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Siemens 3RW5215-3AC05 — Soft Starters

Siemens 3RW5215-3AC05 SIRIUS Soft Starter, 200-600 VAC

MPN3RW5215-3AC05
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Siemens SIRIUS 3RW5215-3AC05 soft starter, 200-600 VAC, minimum load 11.5 A, trip class 10A/10E/20E, PROFIBUS, PROFINET, Modbus RTU/TCP, EtherNet/IP, CE, UL, CSA, screw fixing, 275 x 170 x 152 mm.

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MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW5215-3AC05 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW5215-3AC05 — Power & Motor Rating
ParameterValue
Rated motor power at 400 V (40 °C)11 kW
Rated motor power at 230 V (40 °C)5.5 kW
Rated operational current at 40 °C43.3 A
Rated operational current at 50 °C39 A
Rated operational current at 60 °C33.9 A
Rated insulation voltage600 V
Minimum settable current (% of Ie)15 %; Relative to smallest settable Ie
Power loss during startup (50 °C)318 W

Control & Connection

3RW5215-3AC05 — Control & Connection
ParameterValue
Control supply voltage typeAC/DC
Rated voltage at 50 Hz24 V
Rated voltage at 60 Hz24 V
Main circuit terminal typescrew-type terminals
Control circuit wire range, solid2x (0.25 ... 1.5 mm²)
Control circuit wire range, finely stranded (with ferrule)2x (0.25 ... 1.5 mm²)
Analog outputYes; 4 ... 20 mA (default) / 0 ... 10 V (parameterizable with High Feature HMI)
Auxiliary contact rated current, AC-15 at 250 V3 A
Auxiliary contact rating (UL)R300-B300
Control supply voltage tolerance, AC 50 Hz (max.)20 %
Control supply voltage tolerance, AC 50 Hz (min.)-20 %
Control supply voltage tolerance, AC 60 Hz (max.)20 %
Control supply voltage tolerance, AC 60 Hz (min.)-20 %
Control supply frequency tolerance (max.)10 %
Control supply frequency tolerance (min.)-10 %
Operating frequency tolerance (max.)10 %
Operating frequency tolerance (min.)-10 %
Operating voltage tolerance, inside-delta (max.)10 %
Operating voltage tolerance, inside-delta (min.)-15 %

Protection & Features

3RW5215-3AC05 — Protection & Features
ParameterValue
Motor overload protectionYes; Electronic motor overload protection
Thermistor motor protectionNo
Adjustable current limitationYes
Inside-delta connectionYes
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2

Mechanical

3RW5215-3AC05 — Mechanical
ParameterValue
Height275 mm
Width170 mm
Depth152 mm
Weight2.1 kg
Mounting position+/- 10° rotation possible and can be tilted forward or backward on vertical mounting surface
Fastening methodscrew fixing
Mounting clearance, top100 mm
Mounting clearance, bottom75 mm
Mounting clearance, side5 mm
Mounting clearance, front10 mm

Environmental

3RW5215-3AC05 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C; Please observe derating at temperatures of 40 °C or above
Storage / transport temperature range-40 ... +80 °C
Max. installation altitude5 000 m; Derating as of 1000 m, see catalog
Ambient class during operation (IEC 60721)3K6 (no ice formation, only occasional condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6
Ambient class during transport (IEC 60721)2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)

Specifications

3RW5215-3AC05 — Specifications
ParameterValue
Trip ClassCLASS 10A (default) / 10E / 20E; acc. to IEC 60947-4-2
Number Of Controlled Phases3
Utilization category according to IEC 60947-4-2AC 53a
Product Feature Integrated Bypass Contact SystemYes
Start-Up Ramp Time Of Soft Starter0 ... 20 s

Electrical

3RW5215-3AC05 — Electrical
ParameterValue
Current Limiting Value [%] Adjustable130 ... 700 %
Starting Voltage [%]30 ... 100 %
Stopping Voltage [%]50 %; non-adjustable

Product details

The Siemens SIRIUS 3RW5215-3AC05 is a current-production soft starter for three-phase induction motors, rated for line voltages of 200 to 600 VAC. Its minimum settable operating current is 11.5 A. The trip class is configurable: default CLASS 10A, with selectable 10E and 20E profiles per IEC 60947-4-2. The unit supports PROFIBUS, PROFINET, Modbus RTU, Modbus TCP, and EtherNet/IP natively — five fieldbus protocols on a single device, no option card swapping. That makes it straightforward to drop into a multi-vendor control architecture without a gateway. The analog output is 4-20 mA (default) or 0-10 V (parameterizable via the High Feature HMI), which gives the DCS or PLC a direct feedback signal of motor current or torque without a separate transducer.

Mounting, wiring, and environment

Mounting is screw-fixing to a flat back panel (no DIN-rail clip on this frame size). Clearance requirements: 100 mm above, 75 mm below, 10 mm in front, 5 mm at the sides, and 0 mm behind (panel-mount flush). The solid wire terminals accept 2x 1.0 to 2.5 mm² and 2x 2.5 to 10 mm² conductors, so you can feed both the incoming line and the motor cable through the same clamp without a separate terminal block. The shock rating is 15 g / 11 ms, dropping to 12 g / 11 ms if the potential contact lifting limit is a concern. The mounting position allows +/- 10° rotation and tilt forward or backward on a vertical surface.

It carries CE, UL, and CSA approvals, so it is accepted across North America and the European Union without a separate certification project.

Frequently asked questions

Where can I buy the Siemens 3RW5215-3AC05 soft starter?

This part is sourced to order against an RFQ. Submit a request for quote; pricing and lead time are confirmed at that point.

What is the trip class of 3RW5215?

The default trip class is CLASS 10A per IEC 60947-4-2, with selectable 10E and 20E profiles available through parameterization.

What fieldbus protocols does the 3RW5215-3AC05 support?

It supports PROFIBUS, PROFINET, Modbus RTU, Modbus TCP, and EtherNet/IP natively on the same device.

What wire sizes does the 3RW5215-3AC05 accept?

The solid-wire terminals accept 2x 1.0 to 2.5 mm² and 2x 2.5 to 10 mm² conductors.

MPN
3RW5215-3AC05