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Siemens 3RW4047-2TB04 — Soft Starters

Siemens 3RW4047-2TB04 SIRIUS Soft Starter, 106 A, Size S3

MPN3RW4047-2TB04
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Siemens SIRIUS 3RW4047-2TB04 soft starter, size S3, 106 A at 40 °C, 50/60 Hz, 600 V insulation, screw-type terminals, thyristor-controlled.

StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RW4047-2TB04 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS

Power & Motor Rating

3RW4047-2TB04 — Power & Motor Rating
ParameterValue
Rated operational current at 40 °C106A
Rated operational current at 50 °C98A
Rated operational current at 60 °C90A
Rated insulation voltage600V
Minimum settable current (% of Ie)20%

Control & Connection

3RW4047-2TB04 — Control & Connection
ParameterValue
Control supply voltage typeAC/DC
Rated voltage at 50 Hz24V
Rated voltage at 60 Hz24V
Main circuit terminal typescrew-type terminals
Auxiliary contact rating (UL)B300 / R300
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%

Protection & Features

3RW4047-2TB04 — Protection & Features
ParameterValue
Motor overload protectionYes
Thermistor motor protectionYes
Adjustable current limitationYes
Inside-delta connectionNo
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2

Mechanical

3RW4047-2TB04 — Mechanical
ParameterValue
Height170mm
Width70mm
Depth190mm
Mounting positionWith additional fan: With vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back Without additional fan: With vertical mounting surface +/-10° rotatable, with vertical mounting surface +/- 10° t
Fastening methodscrew and snap-on mounting
Mounting clearance, top60mm
Mounting clearance, bottom40mm
Mounting clearance, side30mm

Environmental

3RW4047-2TB04 — Environmental
ParameterValue
Operating temperature range-25 ... +60°C
Ambient class during operation (IEC 60721)3K6 (no formation of ice, no 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)

Product details

106 A at 40 °C — the number that decides the motor

The 3RW4047-2TB04: Thyristor-based output stages handle the inrush without mechanical contact wear. Adjustable current limitation and built-in motor overload protection mean you can set the ramp ceiling and let the soft starter guard the winding during start.

Mounting and wiring — fits a standard panel slot

The S3 frame measures 170 mm high by 70 mm wide by 190 mm deep. Screw and snap-on mounting to DIN rail — no bracket kit needed. Clearance: 60 mm above, 40 mm below, 30 mm at the sides. Auxiliary terminals take 24 to 14 AWG. Screw-type termination throughout — torque to spec, no special crimp tooling required.

Operating envelope and compliance

Runs on 50 or 60 Hz supply, 24 V control voltage at both frequencies. Insulation rated 600 V, pollution degree 3 per IEC 60947-4-2 — suitable for industrial environments with conductive dust or condensation. Mounting position is flexible: vertical surface with up to +/-90° rotation when using the optional fan, or +/-10° rotation without it.

Frequently asked questions

Where can I buy 3RW4047-2TB04 and get a price?

This part is available to order.

MPN
3RW4047-2TB04