Overview
The Siemens 3RW3017-1BB14 is a SIRIUS S00-series soft starter designed for controlled motor acceleration and deceleration. This soft starter uses variable phase-angle voltage control to smoothly ramp motor voltage from a configurable start level up to line voltage, significantly reducing inrush current and mechanical stress on three-phase induction motors. The integrated bypass allows continuous run-time at full voltage once the motor reaches operating speed, minimizing heat dissipation and extending component life.
Key Features
- Variable phase-angle control for smooth soft starting and ramp-down
- Integrated bypass for efficient continuous operation at full voltage
- Rated for motors up to 5.5kW (7.5HP) at 400VAC / 3HP at lower supply voltages
- Control voltage: 110–230V AC/DC, 50–60 Hz operation
- IP20 rated enclosure; -25°C to +60°C ambient operating range
- DIN rail mounting with screw terminals; compact footprint (95mm H × 45mm W × 150mm D)
Technical Specifications
The 3RW3017-1BB14 operates across a broad AC supply range and delivers consistent performance across standard industrial power systems:
- Supply Voltage (3-phase): 200–480VAC (208V, 240V, 400V compatible)
- Rated Current: 12.5A at 40°C ambient; 12A at 50°C
- Rated Power: 5.5kW at 400VAC, 40°C; 3kW at 230VAC; 3HP at 200VAC
- Control Voltage: 110–230V AC/DC
- Line Frequency: 50–60 Hz
- Number of Poles: 3 (three-phase)
- Bypass Configuration: Integrated bypass contactor
- Terminal Type: Screw terminals
- Enclosure Rating: IP20
- Operating Temperature: -25°C to +60°C
- Mounting: DIN rail
- Dimensions: 95mm (H) × 45mm (W) × 150mm (D)
Typical Applications
Soft starters reduce mechanical shock and electrical stress in demanding applications. Common uses include:
- Centrifugal pumps and fluid transfer systems
- Conveyor belts and screw conveyors
- Compressors and pressure vessels (where torque limiting is critical)
- Fans and blowers in HVAC systems
- Any three-phase induction motor requiring smooth, controlled acceleration
Compatibility & Replacements
The 3RW3017-1BB14 is a direct member of the Siemens SIRIUS 3RW30 soft starter family, designed to work with standard three-phase industrial motor circuits. It integrates with any control system using 110–230V AC/DC control signals and standard DIN rail enclosures. For lower power requirements, Siemens offers the 3RW3016-1BB14 (4kW) and 3RW3014-1BB14 (3kW) variants within the same series. Always verify supply voltage and motor horsepower ratings before installation. New in box condition ensures factory-sealed quality and full manufacturer warranty coverage.
