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Siemens 3RW5912-0SB04 — Soft Starters

Siemens 3RW5912-0SB04 Power Semiconductor Module, 480 V

MPN3RW5912-0SB04

Siemens 3RW5912-0SB04 power semiconductor module, 480 V, 18 A, for 3RW51 soft starters, current lifecycle stage.

Siemens 3RW5912-0SB04 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RW5912-0SB04 — Identification
ParameterValue
Product designationPower semiconductor module
3RW5912-0SB04 — Other specifications
ParameterValue
Of soft starter3RW5114 (3x)
Design of the product480 V, 18 A
Ambient temperature during storage-40 ... +80 °C

Product details

The 3RW5912-0SB04 is a power semiconductor module designed to serve as the output stage for the Siemens 3RW51 soft starter series, specifically the 3RW5114 (3x) models. Rated at 480 V and 18 A, it defines the voltage and current ceiling for the soft starter it supports — not a standalone soft starter, but the replaceable power block inside the assembly.

Storage and handling considerations

Storage temperature range spans -40 to +80 °C, which covers most warehouse and unheated site storage conditions without special climate control.

Frequently asked questions

What is 3RW5912-0SB04's listed of soft starter (3RW5114 (3x)) on this Soft Starters line?

The module is designed for use with the 3RW5114 (3x) soft starter models in the Siemens 3RW51 series.

MPN
3RW5912-0SB04