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Siemens 3RA6120-2CB32 — Motor Starters

Siemens 3RA6120-2CB32 SIRIUS Compact Starter, 53 kA at 400 V

MPN3RA6120-2CB32
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Siemens SIRIUS 3RA6120-2CB32 compact motor starter, direct starter design, 53 kA breaking capacity at 400 V, adjustable CLASS 10 and 20, 24 V AC/DC coil, spring-loaded terminals, 45 mm width, 191 mm height, 165 mm depth.

$267.97Ref. price · indicative, final on quote
Siemens 3RA6120-2CB32 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

3RA6120-2CB32 — Identification
ParameterValue
Product designationcompact starter
Main circuit poles3
BrandSIRIUS
Product design / constructiondirect starter
Reference designation (IEC 81346-2)Q

Ratings & Performance

3RA6120-2CB32 — Ratings & Performance
ParameterValue
Rated motor power at 400 V1 500 W
Rated motor power at 460/480 V (hp)2 hp
Rated motor power at 575/600 V (hp)3 hp
Rated current at 480 V4 A
Rated current at 600 V4 A
Rated impulse withstand voltage (Uimp)6 000 V

Protection & Tripping

3RA6120-2CB32 — Protection & Tripping
ParameterValue
Trip classCLASS 10 and 20 adjustable
Short-circuit protectionYes
Overload release setting range (current)1 ... 4 A
Duty / utilization type (IEC 60947-6-2)continous operation according to IEC 60947-6-2

Contacts & Control

3RA6120-2CB32 — Contacts & Control
ParameterValue
Rated voltage range at 50 Hz24 V
Auxiliary contacts, NO1
Auxiliary contacts, NC1
Auxiliary switch extensionYes

Mechanical & Connection

3RA6120-2CB32 — Mechanical & Connection
ParameterValue
Mounting / fastening methodscrew and snap-on mounting
Mounting positionany
Width45 mm
Height191 mm
Depth165 mm

Environmental

3RA6120-2CB32 — Environmental
ParameterValue
Operating temperature range-20 ... +60 °C
Storage temperature range-55 ... +80 °C
Transport temperature range-55 ... +80 °C
Pollution degree3

Product details

53 kA at 400 V — interrupting capacity that sets the SCCR floor

The 3RA6120-2CB32: Rated 53 kA at 400 V, this SIRIUS compact starter (direct starter design per) delivers interrupting capacity that sets the short-circuit current rating (SCCR) floor for the motor branch circuit it protects. The adjustable trip class — CLASS 10 and 20 — lets you match the overload release to the motor start profile: CLASS 10 for faster-starting loads (pumps, fans) or CLASS 20 for high-inertia starts (conveyors, crushers). Rated for continuous operation per IEC 60947-6-2, the starter handles sustained motor duty without derating the interrupting capacity.

Spring-loaded terminals and DIN-rail snap-on

Mounting position is any orientation, but the recommended orientation is vertical on horizontal DIN rail for optimal heat dissipation from the 2.8 W AC / 2.9 W DC power dissipation.

Frequently asked questions

Where can I buy 3RA6120-2CB32 and get a price?

Available to order through independent distribution.

MPN
3RA6120-2CB32