Siemens 3RW5225-1AC04 Soft Starter

Siemens 3RW5225-1AC04 Soft Starter (SIRIUS 3RW52)

Product Description
Siemens 3RW5225-1AC04 is a SIRIUS 3RW52 General Performance Soft Starter designed for smooth starting and stopping of three-phase asynchronous motors. It reduces motor starting current and mechanical stress by controlling the motor voltage during acceleration and deceleration, improving system reliability and equipment lifetime.

Technical Parameters

• Brand: Siemens
• Model: 3RW5225-1AC04
• Product Type: Soft Starter
• Series: SIRIUS 3RW52
• Rated Operating Voltage: 200…480 V AC
• Rated Current: 63 A
• Control Voltage: 24 V AC/DC
• Number of Controlled Phases: 3 phases
• Motor Power Rating:
  • Approx. 30 kW at 400 V AC (in-line connection)
  • Up to approx. 55 kW at 400 V AC (inside-delta connection)
• Starting Voltage: 30…100% adjustable
• Ramp Time: 0…20 s adjustable
• Current Limiting Range: 130…700%
• Integrated Bypass Contact System: Yes
• Terminals: Screw terminals
• Analog Output: Supported
• Communication Options: PROFINET / PROFIBUS / Modbus TCP / Modbus RTU / EtherNet/IP (via optional modules)
• Mounting: Screw fixing / control cabinet installation

Advantages & Features

• Original Siemens SIRIUS soft starter solution
• Reduces motor inrush current during startup
• Minimizes mechanical shock and vibration
• Extends motor and equipment service life
• Integrated bypass contact reduces power losses during normal operation
• Compact design saves cabinet space
• Supports industrial communication expansion modules
• Reliable operation for demanding motor applications

Applications

• Pumps and water treatment systems
• Fans and ventilation equipment
• Compressors
• Conveyors
• Industrial machinery
• Production lines
• Factory automation systems

Notes

• Confirm motor rated power and current before installation.
• Check supply voltage and control voltage compatibility.
• Ensure correct parameter settings for acceleration and deceleration ramps.
• Use suitable protection devices according to motor and system requirements.
• Disconnect power before installation or maintenance.