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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RW4026-1BB14 |
| Manufacturer | Siemens |
| Category | Soft Starts |
| Phase | 3 Phase |
| Operational Voltage | 200 to 480 V ac |
| Control Supply Voltage | AC/DC 110-230 V |
| Operational Current at 40°C | 25 A |
| Power at 400 V | 11 kW |
| Ambient Operating Temperature | -25 to +60 °C |
| Storage Temperature | -40 to +80 °C |
| Derating Temperature | 40 °C |
| Protection Class | IP20 |
| Mounting Type | Screw and snap-on mounting |
| Dimensions (Width x Height x Depth) | 45 mm x 125 mm x 155 mm |
| Installation Altitude | Up to 5,000 m above sea level |
| Commodity Code | 853710 |
| Connection Type | Screw terminals |
| Number of Poles | 3 for main current circuit |
| Auxiliary Contacts | 2 NO contacts, 1 CO contact |
| Conductor Cross-Section | Solid: 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), max. 1x 10 mm²; Finely stranded: 2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²) |
The Siemens 3RW4026-1BB14 soft starter is a compact and reliable solution designed to optimise the start-up process of three-phase motors. This soft starter is engineered to reduce the mechanical stress on motor control systems, making it an ideal choice for a wide range of industrial applications. With a current rating of 25 A and the capability to manage motors with a power output of up to 11 kW at 400 V in a 40 °C environment, it ensures smooth acceleration and deceleration, enhancing the longevity of your motor.
The unit operates within a supply voltage range of 200 to 480 V AC and accepts control voltages of 110 to 230 V AC/DC, providing flexibility for various electrical setups. The inclusion of an integrated bypass contact system and thyristors within its design allows for efficient operation and reduced power loss during run time.
The 3RW4026-1BB14 features intrinsic device protection and motor overload protection, safeguarding your equipment against potential damage caused by electrical anomalies. Additionally, it offers an adjustable current limitation to tailor the start-up process to specific motor requirements. The device is also designed with screw terminals for secure and straightforward installation.
This soft starter is housed in a robust enclosure with an IP20 protection rating, ensuring it is safeguarded against solid objects larger than 12 mm but not against water. It is suitable for installation in environments with an ambient temperature range of -25 to +60 °C, making it versatile for use in various industrial climates.
The Siemens 3RW4026-1BB14 soft starter is a testament to Siemens' commitment to quality, efficiency, and reliability in motor control technology. It is a valuable asset for any operation looking to improve the performance and protection of their motor-driven systems.
Commonly Asked Questions
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Frequently Asked Questions
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 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 during start-up and stop phases.
What are the voltage requirements for this soft starter?
The soft starter operates within a voltage range of 200 to 480 V AC, making it versatile for various industrial applications.
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.
What kind of protection does this soft starter provide?
The soft starter provides intrinsic device protection and motor overload protection, ensuring safe operation and longevity of the motor.
What is the ambient operating temperature range for this soft starter?
The soft starter is designed to operate within an ambient temperature range of -25 to +60 degrees Celsius, accommodating a variety of industrial environments.
What is the rated operational current of this soft starter?
The rated operational current of the soft starter at 40 degrees Celsius is 25 A.
Does this soft starter have a control supply voltage?
Yes, it has a control supply voltage that can be either AC or DC, with a range of 110 to 230 V.
What type of terminals does this soft starter have for wiring?
The soft starter is equipped with screw terminals, which provide a secure and reliable connection for wiring.
Can the current limitation be adjusted on this soft starter?
Yes, the soft starter allows for adjustable current limitation, which can be tailored to the specific start-up requirements of the motor.
Part conditions explained
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