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Siemens SIRIUS 3RW33 Soft Starter - 180A

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ManufacturerSiemens

Part number3RW3346-0EC34

Series SIRIUS 3RW33

Type Soft Starter

Input Voltage 3AC 380-480V

Max Current 180A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth Motor Acceleration Reduced Starting Current Peaks Adjustable Start/Stop Ramps Current Limiting Function Protection Against Overload Reduced Mechanical Stress

Product description

The Siemens 3RW3346-0EC34 is a SIRIUS 3RW33 series soft starter designed for smooth starting of three-phase AC motors. This unit is rated for a 3-phase AC supply of 380-480V and has a maximum continuous current rating of 180A, suitable for motors up to 90 kW (at 400V). It provides controlled acceleration and deceleration to reduce mechanical stress and electrical load.

This soft starter is ideal for applications where high starting torques are not required, and it helps to minimize current peaks during motor start-up, protecting both the motor and the power supply system. Its features include adjustable acceleration ramp time and current limiting.

Stanlo Automation, your veteran-owned surplus parts distributor, offers the Siemens 3RW3346-0EC34, providing a reliable and cost-effective solution for your motor control needs.

Technical specifications

Series	SIRIUS 3RW33
Type	Soft Starter
Input Voltage	3AC 380-480V
Max Current	180A
Max Motor Power	90 kW (at 400V)
Control	Adjustable Acceleration/Deceleration
Features	Current Limiting

Common applications

Conveyor Systems

Pump Control

Fan Control

Compressors

Elevators

Machine Tools

Compatible systems

Three-phase AC induction motors Siemens control systems

Also known as

Siemens SIRIUS Soft Starter 3RW33 180A Soft Start

Replaces / compatible with

Replaces direct-on-line starters or star-delta starters for applications requiring reduced starting torque and current.

Technical note

Expert tip

When installing the 3RW33 soft starter, ensure adequate ventilation and clearances are maintained as per the manufacturer's guidelines to prevent overheating.

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Frequently asked questions

What is the maximum motor power the Siemens 3RW3346-0EC34 soft starter can control at 400V?

The Siemens 3RW3346-0EC34 SIRIUS soft starter can control three-phase AC motors with a maximum power rating of 90 kW when operating at a voltage of 400V.