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Specification & Description
The Siemens 3RK1304-5KS40-3AA3 is a high-performance reversing starter designed to offer reliable and efficient control for three-phase motors. This robust component is engineered to facilitate reverse starting operations, making it an ideal choice for a variety of industrial applications where motor direction change is a requirement.
Crafted with precision, the reversing starter boasts an electromechanical switching design and comes equipped with electronic overload protection, ensuring your motor is safeguarded against potential overcurrent scenarios. With a trip class of CLASS 10, it provides quick response to overload conditions, enhancing the protection of your motor.
The unit operates at a supply voltage of 24 V DC, with a permissible range between 20.4 V and 28.8 V, catering to a wide array of industrial power requirements. It is capable of handling an operating current of 2 A at AC-3 at 400 V, with a service power rated at 900 W for three-phase motors, making it suitable for motors with a power rating of up to 0.9 kW at 400 V.
The Siemens 3RK1304-5KS40-3AA3 is designed for straightforward installation with a screw fixing mounting type and can be positioned both vertically and horizontally, providing flexibility in integration with existing systems. Its compact dimensions, with a height of 230 mm, width of 110 mm, and depth of 150 mm, allow for efficient use of space within control cabinets.
For communication and diagnostics, the reversing starter supports both PROFIBUS DP and PROFINET protocols, offering seamless integration into modern industrial networks. The unit also features four digital inputs, which are parameterizable for customised control schemes.
Encased in an IP65 rated housing, the reversing starter is protected against dust ingress and low-pressure water jets from any direction, ensuring reliable operation even in harsh industrial environments. Additionally, it is designed to withstand vibrations up to 2g and shock resistance up to 15g / 11 ms, testifying to its durability and resilience.
The Siemens 3RK1304-5KS40-3AA3 is a testament to quality engineering, providing a reliable solution for motor control applications that demand precision, durability, and versatility.
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Frequently Asked Questions
What is the voltage range for the DC supply of this reversing starter?
The DC supply voltage range for this reversing starter is 20.4 V to 28.8 V.
Can this reversing starter be used for direct starting?
No, the Siemens 3RK1304-5KS40-3AA3 is not designed for direct starting. It is specifically designed for reverse starting.
What is the protection class of this reversing starter?
The protection class for this reversing starter is IP65, indicating a high level of protection against dust and water ingress.
What are the ambient operating temperature limits for this device?
The ambient operating temperature range for this device is from -25°C to +55°C.
Is this reversing starter compatible with PROFIBUS DP and PROFINET protocols?
Yes, the reversing starter supports both PROFIBUS DP and PROFINET protocols for communication.
What is the rated operational current for this reversing starter at AC-3, 400 V?
The rated operational current for the reversing starter at AC-3, 400 V is 2 A.
What is the mechanical service life of the main contacts in this reversing starter?
The mechanical service life of the main contacts in the Siemens 3RK1304-5KS40-3AA3 is typically 30 million switching cycles.
Does this reversing starter have a motor brake output?
Yes, it includes a motor brake output and supports brake control with 400 V AC.
What type of motor protection does this reversing starter provide?
This reversing starter provides solid-state motor protection.
How many digital inputs does this reversing starter have?
The reversing starter is equipped with 4 digital inputs.
Can the digital inputs on this reversing starter be parameterized?
Yes, the digital inputs on this reversing starter are parameterizable.
What is the maximum permissible voltage for safe isolation between the main and auxiliary circuit?
The maximum permissible voltage for safe isolation between the main and auxiliary circuit is 400 V.
What is the trip class of this reversing starter?
The trip class for this reversing starter is CLASS 10.
What is the resistance to shock and vibration for this reversing starter?
The reversing starter has a shock resistance of 15g / 11 ms and a vibration resistance of 2g.
