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Siemens 3RW3018-1BB14 — Soft Starters

Siemens 3RW3018-1BB14 SIRIUS Soft Starter, 17.6A, Size S00

MPN3RW3018-1BB14
Active

Siemens SIRIUS soft starter, 3RW3018-1BB14, size S00, 17.6 A at 40 °C, 110...230 V DC control supply, integrated bypass contactor, screw and snap-on mounting.

$225.00 – $285.27Ref. price · indicative, final on quote
Siemens 3RW3018-1BB14 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW3018-1BB14 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW3018-1BB14 — Power & Motor Rating
ParameterValue
Rated operational current at 40 °C17.6A
Rated operational current at 50 °C17A
Rated operational current at 60 °C14A
Rated insulation voltage600V
Minimum settable current (% of Ie)10%
3RW3018-1BB14 — Control & Connection
ParameterValue
Control supply voltage typeAC/DC
Main circuit terminal typescrew-type terminals
Auxiliary contact rating (UL)B300 / R300
Control supply voltage tolerance, AC 50 Hz (max.)10%
Control supply voltage tolerance, AC 50 Hz (min.)-15%
Control supply voltage tolerance, AC 60 Hz (max.)10%
Control supply voltage tolerance, AC 60 Hz (min.)-15%
Control supply frequency tolerance (max.)10%
Control supply frequency tolerance (min.)-10%
Operating frequency tolerance (max.)10%
Operating frequency tolerance (min.)-10%
3RW3018-1BB14 — Protection & Features
ParameterValue
Motor overload protectionNo
Thermistor motor protectionNo
Adjustable current limitationNo
Inside-delta connectionNo
Intrinsic device protectionNo
Pollution degree3, acc. to IEC 60947-4-2
3RW3018-1BB14 — Mechanical
ParameterValue
Height95mm
Width45mm
Depth150mm
Mounting positionWith vertical mounting surface +/-10° rotatable, with vertical mounting surface +/- 10° tiltable to the front and back
Fastening methodscrew and snap-on mounting
Mounting clearance, top60mm
Mounting clearance, bottom40mm
Mounting clearance, side15mm
3RW3018-1BB14 — 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

The Siemens 3RW3018-1BB14 is a SIRIUS soft starter in frame size S00, rated 17.6 A at 40 °C ambient with a 110…230 V DC control supply. The 17.6 A figure governs motor starting current — it is the maximum continuous current the thyristor stack can carry in standard duty, so size the motor FLA at or below that value. The integrated bypass contactor means the thyristors are shorted out after start, eliminating heat dissipation in the power section during run; this is the configuration for most conveyor, pump, and fan applications where prolonged starting is not required. The control wiring uses screw terminals for both the main current circuit and auxiliary/control circuit; the solid conductor range is 2x (0.25…2.5 mm²).

Derating and ambient limits

The 17.6 A rating holds at 40 °C; at 50 °C it derates to 17 A, and at 60 °C to 14 A. The derating temperature threshold is 40 °C, so a panel that runs warmer than 40 °C must use the lower current values for sizing.

Frequently asked questions

What are the key current ratings for 3RW3018-1BB14?

Rated 17.6 A at 40 °C, derating to 17 A at 50 °C and 14 A at 60 °C. Control supply is 110…230 V DC. Integrated bypass contactor handles the run current after start.

Where can I buy 3RW3018-1BB14?

Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

What is the mounting and wiring specification?

Screw and snap-on DIN-rail mounting, 45 mm wide. Main and control circuits use screw terminals; solid conductors 2x (0.25…2.5 mm²). Depth is 150 mm; allow 60 mm upward and 40 mm downward clearance.

MPN
3RW3018-1BB14