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Siemens SIRIUS 3RW4038-2TB04 Soft Starter S2

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ManufacturerSiemens

Part number3RW4038-2TB04

Series SIRIUS 3RW40

Frame Size S2

Rated Current 72 A (at 40°C)

Rated Power 37 kW (at 400V)

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Smooth motor starting Reduces current inrush Thermistor motor protection Spring-type terminals IP00 rated

Product description

The Siemens 3RW4038-2TB04 is a SIRIUS S2 soft starter, rated for 72A and 37 kW at 400V. It operates on a supply voltage of 200-480 V AC and a control voltage of 24 V AC/DC. This soft starter features spring-type terminals and includes thermistor motor protection. It has an IP00 protection rating.

This soft starter is designed for smooth and controlled starting of three-phase motors, reducing mechanical stress and current inrush. It is commonly used in applications such as pumps, fans, compressors, and conveyors across various industrial sectors.

Stanlo Automation, your veteran-owned source for surplus industrial parts, offers the Siemens 3RW4038-2TB04. Benefit from our commitment to quality, competitive pricing, and fast shipping to keep your operations running efficiently. Purchase with confidence from Stanlo Automation.

Technical specifications

Series	SIRIUS 3RW40
Frame Size	S2
Rated Current	72 A (at 40°C)
Rated Power	37 kW (at 400V)
Supply Voltage	200-480 V AC
Control Voltage	24 V AC/DC
Protection	Thermistor motor protection
Terminals	Spring-type
IP Rating	IP00

Common applications

Motor Control

Pumps

Fans

Compressors

Conveyor Systems

Industrial Automation

Compatible systems

Compatible with three-phase AC asynchronous motors and control systems utilizing 24V AC/DC control voltage.

Also known as

SIRIUS Soft Starter S2 Siemens 72A Soft Starter 3RW40 series soft starter

Replaces / compatible with

This soft starter is part of the Siemens SIRIUS 3RW40 series. It is suitable for replacing older or similar soft starters in the 37kW range.

Technical note

Expert tip

The IP00 rating requires this unit to be installed within an enclosure for protection.

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Frequently asked questions

What is the rated current and power for the Siemens 3RW4038-2TB04 soft starter?

The Siemens 3RW4038-2TB04 SIRIUS soft starter has a rated operational current of 72A (at 40°C) and is designed for motors up to 37kW at 400V. It operates on 200-480V AC supply voltage.