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Siemens 3RA2120-1JA24-0AK6 — Motor Starters

Siemens 3RA2120-1JA24-0AK6 SIRIUS Fuseless Load Feeder

MPN3RA2120-1JA24-0AK6

Siemens SIRIUS 3RA2120-1JA24-0AK6, S0 size, non-fused load feeder, direct starter, CLASS 10, 45 mm width, 97.1 mm depth, 193.1 mm height, screw and snap-on mounting onto 35 mm DIN rail.

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

3RA2120-1JA24-0AK6 — 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)3RT2024-1AK60
Included circuit-breaker (type)3RV2021-1JA10
Included link module (type)3RA2921-1AA00
3RA2120-1JA24-0AK6 — Ratings & Performance
ParameterValue
Rated motor power at 400 V4 000 W
Operational current Ie, AC-3 at 400 V8.5 A
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)7.5 hp
Rated current at 480 V7.92 A
Rated current at 600 V9.19 A
Rated operating frequency50 ... 60 Hz
Rated impulse withstand voltage (Uimp)6 kV
Rated insulation voltage Ui (AC, pollution degree 3)690 V
3RA2120-1JA24-0AK6 — 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)7 ... 10 A
Overload release typethermal (bimetallic)
Short-circuit trip typemagnetic
Duty / utilization type (IEC 60947-6-2)2
3RA2120-1JA24-0AK6 — Contacts & Control
ParameterValue
Rated value690 V
Rated voltage range at 50 Hz110 V
Auxiliary switch extensionYes
Switching contact typeelectromechanical
3RA2120-1JA24-0AK6 — Mechanical & Connection
ParameterValue
Main circuit connection typescrew-type terminals
Mounting / fastening methodscrew and snap-on mounting onto 35 mm DIN rail
Mounting positionvertical
Width45 mm
Height193.1 mm
Depth97.1 mm
3RA2120-1JA24-0AK6 — 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

Product details

SIRIUS 3RA2120-1JA24-0AK6 — Non-Fused Load Feeder, S0 Size

The Siemens 3RA2120-1JA24-0AK6 is a SIRIUS S0 non-fused load feeder configured as a direct starter. It ships as a pre-assembled unit integrating a 3RT2024-1AK60 contactor and a 3RA2921-1AA00 link module, so the panel builder gets a single part number for the motor branch — no separate contactor, overload, and wiring links to source and assemble. Rated for motor duty up to 4 000 W at 400 V (AC-3) and 7.5 hp at 575/600 V, with a maximum operational voltage of 690 V AC-3. The trip class is CLASS 10, meaning it clears a stalled-rotor overload fast enough to protect standard IEC induction motors — the standard choice for pump, fan, and conveyor starts where the acceleration time stays under 10 seconds. The 45 mm width (S0 frame) fits standard panel layouts; the 97.1 mm depth leaves clearance behind the gland plate.

Frequently asked questions

Does Siemens 3RA2120-1JA24-0AK6 include overload protection?

Yes, the 3RA2120-1JA24-0AK6 is a non-fused load feeder configured as a direct starter, which integrates overload protection via the included link module and contactor assembly. The trip class is CLASS 10, protecting standard induction motors against stalled-rotor overloads.

MPN
3RA2120-1JA24-0AK6