Siemens 3RW3046-1BB14 SIRIUS Soft Starter S3 80A 45kW 200-480V AC

The Siemens 3RW3046-1BB14 is a SIRIUS soft starter in frame size S3, rated at 80 A operational current at 40°C and 45 kW motor output at 400 V. It uses thyristor power electronics combined with an integrated bypass contact system to deliver smooth, controlled acceleration of 3-phase AC motors. The unit accepts a main supply of 200-480 V AC and a control supply of 110-230 V AC/DC for wide installation flexibility.

Technical specifications:

• MLFB: 3RW3046-1BB14
• Manufacturer: Siemens
• Product line: SIRIUS
• Product designation: Soft starter
• Size: S3
• Operational current: 80 A at 40°C / 73 A at 50°C / 66 A at 60°C
• Motor power at 400 V / 40°C: 45 kW
• Motor power at 230 V / 40°C: 22 kW
• Operating voltage: 200-480 V AC, 50/60 Hz
• Control supply voltage: 110-230 V AC/DC
• Insulation voltage: 600 V
• Main circuit poles: 3
• Auxiliary contacts: 1 NO
• Terminal type (main and control): screw-type
• IP rating (front): IP20, finger-safe
• Mounting: screw and snap-on
• Dimensions (W x H x D): 70 x 170 x 190 mm
• Operating temperature: -25 to +60°C
• Derating temperature: 40°C
• Installation altitude: up to 5000 m
• Degree of pollution: 3, per IEC 60947-4-2
• Typical power loss at 40°C: 12 W
• UL rating: 50 hp at 460/480 V, 25 hp at 220/230 V

Features and benefits:

• Integrated bypass contact system reduces heat dissipation during continuous steady-state motor operation
• Thyristor power electronics enable controlled voltage ramp-up for smooth motor acceleration
• Wide operating voltage range (200-480 V AC) covers both 230 V and 400 V motor networks
• Control supply of 110-230 V AC/DC is compatible with common industrial control circuits
• Snap-on or screw mounting with up to 10° tilt for flexible enclosure positioning
• Rated for installation altitudes up to 5000 m above sea level

Applications:

• Soft starting of 3-phase motors up to 45 kW in industrial machinery
• Pump and fan drives requiring gradual speed ramp-up to limit mechanical stress
• Conveyor and compressor systems needing controlled motor acceleration
• Motor control panels operating in pollution degree 3 environments

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

Also known as: Siemens 3RW3046-1BB14, SIRIUS 3RW30 soft starter 80A.