Siemens 3RW4055-2BB44

SIRIUS 3RW4055-2BB44 Solid State Soft Starter, 230 VAC Coil, 3 Poles, IP00 Enclosure

  • Brand: SIRIUS
  • MPN: 3RW4055-2BB44
  • UPC: 754554923574
  • UNSPSC: 39121521
  • FGPN: SIE3RW40552BB44
  • Min. Order Qty: 1
  • Qty. Interval: 1
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SIRIUS 3RW4055-2BB44

SIRIUS Soft Starter, Solid State, 200/460 VAC, 134 A, 50/60 Hz, 75 kW, 75 hp Motor, 230 VAC Coil, 3 Pole, 3 Phase, Cage Clamp, S6, 2NO-1CO Auxiliary, IP00, -25 to 60 deg C Operating, 120 mm W x 250 mm D x 198 mm H

Amperage Rating : 134 A
Auxiliary Contact Rating : 2NO-1CO
Coil Voltage : 230 VAC
Connection Type : Cage Clamp
Dimensions : 120 mm W x 250 mm D x 198 mm H
Enclosure Type : IP00
Frequency Rating : 50/60 Hz
Motor Power : 75 hp
Number of Poles : 3
Operating Temperature : -25 to 60 deg C
Phase : 3
Size : S6
Type : Solid State
Voltage Rating : 200/460 VAC
Wattage : 75 kW
  • The space required by the compact SIRIUS 3RW40 soft starter is often only about one third of that required by a contactor assembly for wye-delta starting of comparable rating
  • This not only saves space in the control cabinet and on the standard mounting rail but also does away completely with the wiring work needed for wye-delta starters
  • At the same time the number of cables from the starter to the motor is reduced from six to three
  • Compact dimensions, short start-up times, easy wiring and fast commissioning make themselves felt as clear-cut cost advantages
  • The bypass contacts of these soft starters are protected during operation by an integrated solid-state arc quenching system
  • The starting current of particularly powerful operating mechanisms can place an unjustifiable load on the local supply system
  • Soft starters reduce this starting current by means of their voltage ramp
  • It leaves the set start ramp during the ramp-up the ramp gradient is fixed by the starting voltage and the ramp time as soon as the selected current limit is reached
  • From this moment the voltage of the soft starter is controlled so that the current supplied to the motor remains constant
  • As the result of this function the actual motor ramp-up can well take longer than the ramp time selected on the soft starter
  • Device versions with thermistor motor protection evaluation are available up to a rating of 55 kW (at 400 V)
  • Thermal overloading of the motor, open circuits and short circuits in the sensor circuit all result in the direct disconnection of the soft starter, The new series of devices comes with the polarity balancing control method, which is designed to prevent direct current components in two-phase controlled soft starters
  • Controlling the power semiconductors results not only in this asymmetry, however, but also in the previously mentioned direct current components which can cause severe noise generation on the motor at starting voltages of less than 50 %
  • The control method used for these soft starters eliminates these direct current components during the ramp-up phase and prevents the braking torque which they can cause. It creates a motor ramp-up that is uniform in speed, torque and current rise, thus permitting a particularly gentle, two-phase starting of the motors
  • The built-in auxiliary contact ensures user-friendly control and possible further processing within the system
  • Cost-efficient operation Reduction of current peaks, Avoidance of mains voltage fluctuations during starting, Reduced load on the power supply network, Reduction of the mechanical load in the operating mechanism
  • Considerable space savings and reduced wiring compared with conventional starters, Maintenance-free switching, Very easy handling
  • screw and snap-on mounting
  • 134 A at 40 deg C Current
  • 30 hp at 200/208 V 117 A, 40 hp at 220/230 V 117 A, 75 hp at 460/480 V 117 A
  • pdf Data/Spec Sheet

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