Siemens 3RW3026-1BB14 SIRIUS Soft Starter S0 25A 11kW 200-480V

The Siemens 3RW3026-1BB14 is a SIRIUS soft starter in S0 frame size, rated 25 A at 40°C and 11 kW at 400 V. It controls 3-phase motor acceleration and deceleration using thyristors with an integrated bypass contact system, reducing power dissipation to 8 W during continuous operation. The unit accepts a main circuit voltage of 200-480 V AC and a control supply of 110-230 V AC/DC across 50/60 Hz.

Technical specifications:

• MLFB: 3RW3026-1BB14
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Soft starter
• Frame size: S0
• Operational current: 25 A at 40°C / 23 A at 50°C / 21 A at 60°C
• Motor power at 400 V (40°C): 11 kW
• Motor power at 230 V (40°C): 5.5 kW
• Motor power at 460/480 V (50°C, UL): 15 hp
• Operating voltage: 200-480 V AC (-15% / +10%)
• Control supply voltage: 110-230 V AC (50/60 Hz) / 110-230 V DC
• Number of poles (main circuit): 3
• Auxiliary contacts: 1 NO
• Integrated bypass contact system: Yes
• Insulation voltage: 600 V
• Thyristor blocking voltage (max): 1600 V
• Power loss at 40°C: 8 W
• IP rating (front): IP20, finger-safe
• Mounting: screw and snap-on
• Terminal type: screw-type (main and auxiliary/control circuits)
• Dimensions (W x H x D): 45 x 125 x 150 mm
• Operating temperature: -25 to +60°C
• Installation altitude: up to 5000 m
• Degree of pollution: 3 (IEC 60947-4-2)

Features and benefits:

• Integrated bypass contact system limits in-operation power loss to 8 W, reducing panel heating
• Thyristor-based voltage ramp reduces mechanical shock and inrush current at motor start
• Control voltage range 110-230 V AC/DC suits a wide variety of existing control circuit designs
• Snap-on or screw mounting for flexible DIN rail and back-panel installation
• Rated for installation altitudes up to 5000 m above sea level
• Fault signal indicated by red display for straightforward on-panel diagnostics

Applications:

• Soft starting and stopping of 3-phase AC motors up to 11 kW in industrial plant rooms
• Pump and fan drives where smooth acceleration reduces water hammer and belt stress
• Conveyor and compressor systems requiring limited starting current
• Motor control centres and switchgear panels in manufacturing and process automation
• Installations requiring a wide control voltage range or high-altitude site rating

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

Also known as: Siemens 3RW3026-1BB14, SIRIUS 3RW30 soft starter 25A, Siemens soft starter S0 11kW.