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Siemens 3RA2120-4CA27-0AK6 — Motor Starters

Siemens 3RA2120-4CA27-0AK6

MPN3RA2120-4CA27-0AK6

FUSELESS LOAD FEEDER DIRECT START, AC 400V, SZ. S0, 16...22A, AC 110/120V 50/60HZ SCREW TERMINAL FOR DIN RAIL MOUNTING, TYPE OF ASSIGNMENT 2,IQ = 150KA (ALSO TYPE OF ASSIGNMENT 1) 1NO+1NC (CONTACTOR)

StockContact for availability
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RA2120-4CA27-0AK6 — Identification
ParameterValue
Product designationnon-fused load feeders 3RA2
Main circuit poles3
BrandSIRIUS
Load feeder sizeS0
Product design / constructiondirect starter
Circuit-breaker sizeS0
Included contactor (type)3RT2027-1AK60
Included circuit-breaker (type)3RV2021-4CA10
Included link module (type)3RA2921-1AA00

Ratings & Performance

3RA2120-4CA27-0AK6 — Ratings & Performance
ParameterValue
Rated motor power at 400 V11 000 W
Operational current Ie, AC-3 at 400 V22 A
Rated voltage at AC-3, max.690 V
Rated motor power at 460/480 V (hp)15 hp
Rated motor power at 575/600 V (hp)20 hp
Rated current at 480 V22 A
Rated current at 600 V21.9 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

Protection & Tripping

3RA2120-4CA27-0AK6 — 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)17 ... 22 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)2

Contacts & Control

3RA2120-4CA27-0AK6 — Contacts & Control
ParameterValue
Rated value690 V
Rated voltage range at 50 Hz110 V
Auxiliary switch extensionYes
Switching contact typeelectromechanical

Mechanical & Connection

3RA2120-4CA27-0AK6 — Mechanical & Connection
ParameterValue
Main circuit connection typescrew-type terminals
Main contact conductor range (AWG)2x (16 ... 12), 2x (14 ... 8)
Mounting / fastening methodscrew and snap-on mounting onto 35 mm standard mounting rail
Mounting positionvertical
Width45 mm
Height193.1 mm
Depth97.1 mm

Environmental

3RA2120-4CA27-0AK6 — Environmental
ParameterValue
Operating temperature range-20 ... +60 °C
Storage temperature range-50 ... +80 °C
Transport temperature range-50 ... +80 °C
Pollution degree3
Shock resistance (IEC 60068-2-27)6g / 11 ms
MPN
3RA2120-4CA27-0AK6