Siemens Sirius Soft starter S0, 200 - 480VAC, 15kW, 32A Part number 3RW4027-1BB04

Product Overview

Siemens SIRIUS 3RW4027-1BB04 soft starter is a compact motor control device designed to gently ramp up and ramp down three-phase motors, reducing mechanical stress and electrical surge during start-up. Rated for up to 15 kW at 400 V AC and 32 A, it offers integrated bypass and overload protection and is suitable for general industrial machinery where controlled motor starting and protection are required.

Key Features

• SIRIUS series soft starter for three-phase motors
• Soft start and soft stop control
• Rated current 32 A at 40 °C
• Up to 15 kW motor power at 400 V AC
• Integrated bypass contact system
• AC/DC control supply voltage capability
• DIN rail mountable with screw terminals

Technical Specifications

• Article Number: 3RW4027-1BB04
• Product Family: Siemens SIRIUS 3RW40 soft starters
• Device Type: Soft starter for three-phase motors
• Rated Operational Current Ie: 32 A at 40 °C
• Rated Motor Power: 15 kW at 400 V AC
• Supply Voltage Range: 200 … 480 V AC
• Control Supply Voltage: 24 V AC/DC control input
• Overload Protection: Integrated motor overload protection
• Bypass Contact: Yes (integrated)
• Mounting: DIN rail with screw terminals
• Protection Rating: IP20
• Operating Temperature: –25 °C to +60 °C

Compliance & Certifications

• CE conformity according to applicable EU directives
• Complies with industrial control equipment safety standards
• Designed to Siemens quality and reliability standards
• RoHS compliant for hazardous substance restrictions

Applications

This SIRIUS 3RW40 soft starter is used to control and protect three-phase motors in a variety of industrial applications such as conveyors, pumps, compressors and machine tools. It reduces mechanical stress on the driven equipment and improves power quality by limiting inrush current during motor startup and stopping sequences.