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Siemens 3RW4037-1TB04 SIRIUS Soft Starter S2

Siemens 3RW4037-1TB04 SIRIUS S2 Soft Starter

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ManufacturerSiemens

Part number3RW4037-1TB04

Rated Current 63 A (at 40°C)

Motor Power 30 kW (at 400V)

Supply Voltage 200-480 V AC

Control Voltage 24 V AC/DC

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SIRIUS S2 Soft Starter Smooth Motor Acceleration/Deceleration 200-480V AC Wide Input Range 24V AC/DC Control Thermistor Motor Protection Screw Terminals

Product description

The Siemens 3RW4037-1TB04 is a SIRIUS S2 soft starter rated for 63 A and capable of controlling motors up to 30 kW at 400 V. It operates with a main supply voltage range of 200-480 V AC and a control voltage of 24 V AC/DC. This soft starter features screw terminals and includes thermistor motor protection.

This soft starter is designed to provide smooth acceleration and deceleration for three-phase asynchronous motors, reducing mechanical stress and electrical inrush current. It's ideal for applications in pump control, fan systems, conveyor belts, and other machinery where soft starting is beneficial to protect equipment and improve system efficiency.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens 3RW4037-1TB04. We are dedicated to providing quality components and reliable service to keep your automation systems running. Source your soft starters and other industrial needs from Stanlo Automation for dependable performance and value.

Technical specifications

Rated Current	63 A (at 40°C)
Motor Power	30 kW (at 400V)
Supply Voltage	200-480 V AC
Control Voltage	24 V AC/DC
Frame Size	S2
Terminals	Screw
Protection	Thermistor Motor Protection

Common applications

Pump Control

Fan Systems

Conveyor Belts

Compressors

Industrial Machinery

Motor Protection

Compatible systems

Three-phase asynchronous motors Control panels Motor control circuits

Also known as

Siemens SIRIUS 3RW40 S2 Soft Starter Motor Soft Starter 63A

Replaces / compatible with

This S2 soft starter replaces direct-on-line starters and star-delta starters for applications requiring reduced starting current and torque. It is part of the SIRIUS 3RW40 series.

Technical note

Expert tip

Ensure the motor's rated current is within the 63A operational current capacity of this soft starter and that the control voltage is correctly supplied as 24V AC or DC.

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Frequently asked questions

What is the maximum motor power this Siemens 3RW4037-1TB04 soft starter can control?

The Siemens 3RW4037-1TB04 soft starter is rated to control motors up to 30 kW at a 400 V supply voltage. It can handle an operational current of 63 A at 40°C.