Siemens 3RW3036-1BB14 SIRIUS Soft Starter 45A 22kW 200-480V

The Siemens 3RW3036-1BB14 is a SIRIUS series size S2 soft starter rated at 45 A / 22 kW at 400 V, designed for smooth starting and stopping of 3-phase induction motors. It accepts a wide main supply voltage of 200-480 V AC and a control supply of 110-230 V AC/DC. The integrated bypass contact system reduces steady-state power dissipation to just 6 W during continuous operation.

Technical specifications:

• MLFB: 3RW3036-1BB14
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Soft starter
• Size: S2
• Rated current at 40°C: 45 A
• Rated current at 50°C: 42 A
• Rated current at 60°C: 39 A
• Rated power at 400 V / 40°C: 22 kW
• Rated power at 230 V / 40°C: 11 kW
• UL rating at 460/480 V: 30 hp
• Operating voltage: 200-480 V AC
• Control supply voltage: 110-230 V AC/DC
• Operating frequency: 50-60 Hz
• Number of poles (main circuit): 3
• Integrated bypass contact: Yes
• Auxiliary contacts: 1 NO
• Insulation voltage: 600 V
• Thyristor blocking voltage (max): 1600 V
• Degree of pollution: 3 (IEC 60947-4-2)
• IP rating (front): IP20, finger-safe
• Operating temperature: -25 to +60°C
• Storage temperature: -40 to +80°C
• Derating temperature: 40°C
• Installation altitude: up to 5000 m
• Power loss at 40°C (operation): 6 W
• Dimensions (W x H x D): 55 x 160 x 170 mm
• Mounting: Screw and snap-on
• Terminals (main and control): Screw-type
• Conductor cross-section (main, solid): 2x 1.5-16 mm²
• Conductor cross-section (main, stranded): 1.5-35 mm²
• Minimum load: 10%
• Maximum wire length: 300 m

Features and benefits:

• Integrated bypass contact limits steady-state power loss to 6 W, reducing heat in the panel
• Thyristor power electronics deliver a controlled voltage ramp for smooth motor acceleration
• Wide operating voltage range (200-480 V AC) supports both European and North American motor voltages
• AC/DC control supply (110-230 V) simplifies integration into existing control panels
• Finger-safe IP20 front protection reduces installation hazards
• Screw and snap-on mounting allows DIN rail or direct panel installation

Applications:

• Controlled starting of 3-phase motors in pumps and fans
• Compressor and conveyor systems requiring smooth acceleration to reduce mechanical stress
• Industrial machinery where reduced inrush current at startup is required
• Motor control panels operating at altitudes up to 5000 m
• Panel builders requiring compact 55 mm width motor starters

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

Also known as: Siemens 3RW3036-1BB14, SIRIUS soft starter 45 A, 3RW3 soft starter S2.