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Siemens 3RA2120-1GA24-0BB4 — Motor Starters

Siemens 3RA2120-1GA24-0BB4 SIRIUS Motor Starter, 6.3 A AC-3

MPN3RA2120-1GA24-0BB4
Active

Siemens SIRIUS 3RA2120-1GA24-0BB4 direct-on-line starter, size S0, 6.3 A at 400 V AC-3, 24 V DC coil, Class 10, screw terminals, 45 mm width, 107 mm depth, 193 mm height.

$101.60Ref. price · indicative, final on quote
Siemens 3RA2120-1GA24-0BB4 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2120-1GA24-0BB4 — Identification
ParameterValue
Product designationDirect (on-line) starter
Main circuit poles3
BrandSIRIUS
Load feeder sizeS0
Product design / constructionfor standard rail or screw mounting
Circuit-breaker sizeS00
Included contactor (type)3RT2024-1BB40
Included circuit-breaker (type)3RV2011-1GA10
Included link module (type)3RA2921-1BA00
3RA2120-1GA24-0BB4 — Ratings & Performance
ParameterValue
Rated motor power at 400 V2 200 kW
Rated voltage at AC-3, max.690 V
Rated motor power at 460/480 V (hp)5 hp
Rated motor power at 575/600 V (hp)5 hp
Rated current at 480 V6.3 A
Rated current at 600 V6.3 A
Rated operating frequency50 ... 60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Rated insulation voltage Ui (AC, pollution degree 3)690 V
3RA2120-1GA24-0BB4 — 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)4.5 ... 6.3 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)2
3RA2120-1GA24-0BB4 — Contacts & Control
ParameterValue
Rated value24 ... 24 V
Control supply voltage typeDC
Auxiliary switch extensionYes
Switching contact typeelectromechanical
3RA2120-1GA24-0BB4 — Communication
ParameterValue
AS-Interface protocol supportNo
3RA2120-1GA24-0BB4 — Mechanical & Connection
ParameterValue
Mounting / fastening methodscrew and snap-on mounting onto 35 mm DIN rail
Mounting positionvertical
Width45 mm
Height193 mm
Depth107 mm
3RA2120-1GA24-0BB4 — 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

Panel fit and mounting constraints

The 3RA2120-1GA24-0BB4: The starter occupies 45 mm of DIN-rail width and extends 107 mm into the enclosure — the S0 frame size governs the gland-plate clearance and the wire-bend radius for the main circuit screw terminals. Mounting is vertical only, with screw and snap-on attachment to a 35 mm DIN rail; the specified clearance above the unit is 50 mm and 20 mm to the side for heat dissipation and wiring access.

Motor duty and overload protection

The maximum operating voltage for AC-3 switching is 690 V, and the supplied contactor (3RT2024-1BB40) and link module (3RA2921-1BA00) are matched to the S0 frame for thermal and magnetic coordination.

MPN
3RA2120-1GA24-0BB4