Skip to main content
Log in
Siemens 3RA2120-4AE26-0AP0 — Motor Starters

Siemens 3RA2120-4AE26-0AP0 SIRIUS Motor Starter, 16 A AC-3

MPN3RA2120-4AE26-0AP0
Active

Siemens SIRIUS 3RA2120-4AE26-0AP0 direct online motor starter, size S0, 16 A AC-3 at 400 V, Class 10, 690 V max, screw and snap-on 35 mm DIN rail, spring-loaded terminals.

Siemens 3RA2120-4AE26-0AP0 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RA2120-4AE26-0AP0 — Identification
ParameterValue
Product designationDirect (on-line) starter
Main circuit poles3
BrandSIRIUS
Load feeder sizeS0
Product design / constructionfor standard rail or screw mounting
Circuit-breaker sizeS0
Included contactor (type)3RT2026-2AP00
Included circuit-breaker (type)3RV2021-4AA20
Included link module (type)3RA2921-2AA00
3RA2120-4AE26-0AP0 — Ratings & Performance
ParameterValue
Rated motor power at 400 V7 500 kW
Rated voltage at AC-3, max.690 V
Rated motor power at 460/480 V (hp)10 hp
Rated current at 480 V16 A
Rated current at 600 V16 A
Rated operating frequency50 ... 60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Rated insulation voltage Ui (AC, pollution degree 3)690 V
3RA2120-4AE26-0AP0 — 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)10 ... 16 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)2
3RA2120-4AE26-0AP0 — Contacts & Control
ParameterValue
Rated value690 V
Rated voltage range at 50 Hz230 ... 230 V
Control supply voltage typeAC
Auxiliary switch extensionYes
Switching contact typeelectromechanical
3RA2120-4AE26-0AP0 — Communication
ParameterValue
AS-Interface protocol supportNo
3RA2120-4AE26-0AP0 — Mechanical & Connection
ParameterValue
Mounting / fastening methodscrew and snap-on mounting onto 35 mm DIN rail
Mounting positionvertical
Width45 mm
Height243 mm
Depth107 mm
3RA2120-4AE26-0AP0 — 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

AC-3 duty and trip class — the load-side constraints

The 3RA2120-4AE26-0AP0: For a motor starting a high-inertia load (conveyor, fan), verify the acceleration time stays under that window — a longer ramp risks nuisance tripping.

Supplied as a factory-matched assembly

This starter ships with the contactor 3RT2026-2AP00 and the link module 3RA2921-2AA00 pre-assembled. The 45 mm width and 107 mm depth fit a standard 8-module enclosure row — plan for the 50 mm upward clearance and 20 mm forward clearance for cable entry and heat dissipation.

Active production — compliance documentation on file

The lifecycle stage is marked current — this is an active-production part, not a legacy or phase-out line. The operating temperature range is -20 to +60 °C with temperature compensation active across that band. Storage and transport limits extend to -50 to +80 °C, covering unheated warehouse or container transit.

MPN
3RA2120-4AE26-0AP0