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Siemens 3RA2115-4AD18-1BB4 — Motor Starters

Siemens 3RA2115-4AD18-1BB4 SIRIUS Motor Starter

MPN3RA2115-4AD18-1BB4

Siemens SIRIUS 3RA2115-4AD18-1BB4 non-fused motor starter, size S00, direct starter, thermal bimetallic overload relay, Class 10 trip, 24 V DC coil, 14 A at 480 V AC-3.

Siemens 3RA2115-4AD18-1BB4 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2115-4AD18-1BB4 — Identification
ParameterValue
Product designationnon-fused motor starter 3RA2
Main circuit poles3
BrandSIRIUS
Load feeder sizeS00
Product design / constructiondirect starter
Circuit-breaker sizeS00
Included contactor (type)3RT2018-1BB41
Included circuit-breaker (type)3RV2011-4AA15
Included link module (type)3RA1921-1DA00
3RA2115-4AD18-1BB4 — Ratings & Performance
ParameterValue
Rated motor power at 400 V7 500 W
Operational current Ie, AC-3 at 400 V15.5 A
Rated voltage at AC-3, max.690 V
Rated motor power at 460/480 V (hp)10 hp
Rated motor power at 575/600 V (hp)10 hp
Rated current at 480 V14 A
Rated current at 600 V11 A
Rated operating frequency50 ... 60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Rated insulation voltage Ui (AC, pollution degree 3)690 V
Mechanical service life, typ. (switching cycles)30 000 000
3RA2115-4AD18-1BB4 — Protection & Tripping
ParameterValue
Trip classCLASS 10
Short-circuit protectionYes
Rated short-circuit current at 400 V (IEC 60947-4-1)153 000 A
Overload release setting range (current)11 ... 16 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)1
3RA2115-4AD18-1BB4 — Contacts & Control
ParameterValue
Rated value24 V
Auxiliary contacts, NO2
Auxiliary contacts, NC1
Auxiliary switch extensionYes
Switching contact typeelectromechanical
3RA2115-4AD18-1BB4 — Mechanical & Connection
ParameterValue
Main circuit connection typescrew-type terminals
Main contact conductor range (AWG)2x (20 ... 16), only for contactor 2x (18 ... 14), 2x 12
Mounting / fastening methodfor snapping onto 60 mm busbar systems
Mounting positionvertical
Width45 mm
Height200 mm
Depth155.1 mm
3RA2115-4AD18-1BB4 — Environmental
ParameterValue
Operating temperature range-20 ... +60 °C
Storage temperature range-50 ... +80 °C
Transport temperature range-55 ... +80 °C
Pollution degree3
Shock resistance (IEC 60068-2-27)6g / 11 ms

Product details

Integrated motor starter, size S00

The Siemens 3RA2115-4AD18-1BB4 is a SIRIUS non-fused motor starter, size S00, combining a contactor and a thermal bimetallic overload relay in one unit. It is rated as a direct starter and ships with the contactor 3RT2018-1BB41, link module 3RA1921-1DA00, and busbar adapter 8US1251-5DS10.

Motor power ratings across supply voltages

At 460/480 V it is rated 10 hp, and at 575/600 V also 10 hp. Lower-voltage ratings include 5 hp at 220/230 V and 3 hp at 200/208 V.

Mounting and panel integration

Fastens by snapping onto 60 mm busbar systems, with a vertical mounting position. Dimensions are 200 mm height, 45 mm width, and 155.1 mm depth, requiring 20 mm clearance upwards and 10 mm downwards. The supplied busbar adapter 8US1251-5DS10 simplifies integration into a standard panel busbar layout.

Environmental and operational limits

Pollution degree 3 suits industrial environments with conductive contamination.

MPN
3RA2115-4AD18-1BB4