The Siemens 3RW5543-6HF04 is a SIRIUS 3RW55 Failsafe High Performance soft starter with a rated operational current of 210 A at 40°C. It includes a removable HMI module with color display, integrated bypass, torque control, and supports optional communication modules for PROFINET, PROFIBUS, Modbus, and EtherNet/IP.
Item No :
3RW5543-6HF04Order(MOQ) :
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EXWProduct Origin :
CzechShipping Port :
WuhanLead Time :
3~5 daysWeight :
10kg| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Model | 3RW5543-6HF04 |
| Product Family | SIRIUS 3RW55 Failsafe |
| Product Type | High Performance Soft Starter |
| Rated Operational Current (Ie) | 210 A at 40°C |
| Rated Operational Voltage (Ue) | 200...480 V |
| Control Supply Voltage | 24 V AC/DC (±20%) |
| Rated Power (Standard Circuit, 400V) | 110 kW |
| Rated Power (Inside-Delta, 400V) | 200 kW |
| Rated Power (Standard Circuit, 230V) | 55 kW |
| Safety Function | STO (Safe Torque Off), SIL 3 / PL e |
| Integrated Bypass | Yes |
| Motor Overload Protection | Integrated electronic |
| Torque Control | Yes |
| Digital Inputs | 4 (1 fail-safe) |
| Digital Outputs | 3 (2 NO, 1 NC/CO) |
| Analog Outputs | 1 |
| OFF-Delay Time (Safety Request) | Max. 100 ms |
| Protection Class | IP00 |
| Dimensions (H x W x D) | 393 x 210 x 203 mm |
| Weight | Approx. 10.2 kg |
| Country of Origin | Czech Republic |
| Lifecycle Status | Delivery Release (PM300) |
| Model | Description | Typical Application |
|---|---|---|
| 3RW5543-6HF04 (this model) | 3RW55 Failsafe, 210A, 110kW @ 400V, STO | Safety-critical motor starting |
| 3RW5543-6HA14 | Same rating, 110-250V AC control voltage | Applications with AC control voltage |
| 3RW5536-6HF04 | 3RW55 Failsafe, 170A, 75kW @ 400V, STO | Smaller motor applications |
| 3RW5544-6HF04 | 3RW55 Failsafe, 250A, 132kW @ 400V, STO | Larger motor applications |
| 3RW5545-6HF04 | 3RW55 Failsafe, 315A, 160kW @ 400V, STO | Higher power applications |
| 3RW5980-0HF00 | High-Feature HMI Module | Optional local display and parameterization |
| 3RW5980-0CS00 | PROFINET Communication Module | Network integration |
| 3RW5980-0CP00 | PROFIBUS Communication Module | PROFIBUS network integration |
Q1: What is the primary function of the 3RW5543-6HF04?
It is a high-performance soft starter for smooth starting and stopping of three-phase asynchronous motors. It reduces starting current peaks, prevents supply voltage fluctuations, and minimizes mechanical stress on driven equipment. Its Failsafe designation means it includes an integrated Safe Torque Off (STO) function, making it suitable for safety-critical applications.
Q2: What safety integrity level does this soft starter support?
The integrated STO (Safe Torque Off) function is certified up to SIL 3 (IEC 61508) and PL e (ISO 13849-1). The OFF-delay time with safety-related request is maximum 100 ms, ensuring rapid and safe shutdown when required.
Q3: What communication options are available?
The soft starter supports optional plug-in communication modules for PROFINET, PROFIBUS, Modbus TCP, Modbus RTU, and EtherNet/IP . Without a communication module, the device can be parameterized via its integrated HMI module or PC software. The PROFINET High-Feature option provides advanced diagnostics and integration with TIA Portal.
Q4: What is the difference between standard and inside-delta connection?
In standard (inline) connection, the soft starter carries the full motor current, providing 110 kW at 400 V for this model. In inside-delta connection, the soft starter carries only 58% of the motor phase current, enabling it to control a larger motor — up to 200 kW at 400 V for the same 210 A device.
Q5: What are the typical applications for this soft starter?
Typical applications include pumps (with pump stop control to prevent water hammer), fans and compressors (with torque control for smooth acceleration), conveyors and mixers (with high starting torque requirements), and any application requiring safety-related shutdown with SIL 3 / PL e certification.
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