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Siemens 3RA2315-8XB30-1BW4 — Motor Starters

Siemens 3RA2315-8XB30-1BW4 SIRIUS Reversing Contactor

MPN3RA2315-8XB30-1BW4
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Siemens SIRIUS 3RA2315-8XB30-1BW4 reversing contactor assembly, size S00, 3 kW at 400 V AC-3, screw-type terminals, 90 x 68 x 73 mm, DIN rail mount.

Siemens 3RA2315-8XB30-1BW4 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RA2315-8XB30-1BW4 — Identification
ParameterValue
Product designationReversing contactor assembly
Main circuit poles3
BrandSIRIUS
Reference designation (IEC 81346-2)Q
3RA2315-8XB30-1BW4 — Ratings & Performance
ParameterValue
Rated motor power at 400 V3 kW
Rated motor power at 460/480 V (hp)3 hp
Rated motor power at 575/600 V (hp)5 hp
Rated current at 480 V4.8 A
Rated current at 600 V6.1 A
3RA2315-8XB30-1BW4 — Contacts & Control
ParameterValue
Control supply voltage typeDC
Auxiliary switch extensionYes
3RA2315-8XB30-1BW4 — Communication
ParameterValue
AS-Interface protocol supportNo
3RA2315-8XB30-1BW4 — Mechanical & Connection
ParameterValue
Main contact conductor range (AWG)2x (20 ... 16), 2x (18 ... 14)
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
Width90 mm
Height68 mm
Depth73 mm
3RA2315-8XB30-1BW4 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C

Product details

Reversing contactor assembly for compact motor control

The Siemens 3RA2315-8XB30-1BW4 is a SIRIUS reversing contactor assembly in frame size S00, designed to switch three-phase motors in forward/reverse duty without external interlocking wiring. It ships with two 3RT2015-1BW42 contactors and a 3RA2913-2AA1 mechanical interlock kit, so the reversing pair arrives as a tested assembly ready for DIN-rail mounting.

Mounting and panel integration

Dimensions are 90 mm wide, 68 mm high, 73 mm deep; clearance gaps of 6 mm sideways and upwards keep heat dissipation predictable in a multi-device row.

Environmental and compliance

Rated for operation from -25 °C to +60 °C and storage from -55 °C to +80 °C, covering most indoor panel environments without forced cooling. Shock resistance is 10.5 g for 5 ms and 6.6 g for 10 ms on both AC and DC supplies — adequate for machine-mounted panels near presses or conveyors. RoHS compliance date is 2009-10-01; the part carries the standard Siemens substance prohibitance declaration.

Frequently asked questions

What is the 3RA2315-8XB30-1BW4 rated for at 400 V?

It is rated 3 kW at 400 V AC-3, which covers most small three-phase motor reversing applications in that voltage class.

What contactors are supplied with this reversing assembly?

The assembly includes two 3RT2015-1BW42 contactors and a 3RA2913-2AA1 mechanical interlock kit, pre-configured for reversing duty.

MPN
3RA2315-8XB30-1BW4