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Siemens 3RW4038-1TB04 SIRIUS Soft Starter - 72A, 37kW

Siemens 3RW4038-1TB04 SIRIUS S2 Soft Starter.

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ManufacturerSiemens

Part number3RW4038-1TB04

Type Soft Starter

Series SIRIUS 3RW40

Frame Size S2

Rated Operational Current (AC-53a) 72 A

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Smooth motor start-up Reduced inrush current Thermistor motor protection S2 frame size Screw terminals 24V AC/DC control voltage

Product description

The Siemens 3RW4038-1TB04 is a SIRIUS soft starter designed for S2 applications, rated for 72A and 37kW at 400V. It operates within a voltage range of 200-480V AC and features a 24V AC/DC control voltage with screw terminals. This model includes integrated thermistor motor protection for enhanced safety and longevity of motor systems.

This soft starter is ideal for applications requiring smooth motor start-up, reducing mechanical stress on machinery and electrical inrush current. It finds use in various industries, including manufacturing, material handling, and pump control, where precise motor control is essential.

As a veteran-owned distributor, Stanlo Automation specializes in providing high-quality surplus industrial automation parts like the Siemens 3RW4038-1TB04. We ensure reliable sourcing and prompt delivery, offering cost-effective solutions for your automation needs.

Technical specifications

Type	Soft Starter
Series	SIRIUS 3RW40
Frame Size	S2
Rated Operational Current (AC-53a)	72 A
Rated Power (400V)	37 kW
Control Voltage	24 V AC/DC
Main Circuit Voltage	200-480 V AC
Terminal Type	Screw
Motor Protection	Thermistor
Overload	Yes

Common applications

Motor control

Pump control

Conveyor systems

Fan control

Material handling

Manufacturing equipment

Compatible systems

Compatible with various motor types and control systems that accept 24V AC/DC control signals and require soft start functionality.

Also known as

Siemens SIRIUS 3RW40 Soft Starter 72A 3RW40 Series

Replaces / compatible with

This soft starter is designed to replace traditional direct-on-line starters for applications requiring reduced mechanical and electrical stress during motor startup. It offers enhanced motor protection features.

Technical note

Expert tip

Ensure proper heatsinking and ventilation as per manufacturer guidelines when installing this soft starter to maintain optimal performance and lifespan.

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Frequently asked questions

What is the rated power for the Siemens 3RW4038-1TB04 soft starter?

The Siemens 3RW4038-1TB04 soft starter has a rated power of 37 kW at 400V. It is designed for S2 applications and can handle a rated operational current of 72 A.