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Siemens 3RW4024-1BB15 — Soft Starters

Siemens 3RW4024-1BB15 SIRIUS Soft Starter, 12.5 A, Size S0

MPN3RW4024-1BB15
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Siemens SIRIUS 3RW4024-1BB15 soft starter, Size S0, 12.5 A at 40 °C, 110-230 V DC control supply, screw terminals, integrated bypass.

Siemens 3RW4024-1BB15 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW4024-1BB15 — Identification
ParameterValue
Product designationSoft starter
Product brand nameSIRIUS
3RW4024-1BB15 — Power & Motor Rating
ParameterValue
Rated operational current at 40 °C12.5A
Rated operational current at 50 °C11A
Rated operational current at 60 °C10A
Rated insulation voltage600V
Minimum settable current (% of Ie)20%
3RW4024-1BB15 — 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%
3RW4024-1BB15 — Protection & Features
ParameterValue
Motor overload protectionYes
Thermistor motor protectionNo
Adjustable current limitationYes
Inside-delta connectionNo
Intrinsic device protectionYes
Pollution degree3, acc. to IEC 60947-4-2
3RW4024-1BB15 — Mechanical
ParameterValue
Height125mm
Width45mm
Depth155mm
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, side15mm
3RW4024-1BB15 — 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 3RW4024-1BB15 is a SIRIUS soft starter rated 12.5 A at 40 °C, derating to 11 A at 50 °C and 10 A at 60 °C — so for a 7.5 kW motor on a 400 V line, you size the overload protection to the motor FLA, not the soft starter's maximum. The 110…230 V DC control supply is wide enough to drop into a 24 V DC panel only if you step it up; this part expects a nominal 110 V DC or higher. Integrated bypass contacts mean the thyristors are shorted out after start, so no continuous heat sink load — the 45 mm wide S0 frame fits a standard DIN-rail slot with 155 mm depth to clear the gland plate.

Fastening is screw and snap-on mounting — clips onto the DIN rail, then screw-secured for vibration resistance. Ambient operating range -25…+60 °C; storage -40…+80 °C.

Frequently asked questions

What is the datasheet for 3RW4024-1BB15?

Engineers need datasheet to verify fit and electrical ratings before design-in.

What is the price of 3RW4024-1BB15?

Buyers compare pricing to build BOM cost and negotiate with distributors.

Is 3RW4024-1BB15 in stock?

Inventory availability determines whether the part can be procured without long lead times.

What is the replacement for 3RW4024-1BB15?

When a part is obsolete or unavailable, a drop-in replacement is critical for continued production.

What is the cross reference for 3RW4024-1BB15?

Cross references help find equivalent parts from other brands or series when sourcing alternatives.

What are the dimensions of 3RW4024-1BB15?

Physical size must fit in the panel, especially for retrofit or space-constrained installations.

MPN
3RW4024-1BB15