Siemens 3RW40281BB15

SIRIUS 3RW40281BB15 Solid State Soft Starter, 110/230 VAC/VDC Coil, 3 Poles, IP20 Enclosure

  • Brand: SIRIUS
  • MPN: 3RW40281BB15
  • UPC: 754554958842
  • UNSPSC: 39121521
  • FGPN: SIE3RW40281BB15
  • Min. Order Qty: 1
  • Qty. Interval: 1
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SIRIUS 3RW40281BB15

The SIRIUS 3RW40 soft starters are characterized above all by their small space requirements. Integrated bypass contacts mean that no power loss has to be taken into the bargain at the power semiconductors (thyristors) after the motor has started up. This cuts down on heat losses, enabling a more compact design and making external bypass circuits superfluous. At the same time this soft starter comes with additional integrated functions such as adjustable current limiting, motor overload and intrinsic device protection, and optional thermistor motor protection. The higher the motor rating, the more important these functions because they make it unnecessary to purchase and install protection equipment such as overload relays. Internal intrinsic device protection prevents the thermal overloading of the thyristors and the power section defects this can cause. As an option the thyristors can also be protected by semiconductor fuses from short-circuiting. Thanks to integrated status monitoring and fault monitoring, this compact soft starter offers many different diagnostics options. Up to four LEDs and relay outputs permit differentiated monitoring and diagnostics of the operating mechanism by indicating the operating state as well as for example mains or phase failure, missing load, non-permissible tripping time/CLASS setting, thermal overloading or device faults. Soft starters rated up to 250 kW (at 400 V) for standard applications in three-phase networks are available. Extremely small sizes, low power losses and simple start-up are just three of the many advantages of the SIRIUS 3RW40 soft starters.

SIRIUS Soft Starter, Solid State, 400/600 VAC, 38 A, 50/60 Hz, 22 kW, 30 hp Motor, 110/230 VAC/VDC Coil, 3 Pole, Setting: 0 - 20 sec, 3 Phase, Screw, S0, 2NO-1CO Auxiliary, IP20, -25 to 60 deg C Operating, 45 mm W x 155 mm D x 125 mm H

Amperage Rating : 38 A
Auxiliary Contact Rating : 2NO-1CO
Coil Voltage : 110/230 VAC/VDC
Connection Type : Screw
Dimensions : 45 mm W x 155 mm D x 125 mm H
Enclosure Type : IP20
Frequency Rating : 50/60 Hz
Motor Power : 30 hp
Number of Poles : 3
Operating Temperature : -25 to 60 deg C
Phase : 3
Setting : 0 - 20 sec
Size : S0
Type : Solid State
Voltage Rating : 400/600 VAC
Wattage : 22 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, This process is ended either by completion of the motor ramp-up or by tripping by the intrinsic device protection or the motor overload protection
  • 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), A thermoclick measuring probe can be connected directly, as can a PTC of type A
  • 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
  • Soft starting/ramp-down, voltage ramp, integral bypass contact system, intrinsic device protection, motor overload protection, thermistor motor protection, integrated remote RESET and adjustable current limiting applications
  • screw and snap-on mounting
  • 38 A at 40 deg C Current
  • 25 hp at 460/480 V 34 A, 30 hp at 575/600 V 34 A
  • pdf Data/Spec Sheet https://www.frenchgerleman.com//ASSETS/DOCUMENTS/ITEMS/EN/Siemens_3RW40281BB15_Specification_Sheet.pdf

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