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Siemens 3RA2120-4AD26-0AP6 — Motor Starters

Siemens 3RA2120-4AD26-0AP6 SIRIUS Motor Starter

MPN3RA2120-4AD26-0AP6

Siemens SIRIUS 3RA2120-4AD26-0AP6 non-fused motor starter, direct starter design, Size S0, 7.5 kW at 400 V, Class 10 trip, thermal bimetallic overload, includes 3RT2026-1AP60 contactor and 3RA2921-1AA00 link module, 45 mm width, 155 mm depth, 260 mm height, snap-on 60 mm busbar mounting.

Siemens 3RA2120-4AD26-0AP6 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2120-4AD26-0AP6 — Identification
ParameterValue
Product designationnon-fused motor starter 3RA2
Main circuit poles3
BrandSIRIUS
Load feeder sizeS0
Product design / constructiondirect starter
Circuit-breaker sizeS0
Included contactor (type)3RT2026-1AP60
Included circuit-breaker (type)3RV2021-4AA10
Included link module (type)3RA2921-1AA00
3RA2120-4AD26-0AP6 — 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 V15.2 A
Rated current at 600 V12.2 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)10 000 000
3RA2120-4AD26-0AP6 — 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)2
3RA2120-4AD26-0AP6 — Contacts & Control
ParameterValue
Rated value690 V
Rated voltage range at 50 Hz176 ... 242 V
Auxiliary contacts, NO1
Auxiliary contacts, NC1
Auxiliary switch extensionYes
Switching contact typeelectromechanical
3RA2120-4AD26-0AP6 — Mechanical & Connection
ParameterValue
Main circuit connection typescrew-type terminals
Main contact conductor range (AWG)2x (16 ... 12), 2x (14 ... 8)
Mounting / fastening methodfor snapping onto 60 mm busbar systems
Mounting positionvertical
Width45 mm
Height260 mm
Depth155 mm
3RA2120-4AD26-0AP6 — 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

What this SIRIUS starter includes and how it mounts

The 3RA2120-4AD26-0AP6 is a factory-assembled SIRIUS non-fused motor starter combining a contactor and thermal overload in one S0-size package. It ships with the 3RT2026-1AP60 contactor and 3RA2921-1AA00 link module pre-wired, which cuts panel assembly time on repetitive motor feeder builds. Mounting is by snapping onto 60 mm busbar systems in a vertical position, with clearance requirements of 30 mm upward, 10 mm forward, 10 mm downward, and 9 mm at the side. The 45 mm width and 155 mm depth fit standard S0 feeder slots in distributed panel layouts.

Motor power coverage and trip coordination

The thermal bimetallic overload release is field-adjustable and compensates for ambient temperature changes during operation from -20 to +60 °C.

Frequently asked questions

What compliance documentation does Siemens provide for 3RA2120-4AD26-0AP6?

As a SIRIUS industrial control product, it carries CE marking for the European market and is designed to meet IEC/EN 60947-4-1 for motor starters. RoHS and REACH declarations are standard with the manufacturer's documentation package. UL/CSA listings apply for North American installations — verify the specific file number with the factory datasheet.

MPN
3RA2120-4AD26-0AP6