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Siemens 3RA2337-8XB30-1AL2 — Motor Starters

Siemens 3RA2337-8XB30-1AL2 SIRIUS Reversing Contactor

MPN3RA2337-8XB30-1AL2
Active

Siemens SIRIUS 3RA2337-8XB30-1AL2 reversing contactor assembly, Size S2, 30 kW at 400 V AC-3, 65 A at 480 V, 3RT2037-1AL20 contactors supplied, screw terminals, DIN rail mount.

Siemens 3RA2337-8XB30-1AL2 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2337-8XB30-1AL2 — Identification
ParameterValue
Product designationReversing contactor assembly
Main circuit poles3
BrandSIRIUS
Reference designation (IEC 81346-2)Q
3RA2337-8XB30-1AL2 — Ratings & Performance
ParameterValue
Rated motor power at 400 V30 kW
Rated motor power at 460/480 V (hp)50 hp
Rated motor power at 575/600 V (hp)50 hp
Rated current at 480 V65 A
Rated current at 600 V62 A
3RA2337-8XB30-1AL2 — Contacts & Control
ParameterValue
Rated voltage range at 50 Hz230 V
Control supply voltage typeAC
Auxiliary switch extensionYes
3RA2337-8XB30-1AL2 — Communication
ParameterValue
AS-Interface protocol supportNo
3RA2337-8XB30-1AL2 — Mechanical & Connection
ParameterValue
Main contact conductor range (AWG)2x (18 ... 2), 1x (18 ... 1)
Mounting / fastening methodscrew and snap-on mounting onto 35 mm standard mounting rail
Mounting position+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface
Width120 mm
Height141 mm
Depth130 mm
3RA2337-8XB30-1AL2 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C

Product details

Reversing contactor assembly for motor direction control

The Siemens 3RA2337-8XB30-1AL2 is a SIRIUS reversing contactor assembly, Size S2, built around two 3RT2037-1AL20 contactors for forward/reverse motor control. Rated 30 kW at 400 V AC-3, it handles reversing duty for three-phase motors up to that power level, with a 65 A continuous rating at 480 V.

Environmental and compliance profile

Operating temperature range is -25…+60 °C, with storage from -55…+80 °C — suitable for unconditioned enclosures in most industrial settings. Vibration resistance is rated at 18.5g / 5 ms and 11.6g / 10 ms under AC conditions, covering typical machine-mounted shock profiles.

Frequently asked questions

What is the 3RA2337-8XB30-1AL2's depth?

The depth is 130 mm, with a width of 120 mm and height of 141 mm — fits standard 35 mm DIN rail enclosures with 10 mm clearance required upwards, downwards, and to the sides.

MPN
3RA2337-8XB30-1AL2