Name: Siemens 3RW4028-1BB04 3RW40281BB04 Soft starter Motor power at 400 V 18.5 kW 480 V Nominal current 38 A
Brand: Siemens
SKU: 1705012
Availability: BackOrder

A Siemens contactor, an electrical switching device used for controlling an electric motor, in side view.

'Open electrical cabinet with multiple electrical modules and wiring, showing the arrangement of electrical components and their connections.'

'Illustration of a soft starter 3RW40 with various components, including connection socket, fan, and supply terminal. Diagram demonstrating the arrangement and connection of individual parts.'

'Circuit diagram of an engine control system: shows connections and switch positions for different operating modes and protective devices.'

Technical drawing of an electrical device with front, side, and top views. Dimensions provided in millimetres.

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Datasheet (PDF)

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Dispatches on Tue, 26 Jan 2027

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€ 785.00

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Technical specifications

Protection class: IP20
Mounting type: screw and snap
Number of normally open contact: 2
Number of changer: 1
Size S0
Operating frequency: 50/60 Hz
Isolation voltage: 600 V

Motor voltage: 400 V V

Product type: Soft starter

Supply current: 38 A

Motor power at 400 V: 18.5 kW

Nominal voltage: 480 V

Type: Screw connector

Manufacturer part #: 3RW40281BB04

Nominal current: 38 A

Nominal current - rounded value: 38 A

Type: 3RW4028-1BB04

Motor power at 230V / 400V: 18.5 kW

Dim: (W x H x D) 45 x 125 x 155 mm

Connection: Screw terminal

Width: 45 mm

Height: 125 mm

Depth: 155 mm

Max. temperature: +60 °C

Min. temperature: -25 °C

: Single direction

: 24-24 V

: 24-24 V

: 24-24 V

: IP20

: Other

: 38 A

: 11 kW

: 18.5 kW

: 40 °C

: TRUE

: AC/DC

UKCA: yes

Variants(All information include VAT, plus shipping costs)

Nominal voltage

Motor power at 400 V

Motor power at 230V / 400V

Nominal current - rounded value

Product type

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Documents & Downloads

Datasheet

Datasheet 1705012 Siemens 3RW4028-1BB04 3RW40281BB04 Soft starter Motor power at 400 V 18.5 kW 480 V Nominal current 38 A

User & Safety Instructions

User & Safety Instructions 1705012 Siemens 3RW4028-1BB04 3RW40281BB04 Soft starter Motor power at 400 V 18.5 kW 480 V Nominal current 38 A

Description

Power contactor, AC-3 25 A, 11 kW / 400 V 2 NO + 2 NC 230 V AC, 50 Hz 4-pole size S0 screw terminals 1 NO + 1 NC integrated

Description

Power contactor, AC-3 25 A, 11 kW / 400 V 2 NO + 2 NC 230 V AC, 50 Hz 4-pole size S0 screw terminals 1 NO + 1 NC integrated

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