Siemens 3RW3018-1BB14 SIRIUS Soft Starter S00 17.6A 7.5kW 400V

The Siemens 3RW3018-1BB14 is a SIRIUS series soft starter in size S00, rated at 17.6 A and 7.5 kW at 400 V / 40°C. It provides thyristor-based soft starting for 3-phase motors across a wide supply range of 200-480 V AC, with an integrated bypass contact system that reduces power loss to 4 W during continuous operation.

Technical specifications:

• MLFB: 3RW3018-1BB14
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Soft starter
• Size: S00
• Operational current: 17.6 A at 40°C / 17 A at 50°C / 14 A at 60°C
• Motor power: 7.5 kW at 400 V / 40°C; 4 kW at 230 V / 40°C
• UL rating: 10 hp at 460/480 V; 3 hp at 220/230 V (50°C)
• Operating voltage: 200-480 V AC (-15% / +10%)
• Operating frequency: 50-60 Hz
• Control supply voltage: 110-230 V AC/DC
• Auxiliary contacts: 1 NO
• Insulation voltage: 600 V
• Degree of pollution: 3, per IEC 60947-4-2
• IP rating (front): IP20, finger-safe
• Operating temperature: -25 to +60°C
• Storage temperature: -40 to +80°C
• Dimensions (W x H x D): 45 x 95 x 150 mm
• Mounting: screw and snap-on, vertical surface +/-10° rotatable and tiltable
• Terminals (main and control): screw-type
• Main conductor cross-section: 2x (1-2.5 mm²) / 2x (2.5-6 mm²), solid or stranded
• Maximum installation altitude: 5,000 m
• Fault display: red indicator

Features and benefits:

• Integrated bypass contact system reduces continuous operating power loss to 4 W typical
• Thyristor-based control enables smooth, controlled motor acceleration
• Wide operating voltage range (200-480 V AC) covers both European and North American motor voltages
• Universal control supply (110-230 V AC/DC) simplifies wiring across different control circuits
• Compact S00 footprint at 45 mm wide suits space-constrained control panels
• Continuous operating current rated at 115% of Ie at 40°C

Applications:

• Soft starting of 3-phase motors up to 7.5 kW on 400 V industrial networks
• Pump and fan applications requiring reduced inrush current at start
• Conveyor systems where controlled ramp-up reduces mechanical shock
• Compressor drives on 200-480 V AC supplies
• Control panels with DIN rail or screw-mount assembly

Compliant with IEC 60947-4-2. Part of the Siemens SIRIUS range.

Also known as: Siemens 3RW3018-1BB14, SIRIUS 3RW30 soft starter, Siemens 17A soft starter S00.