Skip to main content
Log in
Siemens 3RA2150-4UA35-0NB3 — Motor Starters

Siemens 3RA2150-4UA35-0NB3 SIRIUS Direct Starter, AC-3 40 A

MPN3RA2150-4UA35-0NB3
Active

Siemens SIRIUS 3RA2150-4UA35-0NB3 direct-on-line starter, Size S2, AC-3 40 A at 400 V, Trip Class 10, screw-type terminals, 55 × 150 × 274 mm.

Siemens 3RA2150-4UA35-0NB3 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2150-4UA35-0NB3 — Identification
ParameterValue
Product designationDirect (on-line) starter
Main circuit poles3
BrandSIRIUS
Load feeder sizeS2
Product design / constructionfor standard rail or screw mounting
Circuit-breaker sizeS2
Included contactor (type)3RT2035-1NB30
Included circuit-breaker (type)3RV2032-4UA10
Included link module (type)3RA2931-1AA00
3RA2150-4UA35-0NB3 — Ratings & Performance
ParameterValue
Rated motor power at 400 V18 500 kW
Rated voltage at AC-3, max.690 V
Rated current at 480 V40 A
Rated current at 600 V40 A
Rated operating frequency50 ... 60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Rated insulation voltage Ui (AC, pollution degree 3)690 V
3RA2150-4UA35-0NB3 — Protection & Tripping
ParameterValue
Trip classCLASS 10
Short-circuit protectionYes
Rated short-circuit current at 400 V (IEC 60947-4-1)150 000 A
Overload release setting range (current)32 ... 40 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)2
3RA2150-4UA35-0NB3 — Contacts & Control
ParameterValue
Rated value20 ... 33 V
Rated voltage range at 50 Hz20 ... 33 V
Control supply voltage typeAC/DC
Auxiliary switch extensionYes
Switching contact typeelectromechanical
3RA2150-4UA35-0NB3 — Communication
ParameterValue
AS-Interface protocol supportNo
3RA2150-4UA35-0NB3 — Mechanical & Connection
ParameterValue
Mounting / fastening methodscrew and snap-on mounting to two 35 mm DIN rails
Mounting positionvertical, horizontal
Width55 mm
Height274 mm
Depth150 mm
3RA2150-4UA35-0NB3 — Environmental
ParameterValue
Operating temperature range-20 ... +60 °C
Storage temperature range-50 ... +80 °C
Transport temperature range-50 ... +80 °C
Shock resistance (IEC 60068-2-27)6g / 11 ms

Product details

Motor switching duty — AC-3 40 A at 400 V

The 3RA2150-4UA35-0NB3: The supplied contactor is a 3RT2035-1NB30, paired with link module 3RA2931-1AA00 — the assembly is a factory-matched direct-on-line starter, not a field-built combination.

Panel integration — dual DIN rail footprint

Mounts via screw and snap-on to two 35 mm DIN rails, in vertical or horizontal orientation — the 55 mm width and 150 mm depth fit standard S2 feeder profiles. Clearance requirements: 50 mm upwards, 32 mm forwards, 10 mm downwards, 10 mm at the side, 0 mm backwards — plan the enclosure depth and gland plate accordingly.

Environmental range and compliance

Operates from -20 to +60 °C with temperature compensation across the same range; storage and transport limits extend from -50 to +80 °C. RoHS substance prohibitance date is 03/01/2017 — compliance documentation (RoHS, REACH) is available through the standard Siemens declaration channels.

Frequently asked questions

What are the key ratings for 3RA2150-4UA35-0NB3?

Trip Class 10 overload protection. Control voltage range 20 to 33 V, drawing 2 VA at 50/60 Hz.

What panel space does 3RA2150-4UA35-0NB3 require?

Dimensions are 55 mm wide, 150 mm deep, 274 mm high. Mounts on two 35 mm DIN rails with 50 mm upward clearance, 32 mm forward, 10 mm downward, 10 mm side clearance, and 0 mm backward.

MPN
3RA2150-4UA35-0NB3