Siemens 3RW34
Discover the Siemens SIRIUS 3RW34, a compact 2-phase controlled soft starter for standard three-phase motor applications. Features an integrated bypass for energy efficiency and adjustable settings for smooth, reliable motor control.
Siemens SIRIUS 3RW34 Soft Starter
The Siemens SIRIUS 3RW34 is a compact and efficient soft starter designed for the smooth starting of three-phase asynchronous motors in standard applications. As a 2-phase controlled device, it effectively reduces starting current peaks and torque surges, thereby minimizing stress on the power supply network and mechanical drive components. The integrated bypass contact system significantly reduces power loss during operation, leading to increased energy efficiency and reduced heat dissipation in the control cabinet. With adjustable parameters for starting voltage and ramp-up time, the 3RW34 offers a reliable and cost-effective solution for applications such as pumps, fans, and conveyors.
Technical Specifications:
- Operating Voltage: 200 … 480 V AC
- Control Method: 2-phase controlled for balanced motor starting
- Integrated Bypass: Features a built-in bypass contact system to minimize energy consumption after ramp-up
- Adjustable Parameters: Settable starting voltage (40% to 100%) and ramp-up time (0 to 20 seconds)

| Brand | Siemens |
|---|---|
| Model | 3RW34 |
GENERAL DELIVERY INFORMATION
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Our Return & Refund Policy provides detailed information about options and procedures for returning your order.

