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Siemens 3RW4037-1BB04

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Marvo Stock ID MV-221K
HS Code 85371098
SKU 3RW4037-1BB04
Condition Used
Category Soft Starts
Warranty 12 months
Weight (kg) 1.00
Length (mm) 320.00
Width (mm) 250.00
Height (mm) 250.00

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Specification & Description

Specification Description
Part Number 3RW4037-1BB04
Alternative Part Number 3RW40371BB04
Manufacturer Siemens
Category Soft Starts
Description Sirius soft starter S2 63 A, 30 kW/400 V, 24 V AC/DC, with screw terminals
Height 169.00 mm
Width 685.00 mm
Depth 195.00 mm
Operating Current at 40°C 63 A
Operating Current at 50°C 58 A
Operating Current at 60°C 53 A
Mechanical Power at 230V 18,500 W
Mechanical Power at 400V 30,000 W
Mechanical Performance (hp) 15 hp at 200/208 V
Operating Frequency 50 … 60 Hz
Operating Voltage 200 … 480 V
Control Supply Voltage 24 V AC/DC
Mounting Type Screw and snap-on mounting
Number of Poles 3 for main current circuit
Electrical Connection Screw-type terminals for main and auxiliary/control current circuit
Auxiliary Contacts 0 NC, 2 NO, 1 CO
Conductor Cross-Section Solid: 2x (1.5 ... 16 mm²), Stranded: 0.75 ... 35 mm², Finely Stranded: 0.75 ... 25 mm²
Ambient Operating Temperature -25 … +60 °C
Storage Temperature -40 … +80 °C
Protection Class IP00
Commodity Code 85371099

The Siemens 3RW4037-1BB04 is a high-quality soft starter designed for seamless integration into various industrial motor starting applications. This Sirius soft starter is engineered to provide efficient control and protection for three-phase motors, with an operational current rating of up to 63 A and a power output capacity of 30 kW at 400 V in a standard circuit at 40°C.

Crafted for durability and reliability, the 3RW4037-1BB04 features an integrated bypass contact system and thyristors, ensuring smooth operation and longevity. The device offers intrinsic device protection and motor overload protection, safeguarding your equipment against potential damage caused by electrical faults.

With an adjustable current limitation, this soft starter allows for precise control over the starting and stopping of motors, reducing mechanical stress on the motor and the driven equipment. It operates within a voltage range of 200 to 480 V and can handle a minimum load of 20% of the motor current, making it versatile for a wide range of applications.

The 3RW4037-1BB04 is designed with a compact form factor, measuring 55 mm in width, 160 mm in height, and 170 mm in depth, which allows for easy installation in space-constrained environments. The unit can be mounted using screw and snap-on methods, providing flexibility in installation.

This soft starter is suitable for use in various industrial environments, with an operating temperature range of -25 to +60°C and a storage temperature range of -40 to +80°C. It also features a degree of pollution of 3, according to IEC 60947-4-2, ensuring it can withstand challenging industrial conditions.

The Siemens 3RW4037-1BB04 is a robust and efficient solution for motor control applications, offering enhanced performance and protection to meet the demands of modern industrial settings.

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 purpose of a soft starter like this one?

A soft starter is designed to reduce the inrush current and torque of electric motors during startup. This helps in reducing mechanical stress on the motor and the electrodynamic stresses on the power cables and electrical distribution network, extending the lifespan of the system.

Can this soft starter be used with three-phase motors?

Yes, the Siemens Soft Starter is suitable for use with three-phase motors, providing efficient control and protection during startup.

Is there an integrated bypass contact system in this soft starter?

Yes, the soft starter comes with an integrated bypass contact system, which helps to reduce power loss and heat generation once the motor reaches full speed.

Does this soft starter offer motor overload protection?

Yes, it includes motor overload protection to prevent damage to the motor due to excessive current or prolonged overloading.

What is the rated operational current of this soft starter?

The rated operational current of the soft starter at 40°C is 63 A.

What is the control voltage for this soft starter?

The control voltage for this soft starter is 24 V AC/DC.

What type of terminals does this soft starter have for electrical connections?

This soft starter is equipped with screw terminals for secure and reliable electrical connections.

Can the current limit be adjusted on this soft starter?

Yes, the soft starter allows for adjustable current limitation, providing flexibility and control over the starting current of the motor.

What is the protection class of this soft starter?

The protection class for this soft starter is IP00.

What is the ambient operating temperature range for this soft starter?

The ambient operating temperature range for this soft starter is from -25°C to +60°C.

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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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