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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RK1303-6BS74-3AA3 |
| Alternative Part Number | 3RK13036BS743AA3 |
| Manufacturer | Siemens |
| Product Type | PROFIBUS DP Electronic Switching |
| Operating Voltage Range | 400 to 500 V ac |
| Current Range | 0.3 to 3 A |
| Communication Protocol | PROFIBUS DP Protocol |
| Dimensions | 133 x 122 x 257 mm |
| Design | Reversing starter |
| Bus-Communication | Yes |
| Outlet for Engine Brake | Yes |
| Control Circuit Voltage Type | DC |
| Control Supply Voltage (DC) | Rated value: 20.4 V minimum to 28.8 V maximum |
| Motor Protection | Full motor protection |
| Switching Contact Design | Solid-state |
| Short-Circuit Protection Design | Fuse |
| Service Power at AC-3, 400 V | Rated value: 1,100 W |
| Service Power for Three-Phase Motors | 0.14 kW minimum to 1.1 kW maximum at 400 V, 50 Hz |
| Adjustable Response Current | Initial value: 0.3 A to final value: 3 A |
| Breaking Capacity Limit | Short-circuit current (lcu) at 400 V rated value: 100 kA |
| Electrical Connection | Tab terminals |
| Protection Class | IP65 |
| Ambient Operating Temperature | -20 to +40 °C |
| Approvals | General Product Approval, Declaration of Conformity, Type Test Certificates/Test Report, other |
| Additional Features | 4DI 24 V DC, Brake contact 400 V AC/0.75 A, HAN Q4/2 - HAN 1NC |
The Siemens 3RK1303-6BS74-3AA3 is a sophisticated PROFIBUS DP electronic switching device designed to offer reliable and efficient control for industrial applications. This reversing starter is engineered to provide full motor protection and electronic as well as thermal overload protection for three-phase motors with operating voltages ranging from 400 to 500 V ac and a service power at AC-3 at 400 V rated at 1.1 kW.
With an adjustable response current from 0.3 to 3 A, the device ensures precise protection for a wide range of motor sizes. The inclusion of a brake contact rated at 400 V ac/0.75 A adds versatility, allowing for rapid stopping of motors when necessary. The unit also features four digital inputs and one binary output for comprehensive control and feedback.
The solid-state design of the switching contact ensures durability and a long service life, while the fuse-based short-circuit protection provides peace of mind against electrical faults. The device's tab terminals facilitate straightforward electrical connections, and with an IP65 protection class, it is well-suited for use in demanding environments where dust and moisture resistance are paramount.
Measuring 130 mm in width, 250 mm in height, and 125 mm in depth, the Siemens 3RK1303-6BS74-3AA3 is compact enough to fit into various control cabinets and panels. It operates efficiently within an ambient temperature range of -20 to +40 °C, making it a robust choice for a wide array of industrial settings.
This electronic switching device is a testament to Siemens' commitment to quality, offering a reliable solution for motor control and protection in industrial automation systems.
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Frequently Asked Questions
What is the voltage range for the ECOFAST Electronic Switching?
The ECOFAST Electronic Switching operates within a voltage range of 400 to 500 V ac.
Can this device be used with PROFIBUS DP protocol?
Yes, the ECOFAST Electronic Switching supports PROFIBUS DP protocol for bus communication.
What are the dimensions of this electronic switching device?
The dimensions of the ECOFAST Electronic Switching are 133 mm in width, 122 mm in height, and 257 mm in depth.
What type of motor protection does the ECOFAST provide?
The ECOFAST provides full motor protection to ensure safe and reliable operation.
What is the range of the adjustable response current for the overload release?
The adjustable response current for the overload release ranges from 0.3 A to 3 A.
What is the breaking capacity limit for short-circuit current?
The breaking capacity limit for short-circuit current is rated at 100 kA at 400 V.
What type of electrical connection is used for the main current circuit?
The main current circuit uses tab terminals for its electrical connection.
What is the protection class of the ECOFAST Electronic Switching?
The ECOFAST Electronic Switching is rated at protection class IP65.
What is the ambient operating temperature range for this device?
The ambient operating temperature range for the ECOFAST Electronic Switching is from -20°C to +40°C.
Are there any certifications or approvals for the ECOFAST Electronic Switching?
The ECOFAST Electronic Switching comes with a general product approval and a Declaration of Conformity.
