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سافت‌استارتر زیمنس SIRIUS 3RW30، مدل 3RW3036-1BB04 سایز S2، نمای سه‌رخ از جلو

© Siemens AG

siriusSeries 3RW30Active

SIRIUS 3RW30 soft starter

SIRIUS 3RW30

Compact two-phase Siemens soft starter for motors up to 55 kW at 400 V (3.6 to 106 A), with voltage ramp and integral bypass for easy starting duty

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Price and delivery time are given after a technical review.

Overview

Overview

SIRIUS 3RW30 is the simplest Siemens soft starter in the Basic Performance class. It raises the motor voltage by phase angle control from an adjustable starting voltage up to the line voltage; starting current and torque stay lower in proportion, and the shocks of direct-on-line and star-delta starting disappear. The device is two-phase controlled: two antiparallel thyristors sit in phases L1 and L3, and after the start integral bypass contacts take over from the thyristors, so power loss while running is negligible and no external bypass is needed.

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Range

3.6 to 106 A rated current at 40 °C, equal to motors from 1.5 to 55 kW at 400 V, in four frame sizes: S00, S0, S2 and S3. Operational voltage 200 to 480 V; control supply 24 V AC/DC or 110 to 230 V AC/DC. Selection is made on the rated motor current, not on power alone: the starter rated current must not be lower than the motor rated current. The Siemens catalogue presents the 3RW30 for easy starting conditions and high switching frequencies: its reference conditions allow 20 starts per hour, against 5 for the 3RW40. These figures describe the 3RW301 to 3RW304 devices; the ultra-compact 3RW3003 (22.5 mm wide, 3 A, 1.1 kW at 400 V) lies outside them and is in phase-out.

What it does not have

The 3RW30 has the voltage ramp only. It has no soft stop (except the phased-out 3RW3003, which has a ramp-down), no current limiting, no ramp-up detection, no electronic motor overload protection and no intrinsic thyristor protection. The ramp time is at most 20 s and must be longer than the real acceleration time of the motor: if the ramp ends before the motor has run up, the bypass closes under AC3 current and can be damaged. Motor overload protection and short-circuit protection have to be provided separately.

Which motor, which load

In the Siemens selection table the 3RW30 is recommended for pumps and heat pumps and possible for hydraulic pumps, presses, conveyor belts, roller conveyors and screw conveyors. Siemens does not suggest it for compressors, escalators, fans and blowers, or any heavy starting duty (CLASS 20 and above); there the 3RW40 or 3RW55 is the better choice.

Soft starter or frequency converter

A soft starter only softens the start; after that the motor runs at line speed. According to Siemens there is no general answer and the application decides, but when the job does not need variable speed the soft starter is the first choice: lower capital cost, less space in the cabinet and little maintenance. If the process needs variable speed, or accuracy in speed and torque, a frequency converter such as the SINAMICS G120 is the right answer.

Features

  • Two-phase control with antiparallel thyristors in L1 and L3 and an integral bypass
  • 3.6 to 106 A rated current, motors 1.5 to 55 kW at 400 V
  • Four frame sizes S00, S0, S2 and S3, 45 to 70 mm wide
  • Voltage ramp with 40 to 100 % starting voltage and ramp time up to 20 s, set by potentiometers
  • Operational voltage 200 to 480 V
  • Control supply 24 V AC/DC or 110 to 230 V AC/DC
  • Screw terminals in all sizes and spring-type terminals for S00 and S0
  • Hybrid switching: the integral bypass keeps losses to a minimum after starting

Advantages

  • A simple replacement for direct-on-line and star-delta starting, with less wiring and space than a star-delta contactor assembly
  • Lower starting current peaks and line voltage dips, and no mechanical shock to gearbox and belts
  • After the start power loss drops by up to 90 %, and no extra heat is produced in the cabinet
  • Set with potentiometers, with no software or programming tool needed

Models and codes

Models and codes
ModelOrder codeCode typeAttributesRequest
SIRIUS 3RW3013, S00, 3.6 Aسایز S00، موتور ۱٫۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3013-1BB04 است3RW3013-1BB14Exact code
Size:
S00
Rated operational current Ie (40 °C):
3.6 A
Motor rating at 400 V:
1.5 kW
Motor rating at 230 V:
0.75 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3013, S00, 3.6 A
SIRIUS 3RW3014, S00, 6.5 Aسایز S00، موتور ۳ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3014-1BB04 است3RW3014-1BB14Exact code
Size:
S00
Rated operational current Ie (40 °C):
6.5 A
Motor rating at 400 V:
3 kW
Motor rating at 230 V:
1.5 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3014, S00, 6.5 A
SIRIUS 3RW3016, S00, 9 Aسایز S00، موتور ۴ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3016-1BB04 است3RW3016-1BB14Exact code
Size:
S00
Rated operational current Ie (40 °C):
9 A
Motor rating at 400 V:
4 kW
Motor rating at 230 V:
2.2 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3016, S00, 9 A
SIRIUS 3RW3017, S00, 12.5 Aسایز S00، موتور ۵٫۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3017-1BB04 است3RW3017-1BB14Exact code
Size:
S00
Rated operational current Ie (40 °C):
12.5 A
Motor rating at 400 V:
5.5 kW
Motor rating at 230 V:
3 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3017, S00, 12.5 A
SIRIUS 3RW3018, S00, 17.6 Aسایز S00، موتور ۷٫۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3018-1BB04 است3RW3018-1BB14Exact code
Size:
S00
Rated operational current Ie (40 °C):
17.6 A
Motor rating at 400 V:
7.5 kW
Motor rating at 230 V:
4 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3018, S00, 17.6 A
SIRIUS 3RW3026, S0, 25 Aسایز S0، موتور ۱۱ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3026-1BB04 است3RW3026-1BB14Exact code
Size:
S0
Rated operational current Ie (40 °C):
25 A
Motor rating at 400 V:
11 kW
Motor rating at 230 V:
5.5 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3026, S0, 25 A
SIRIUS 3RW3027, S0, 32 Aسایز S0، موتور ۱۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3027-1BB04 است3RW3027-1BB14Exact code
Size:
S0
Rated operational current Ie (40 °C):
32 A
Motor rating at 400 V:
15 kW
Motor rating at 230 V:
7.5 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3027, S0, 32 A
SIRIUS 3RW3028, S0, 38 Aسایز S0، موتور ۱۸٫۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3028-1BB04 است3RW3028-1BB14Exact code
Size:
S0
Rated operational current Ie (40 °C):
38 A
Motor rating at 400 V:
18.5 kW
Motor rating at 230 V:
11 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3028, S0, 38 A
SIRIUS 3RW3036, S2, 45 Aسایز S2، موتور ۲۲ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3036-1BB04 است3RW3036-1BB14Exact code
Size:
S2
Rated operational current Ie (40 °C):
45 A
Motor rating at 400 V:
22 kW
Motor rating at 230 V:
11 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3036, S2, 45 A
SIRIUS 3RW3037, S2, 63 Aسایز S2، موتور ۳۰ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3037-1BB04 است3RW3037-1BB14Exact code
Size:
S2
Rated operational current Ie (40 °C):
63 A
Motor rating at 400 V:
30 kW
Motor rating at 230 V:
18.5 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3037, S2, 63 A
SIRIUS 3RW3038, S2, 72 Aسایز S2، موتور ۳۷ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3038-1BB04 است3RW3038-1BB14Exact code
Size:
S2
Rated operational current Ie (40 °C):
72 A
Motor rating at 400 V:
37 kW
Motor rating at 230 V:
22 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3038, S2, 72 A
SIRIUS 3RW3046, S3, 80 Aسایز S3، موتور ۴۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3046-1BB04 است3RW3046-1BB14Exact code
Size:
S3
Rated operational current Ie (40 °C):
80 A
Motor rating at 400 V:
45 kW
Motor rating at 230 V:
22 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3046, S3, 80 A
Show 2 more models
Models and codes
ModelOrder codeCode typeAttributesRequest
SIRIUS 3RW3047, S3, 106 Aسایز S3، موتور ۵۵ کیلووات در ۴۰۰ ولت، ترمینال پیچی و تغذیهٔ کنترل ۱۱۰ تا ۲۳۰ ولت AC/DC؛ همتای ۲۴ ولت AC/DC آن 3RW3047-1BB04 است3RW3047-1BB14Exact code
Size:
S3
Rated operational current Ie (40 °C):
106 A
Motor rating at 400 V:
55 kW
Motor rating at 230 V:
30 kW
Operational voltage:
200 … 480 V
Control supply:
110 … 230 V AC/DC
Request SIRIUS 3RW3047, S3, 106 A
SIRIUS 3RW3003, 22.5 mm (phase-out)مدل فوق‌فشردهٔ ۲۲٫۵ میلی‌متری، ۳ آمپر و ۱٫۱ کیلووات در ۴۰۰ ولت؛ Industry Mall آن را از ۰۱٫۱۰٫۲۰۲۲ در مرحلهٔ phase-out و به‌عنوان قطعهٔ یدکی ثبت کرده و نسخهٔ ترمینال فنری آن 3RW3003-2CB54 است3RW3003-1CB54Exact code
Width:
22.5 mm
Rated operational current Ie (40 °C):
3 A
Motor rating at 400 V:
1.1 kW
Lifecycle:
Phase-out since 01.10.2022
Request SIRIUS 3RW3003, 22.5 mm (phase-out)

Technical specifications

Check the specifications against the data sheet of the exact code before ordering.
مشخصات عمومی
Motor rating at 400 VMotor rating at 400 V1.5 … 55 kW
Rated operational current Ie (40 °C)Rated operational current Ie (40 °C)3.6 … 106 A
Rated operational voltageRated operational voltage200 … 480 V AC
Frame sizesFrame sizesS00, S0, S2, S3
Performance classPerformance classBasic Performance
Motor controlMotor controlTwo-phase (L1, L3), integral bypass contacts
StandardStandardIEC/EN 60947-4-2
راه‌اندازی و توقف
Start modeStart modeVoltage ramp
Starting voltageStarting voltage40 … 100 %
Maximum ramp timeMaximum ramp time20 s
Reference conditions, normal start (CLASS 10)Reference conditions, normal start (CLASS 10)3 s ramp, 300 % starting current, 20 starts/h, 30 % ON time
Stop modeStop modeCoasting (no soft stop; the phased-out 3RW3003 has a ramp-down)
کنترل و تغذیه
Control supply voltageControl supply voltage24 V AC/DC or 110 … 230 V AC/DC
TerminalsTerminalsScrew; spring-type up to S0 (main circuit from S2: screw)
حفاظت
Motor overload protectionMotor overload protectionExternal overload relay or motor starter protector
Feeder short-circuit protectionFeeder short-circuit protectionMotor starter protector or fuses (type 1); SITOR semiconductor fuses (type 2)
نصب و محیط
Dimensions with screw terminalsDimensions with screw terminalsS00 45 × 95 × 151; S0 45 × 125 × 151; S2 55 × 144 × 168; S3 70 × 160 × 186 mm (W×H×D)
Maximum motor cable lengthMaximum motor cable length300 m
Ambient temperatureAmbient temperature40 rated; 60 max. with derating °C
Installation altitudeInstallation altitude1000 without derating; max. 5000 (voltage max. 460 V above 2000) m
Power loss when bypassedPower loss when bypassedapprox. 21 at 100 A (55 kW motor); approx. 300 without bypass W

Modules and accessories

  • Link module for motor starter protector

    Mechanical and electrical link module for connecting the soft starter directly to a 3RV motor starter protector

  • Infeed terminal (S00, S0)

    Infeed terminal for sizes S00 and S0

  • Terminal cover for box terminals (S2, S3)

    Terminal cover for the box terminals of sizes S2 and S3

  • Terminal cover for cable lug and busbar connection (S3)

    Terminal cover for cable-lug and busbar connection in size S3

  • Auxiliary terminal (S3)

    Auxiliary terminal for size S3

Documents

Official manufacturer links

Applications

  • Pumps and heat pumps (the application Siemens recommends it for)
  • Hydraulic pumps
  • Presses
  • Conveyor belts and roller conveyors
  • Screw conveyors
  • Replacing direct-on-line or star-delta starting under easy starting conditions

Frequently asked questions

Which motors is the 3RW30 for, and how do I size it?

For three-phase asynchronous motors up to 55 kW at 400 V. Size it from the rated motor current: the rated current of the soft starter (3.6 to 106 A) must not be lower than that of the motor. The kW figures in the ordering table are guide values for normal starting (CLASS 10). The Siemens reference conditions for the 3RW30 are a ramp time of at most 3 s, 300 % starting current, 20 starts per hour, 30 % ON time, 40 °C ambient and altitude up to 1000 m. If your duty is heavier, a larger device or the 3RW40 is needed.

Does the 3RW30 protect the motor against overload?

No. The 3RW30 has no electronic motor overload protection and no intrinsic thyristor protection. Motor protection has to come from an overload relay (3RU or 3RB series) or a 3RV motor starter protector, and the fuses and switching devices in the feeder must be sized for direct starting and the local short-circuit conditions. If you want protection inside the starter, look at the 3RW40.

Does the 3RW30 have a soft stop? What about pumps?

No; when the command is removed the power to the motor is cut and the motor coasts to a stop (only the 3RW3003 had a ramp-down, and it is now in phase-out). For pumps with water hammer Siemens points to the 3RW40 to reduce it and to the 3RW55 with its pump stop function for the best result.

What if the motor needs more than 20 seconds to start?

The maximum ramp time of the 3RW30 is 20 s and the bypass closes when the ramp ends. If the motor has not reached speed by then, AC3 current flows through the bypass and can damage it, because the 3RW30 has no ramp-up detection. For longer starts Siemens recommends a suitably sized 3RW40 or a soft starter of the 3RW5 series (for example the 3RW55).

When should I choose a frequency converter such as the SINAMICS G120 instead?

When the motor has to run at different speeds in operation, or the process needs speed and torque accuracy. A soft starter only softens the start and does not change the running speed. When variable speed is not needed Siemens regards the soft starter as the first choice because it needs less capital, space and maintenance.

Where do I connect power-factor correction capacitors?

Never on the output of the soft starter. Connecting capacitors to the output terminals of the 3RW30/3RW40 damages the device. If they are needed they must be on the line side, and they must not actively control the power factor during starting and coasting down; active filters must not run in parallel with the motor either.

How do I read a 3RW30 order code?

The two digits after 3RW30 give the current and size; 3RW3026, for example, is size S0 at 25 A. In 3RW3026-1BB14 the digit after the dash is the connection type (1 screw, 2 spring-type for S00 and S0) and the second-to-last digit is the control supply: 0 for 24 V AC/DC and 1 for 110 to 230 V AC/DC. So 3RW3026-1BB04 is the same device with a 24 V supply.

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Need SIRIUS 3RW30 soft starter?

Send your order code or requirement; after a technical review we give you the price and delivery time.

Request this product