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Siemens SIRIUS 3RW4046-1TB04 S3 Soft Starter

Siemens SIRIUS S3 Soft Starter - 80A, 45kW, with motor protection.

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ManufacturerSiemens

Part number3RW4046-1TB04

Series SIRIUS S3

Rated Current 80 A

Rated Power 45 kW (at 400V)

Control Voltage 200-480 V AC

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SIRIUS S3 Series 80A Rated Current 45kW Motor Power Thermistor Motor Protection Screw Terminals 24V AC/DC Control

Product description

The Siemens 3RW4046-1TB04 is a SIRIUS S3 soft starter rated for 80A and 45kW at 400V. It operates with a control voltage of 200-480V AC and includes 24V AC/DC terminals. This soft starter features screw terminals and integrated thermistor motor protection.

Designed for smooth acceleration and deceleration of three-phase motors, this soft starter is ideal for applications where high starting currents need to be managed. Industries include pump control, fan systems, compressors, and conveyor belts, preventing mechanical stress and power surges.

Stanlo Automation, a veteran-owned distributor, provides reliable surplus Siemens components like the 3RW4046-1TB04. We ensure quality parts for your industrial automation needs.

Technical specifications

Series	SIRIUS S3
Rated Current	80 A
Rated Power	45 kW (at 400V)
Control Voltage	200-480 V AC
Auxiliary Voltage	24 V AC/DC
Terminals	Screw
Protection	Thermistor Motor Protection

Common applications

Pump Control

Fan Systems

Conveyor Belts

Compressors

Industrial Machinery

Motor Soft Starting

Compatible systems

Three-phase AC motors Standard industrial power supplies

Also known as

Siemens SIRIUS 3RW40 Siemens S3 Soft Starter 3RW40 46-1TB04

Replaces / compatible with

This S3 soft starter is designed for direct-on-line starting of motors, offering a gentler alternative to traditional starters. It can replace older contactor-based soft start systems.

Technical note

Expert tip

The integrated thermistor motor protection requires connection of a suitable PTC thermistor to the designated terminals for effective motor temperature monitoring.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RW4046-1TB04 soft starter at 400V?

The Siemens 3RW4046-1TB04 soft starter is rated for a maximum motor power of 45 kW when operating at a 400V supply voltage.