133 x 122 x 257 mm
Design Reversing starter
Bus-Communication Yes
Outlet for Engine Brake Yes
Control Circuit Voltage Type DC
Control Supply Voltage (DC) Rated value: 20.4 V minimum to 28.8 V maximum
Motor Protection Full motor protection
Switching Contact Design Solid-state
Short-Circuit Protection Design Fuse
Service Power at AC-3, 400 V Rated value: 1,100 W
Service Power for Three-Phase Motors 0.14 kW minimum to 1.1 kW maximum at 400 V, 50 Hz
Adjustable Response Current Initial value: 0.3 A to final value: 3 A
Breaking Capacity Limit Short-circuit current (lcu) at 400 V rated value: 100 kA
Electrical Connection Tab terminals
Protection Class IP65
Ambient Operating Temperature -20 to +40 °C
Approvals General Product Approval, Declaration of Conformity, Type Test Certificates/Test Report, other
Additional Features 4DI 24 V DC, Brake contact 400 V AC/0.75 A, HAN Q4/2 - HAN 1NC

The Siemens 3RK1303-6BS74-3AA3 is a sophisticated PROFIBUS DP electronic switching device designed to offer reliable and efficient control for industrial applications. This reversing starter is engineered to provide full motor protection and electronic as well as thermal overload protection for three-phase motors with operating voltages ranging from 400 to 500 V ac and a service power at AC-3 at 400 V rated at 1.1 kW.

With an adjustable response current from 0.3 to 3 A, the device ensures precise protection for a wide range of motor sizes. The inclusion of a brake contact rated at 400 V ac/0.75 A adds versatility, allowing for rapid stopping of motors when necessary. The unit also features four digital inputs and one binary output for comprehensive control and feedback.

The solid-state design of the switching contact ensures durability and a long service life, while the fuse-based short-circuit protection provides peace of mind against electrical faults. The device's tab terminals facilitate straightforward electrical connections, and with an IP65 protection class, it is well-suited for use in demanding environments where dust and moisture resistance are paramount.

Measuring 130 mm in width, 250 mm in height, and 125 mm in depth, the Siemens 3RK1303-6BS74-3AA3 is compact enough to fit into various control cabinets and panels. It operates efficiently within an ambient temperature range of -20 to +40 °C, making it a robust choice for a wide array of industrial settings.

This electronic switching device is a testament to Siemens' commitment to quality, offering a reliable solution for motor control and protection in industrial automation systems.

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.

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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.

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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.

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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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Creating an account is incredibly simple and takes a matter of seconds. You can create a Marvo account at any time by clicking here and following the simple steps on screen. By creating a Marvo account you can store your contact details, delivery addresses, billing addresses and more, meaning that you can enjoy game-changing convenience faster than ever before.

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Frequently Asked Questions

What is the voltage range for the ECOFAST Electronic Switching?

The ECOFAST Electronic Switching operates within a voltage range of 400 to 500 V ac.

Can this device be used with PROFIBUS DP protocol?

Yes, the ECOFAST Electronic Switching supports PROFIBUS DP protocol for bus communication.

What are the dimensions of this electronic switching device?

The dimensions of the ECOFAST Electronic Switching are 133 mm in width, 122 mm in height, and 257 mm in depth.

What type of motor protection does the ECOFAST provide?

The ECOFAST provides full motor protection to ensure safe and reliable operation.

What is the range of the adjustable response current for the overload release?

The adjustable response current for the overload release ranges from 0.3 A to 3 A.

What is the breaking capacity limit for short-circuit current?

The breaking capacity limit for short-circuit current is rated at 100 kA at 400 V.

What type of electrical connection is used for the main current circuit?

The main current circuit uses tab terminals for its electrical connection.

What is the protection class of the ECOFAST Electronic Switching?

The ECOFAST Electronic Switching is rated at protection class IP65.

What is the ambient operating temperature range for this device?

The ambient operating temperature range for the ECOFAST Electronic Switching is from -20°C to +40°C.

Are there any certifications or approvals for the ECOFAST Electronic Switching?

The ECOFAST Electronic Switching comes with a general product approval and a Declaration of Conformity.

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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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