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Siemens 3RW4027-1TB04 SIRIUS Soft Starter

Siemens SIRIUS S0 soft starter, 32A, 15kW.

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ManufacturerSiemens

Part number3RW4027-1TB04

Part Number 3RW4027-1TB04

Manufacturer Siemens

Series SIRIUS

Type Soft Starter

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Smooth Motor Start Reduces Inrush Current Integrated Motor Protection 200-480V AC Wide Voltage Range 24V AC/DC Control Screw Terminals

Product description

The Siemens 3RW4027-1TB04 is a SIRIUS soft starter, size S0, with a 32A rating and capable of handling 15kW at 400V. It operates on a wide voltage range of 200-480V AC and includes a 24V AC/DC control voltage input. It features screw terminals and integrated thermistor motor protection.

This soft starter is designed to provide a smooth, controlled start for three-phase motors, reducing mechanical stress and electrical inrush current. It's ideal for applications like conveyor systems, pumps, fans, and compressors where gradual acceleration is beneficial for equipment longevity and power system stability.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RW4027-1TB04. We ensure you have access to reliable, cost-effective components to manage your motor control needs and keep your industrial operations running smoothly.

Technical specifications

Part Number	3RW4027-1TB04
Manufacturer	Siemens
Series	SIRIUS
Type	Soft Starter
Size	S0
Current Rating	32 A
Power Rating	15 kW / 400 V
Control Voltage	200-480 V AC, 24 V AC/DC
Terminals	Screw
Features	Thermistor motor protection

Common applications

Conveyor Systems

Pumps

Fans

Compressors

Material Handling

Industrial Machinery

Motor Control

Compatible systems

Three-phase Induction Motors Control Systems requiring 24V AC/DC control voltage

Also known as

Siemens SIRIUS Soft Starter 3RW4027-1TB04 Motor Controller Siemens 32A Soft Starter

Replaces / compatible with

This soft starter replaces direct-on-line starters and star-delta starters in many applications, providing smoother acceleration and integrated protection. It is compatible with various motor control circuits requiring its specifications.

Technical note

Expert tip

When using the thermistor motor protection feature, ensure the external PTC thermistors are correctly wired and rated for the motor's operating temperature.

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Frequently asked questions

What motor protection features are included with the Siemens 3RW4027-1TB04 SIRIUS soft starter?

The Siemens 3RW4027-1TB04 SIRIUS soft starter includes integrated thermistor motor protection. This feature helps protect the motor from overheating by monitoring the motor winding temperature.