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3RW4026-1BB05

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Marvo Stock ID MV-7G5A
HS Code 85371098
SKU 3RW4026-1BB05
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 3RW4026-1BB05
Manufacturer Siemens
Product Type SIRIUS Soft Starter
Series S0
Operational Current at 40 °C 25 A
Operational Current at 50 °C 23 A
Operational Current at 60 °C 21 A
Mechanical Power Output at 400 V 11 kW
Mechanical Power Output at 500 V 15 kW
Operating Frequency 50 ... 60 Hz
Operating Voltage 400 ... 600 V AC
Control Supply Voltage 24 V AC/DC
Control Supply Voltage Frequency 50 Hz, 60 Hz
Insulation Voltage Rated Value 600 V
Degree of Pollution 3, according to IEC 60947-4-2
Reference Code Q (according to EN 61346-2), G (according to DIN 40719 extended according to IEC 204-2)
Integrated Bypass Contact System Yes
Thyristors Yes
Intrinsic Device Protection Yes
Motor Overload Protection Yes
Adjustable Current Limitation Yes
Size of Engine Control Device S0
Width 45 mm
Height 125 mm
Depth 155 mm
Mounting Type Screw and snap-on mounting
Mounting Position Vertical +/-90° rotatable, +/- 22.5° tiltable (with fan), Vertical +/-10° rotatable (without fan)
Required Spacing for Mounting Upwards: 60 mm, At the side: 15 mm, Downwards: 40 mm
Wire Length Maximum 300 m
Number of Poles for Main Circuit 3
Electrical Connection Type Screw-type terminals for main and auxiliary/control circuit
Number of Auxiliary Contacts 2 NO, 1 CO
Conductor Cross-Sections Various sizes for solid and finely stranded wires with core end processing
Protection Class IP IP20
Ambient Operating Temperature -25 ... +60 °C
Ambient Storage Temperature -40 ... +80 °C
Derating Temperature 40 °C
Environmental Category IEC 60721

The Siemens 3RW4026-1BB05 is a high-quality soft starter designed for seamless integration into various industrial motor control applications. This SIRIUS soft starter is engineered to facilitate smooth start and stop operations for three-phase motors, ensuring a reduction in mechanical stress and an increase in the lifespan of your machinery.

With a rated operational current of 25 A at 40 °C and the capability to manage motors up to 15 kW at 500 V, this soft starter is a robust solution for medium-sized motor applications. It operates effectively within a voltage range of 400-600 V AC and is equipped with a 24 V AC/DC control supply voltage, making it versatile for different power supply systems.

The 3RW4026-1BB05 comes with an integrated bypass contact system and thyristors, which contribute to its efficiency and reliability. It also boasts intrinsic device protection and motor overload protection, ensuring your equipment is safeguarded against potential electrical issues.

This soft starter is designed with user convenience in mind, featuring adjustable current limitation and an external reset function. The absence of an inside-delta circuit and motor brake output simplifies the device for straightforward use in various industrial settings.

Constructed to meet the demands of industrial environments, the 3RW4026-1BB05 has a compact form factor with dimensions of 45 mm in width, 125 mm in height, and 155 mm in depth. It can be easily mounted using screw and snap-on methods, and it supports a maximum wire length of 300 m for flexible installation options.

The device is also designed to withstand challenging conditions, with an operational temperature range of -25 to +60 °C and a storage temperature range of -40 to +80 °C. It is rated at an insulation voltage of 600 V and has a degree of pollution of 3, according to IEC 60947-4-2, ensuring reliable performance in various industrial environments.

For those seeking a dependable and efficient solution to manage the start-up of their motors, the Siemens 3RW4026-1BB05 soft starter offers a blend of performance, protection, and ease of use, making it a valuable addition to any industrial motor control system.

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Frequently Asked Questions

What is the purpose of a soft starter?

A soft starter is designed to control the acceleration and deceleration of three-phase motors, reducing the mechanical stress on the motor and the electrical stress on the power supply. This helps in extending the lifespan of the motor and associated equipment.

Can the soft starter be used for motor overload protection?

Yes, the soft starter has motor overload protection functionality, which helps to prevent damage to the motor due to excessive current draw or overheating.

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

Yes, the Siemens 3RW4026-1BB05 soft starter comes with an integrated bypass contact system, which helps to reduce power loss and heat generation once the motor reaches full speed.

What are the voltage requirements for this soft starter?

The soft starter operates at a standard circuit rated voltage of 400 to 600 V AC, with a control supply voltage of 24 V AC/DC.

What is the rated operational current of this soft starter?

The rated operational current of the soft starter at 40°C is 25 A.

What are the ambient temperature operating limits for this soft starter?

The soft starter can operate within an ambient temperature range of -25°C to +60°C.

What type of protection does the soft starter provide?

The soft starter provides protection with a class IP20 rating, ensuring protection against solid objects larger than 12.5 mm but not against water.

What is the maximum installation altitude for the soft starter?

The soft starter can be installed at altitudes up to 5,000 meters above sea level without derating.

How can I adjust the motor current for overload protection?

The soft starter allows for adjustable motor current settings for motor overload protection, with a minimum rated value of 10 A.

What are the dimensions of the soft starter?

The soft starter has a width of 45 mm, a height of 125 mm, and a depth of 155 mm.

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