Siemens 3RW40461TB04 SIRIUS Soft Starter 45 kW (80 A) 3RW40461TB04

Product Description

Siemens 3RW40461TB04 is a SIRIUS soft starter that provides SCR-based controlled starting and ramp-down for three-phase motors. It is rated for 80 A and up to 45 kW at 400 V (50 hp at 480 V), accepts line voltages from 200 to 480 V AC, and uses a 24 V AC/DC control supply. The unit includes integrated bypass, thermistor motor protection, adjustable current protection, and is designed for 3-phase, 3-pole applications.

• Rated current 80 A; rated motor power 45 kW at 400 V (50 hp at 480 V).
• Line voltage 200–480 V AC, 50/60 Hz; control voltage 24 V AC/DC; 3-phase, 3-pole design.
• Integrated bypass, thermistor motor protection, adjustable current and motor overload protection; auxiliary contacts 2NO-1CO.

Product Highlights

SCR-based soft starting for 3-phase motors with integrated bypass and motor protection

Product Information

Standard Information

• Brand: SIEMENS
• Manufacturer Part Number: 3RW40461TB04
• Country of Origin: Czech Republic

Technical Specifications

• Manufacturer: Siemens
• MPN: 3RW40461TB04
• Series: SIRIUS 3RW40
• Product Type: Soft starter
• Rated Current: 80 A
• Rated Power (400 V): 45 kW
• Rated Power (480 V): 50 hp
• Input Voltage: 200 to 480 V AC
• Frequency: 50 to 60 Hz
• Control Voltage: 24 V AC/DC
• Phases: 3 Phase
• Poles: 3 Pole
• Connection Type: Screw-type terminals / Thread connection
• Auxiliary Contacts: 2NO-1CO
• Protection: Integrated bypass; thermistor motor protection; adjustable current and motor overload protection
• Enclosure Rating: IP00
• Operating Temperature: -25 to 60 °C
• Dimensions (HxWxD): 6.69 in x 2.76 in x 7.48 in
• Certifications: RoHS compliant; approvals include IEC, UL/CSA; options for ATEX/IECEx
• Datasheet: https://cache.industry.siemens.com/dl/files/945/109747945/att_1316539/v1/SIRIUS_IC10_complete_English_2025_202502271410306836.pdf
• Country of Origin: Czech Republic