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Siemens 3RA2120-1JE24-0BB4 — Motor Starters

Siemens 3RA2120-1JE24-0BB4 SIRIUS Motor Starter, 10 A AC-3

MPN3RA2120-1JE24-0BB4
Active

Siemens SIRIUS 3RA2120-1JE24-0BB4 direct-on-line starter, Size S0, 10 A at 400 V AC-3, 690 V max, Class 10, 45 mm width, screw and snap-on 35 mm DIN rail mounting.

Siemens 3RA2120-1JE24-0BB4 datasheet (PDF)
StockContact for availability
Lead time3-5 Days wk
MOQ1 pcs
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
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Specifications

Identification

3RA2120-1JE24-0BB4 — Identification
ParameterValue
Product designationDirect (on-line) starter
Main circuit poles3
BrandSIRIUS
Load feeder sizeS0
Product design / constructionfor standard rail or screw mounting
Circuit-breaker sizeS0
Included contactor (type)3RT2024-2BB40
Included circuit-breaker (type)3RV2021-1JA20
Included link module (type)3RA2921-2AA00

Ratings & Performance

3RA2120-1JE24-0BB4 — Ratings & Performance
ParameterValue
Rated motor power at 400 V4 000 kW
Rated voltage at AC-3, max.690 V
Rated motor power at 460/480 V (hp)7.5 hp
Rated motor power at 575/600 V (hp)10 hp
Rated current at 480 V10 A
Rated current at 600 V10 A
Rated operating frequency50 ... 60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Rated insulation voltage Ui (AC, pollution degree 3)690 V

Protection & Tripping

3RA2120-1JE24-0BB4 — 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)7 ... 10 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)2

Contacts & Control

3RA2120-1JE24-0BB4 — Contacts & Control
ParameterValue
Rated value24 ... 24 V
Control supply voltage typeDC
Auxiliary switch extensionYes
Switching contact typeelectromechanical

Communication

3RA2120-1JE24-0BB4 — Communication
ParameterValue
AS-Interface protocol supportNo

Mechanical & Connection

3RA2120-1JE24-0BB4 — Mechanical & Connection
ParameterValue
Mounting / fastening methodscrew and snap-on mounting onto 35 mm DIN rail
Mounting positionvertical
Width45 mm
Height243 mm
Depth107 mm

Environmental

3RA2120-1JE24-0BB4 — 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

Active SIRIUS direct-on-line starter, 10 A AC-3, 690 V

The 3RA2120-1JE24-0BB4: The starter includes a supplied contactor (3RT2024-2BB40) and link module (3RA2921-2AA00), making it a pre-assembled combination for motor starting applications up to 10 hp at 575/600 V.

Class 10 trip, spring terminals, DIN-rail mount

The main circuit uses spring-loaded terminals (cage-clamp style), so no screw-torque check is needed on the power wiring — push the stripped conductor in and it's locked.

Sourcing and compliance

The operating temperature range is -20 to +60 °C, with storage and transport limits of -50 to +80 °C. The unit is designed for standard rail or screw mounting and carries the SIRIUS product brand.

Frequently asked questions

How do I get current pricing and availability for 3RA2120-1JE24-0BB4?

Submit an RFQ through this listing.

MPN
3RA2120-1JE24-0BB4