3RW4024-2BB04

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The Siemens 3RW4024-2BB04 is a high-quality soft starter designed for seamless integration into various industrial applications. This compact device is engineered to facilitate the controlled ramp-up and slow-down of three-phase motors, thereby reducing mechanical stress and enhancing the longevity of the motor and the system it powers.

With a power capacity of 5.5 kW and an operating voltage range of 200 to 480 V ac, this soft starter is versatile and suitable for a broad spectrum of applications. It is rated for a current of up to 12.5 A and is equipped with spring-type terminals for secure and reliable connections.

The unit's dimensions are 150 x 45 x 155 mm, making it an ideal choice for installations where space is at a premium. It also features integrated bridging contact systems and thyristors, intrinsic device protection, and motor overload protection, ensuring that it operates safely and efficiently.

The 3RW4024-2BB04 is designed for a 50 to 60 Hz operating frequency and can handle a continuous operating current of 115% of its rated value at 40°C. It also boasts a control supply voltage of 24 V AC/DC, accommodating a range of control circuit configurations.

This soft starter is a reliable solution for industries looking to optimise their motor start and stop processes, reduce energy consumption, and minimise wear and tear on mechanical components. Whether used in conveyor systems, pumps, fans, or compressors, the Siemens 3RW4024-2BB04 is an excellent choice for enhancing operational efficiency and performance.
Specification Description
Part Number 3RW4024-2BB04
Alternative Part Number 3RW40242BB04
Manufacturer Siemens
Type Soft Starter
Rated Operational Current 12.5 A at 40 °C
Power Rating 5.5 kW at 400 V
Operating Voltage Range 200 to 480 V AC
Control Supply Voltage 24 V AC/DC
Frequency 50 … 60 Hz
Dimensions (W x H x D) 150 x 45 x 155 mm
Mounting Type Screw and snap-on mounting
Number of Phases 3 Phase
Ambient Operating Temperature -25 … +60 °C
Storage Temperature -40 … +80 °C
Protection Class IP20
Motor Overload Protection Yes
Adjustable Current Limitation Yes
Integrated Bridging Contact System Yes
Control Electronics Voltage Type AC/DC
Mechanical Power at 400 V 5,500 W at 40 °C
Continuous Operating Current 115% of Ie at 40°C
Terminal Type Spring-loaded terminals
Number of Auxiliary Contacts 2 NO, 1 change-over switch
Conductor Cross-Section Range Main contacts: 1 … 10 mm², Auxiliary contacts: 2x (0.25 … 2.5 mm²) solid, 2x (0.25 … 1.5 mm²) finely stranded
Commodity Code 853710

What is the purpose of a soft starter?

A soft starter is designed to reduce the inrush current and torque of electric motors during start-up. This helps in minimising mechanical stress on the motor and the power system, leading to extended motor life and reduced maintenance.

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

Yes, the Siemens 3RW4024-2BB04 is specifically designed for use with three-phase motors, providing smooth ramp-up and ramp-down during start and stop operations.

What is the maximum operating voltage for this soft starter?

The maximum operating voltage for this soft starter is 480 V AC with a standard circuit.

Is there a specific ambient temperature range for operating this soft starter?

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

What type of terminals does this soft starter have?

The Siemens 3RW4024-2BB04 is equipped with spring-loaded terminals for both the main current circuit and the auxiliary and control current circuit.

How can I mount this soft starter?

This soft starter can be mounted using screw and snap-on mounting methods, allowing for flexibility in installation.

What is the rated operational current of this soft starter?

The rated operational current of the soft starter at 40°C is 12.5 A.

Does this soft starter offer motor overload protection?

Yes, the soft starter includes motor overload protection to help prevent damage to the motor due to excessive current draw.

What is the power loss during operation for this soft starter?

The typical active power loss at operating current and at 40°C during the operating phase is 2 W.

Can the current limit be adjusted on this soft starter?

Yes, the soft starter allows for adjustable current limitation, providing control over the start-up current and protecting the motor from high inrush currents.

  • Starting electric motors in a controlled manner to reduce inrush currents
  • Protecting mechanical systems from shock and stress during startup
  • Gradually ramping up the speed of conveyor belts in material handling systems
  • Controlling the startup of pumps to prevent water hammer and system damage
  • Managing the acceleration of fans in HVAC systems to reduce noise and wear
  • Soft starting compressors in refrigeration systems to extend equipment life
  • Initiating the operation of mixers and grinders in the food and beverage industry smoothly
  • Enhancing the longevity of machinery by reducing electrical and mechanical stress during power-up
  • Implementing in automation systems to improve the overall efficiency and performance of the process
  • Utilizing in textile machinery to ensure a gentle start and prevent damage to delicate materials

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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