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Siemens 3RW4027-2TB05 SIRIUS Soft Starter - 32A

Siemens 3RW4027-2TB05 SIRIUS Soft Starter

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ManufacturerSiemens

Part number3RW4027-2TB05

Rated operational current 32 A

Motor power (at 500V) 18.5 kW

Voltage range 400-600 V AC

Control voltage 24 V AC/DC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth motor start Integrated thermistor protection Spring-type terminals Reduced mechanical stress Compact design

Product description

The Siemens 3RW4027-2TB05 is a SIRIUS soft starter designed for smooth, controlled starting of three-phase induction motors. It provides a current rating of 32 A and can handle motors up to 18.5 kW at 500 V, with an operating voltage range of 400-600 V AC. This unit includes a thermistor motor protection and features spring-type terminals for easy connection.

This soft starter is ideal for applications where mechanical stress on the motor and connected equipment needs to be minimized, such as in pump systems, conveyor belts, and fan applications. It helps to reduce wear and tear, extend equipment lifespan, and improve overall system reliability.

Stanlo Automation, a veteran-owned business, offers a wide selection of surplus industrial automation parts, including Siemens soft starters like the 3RW4027-2TB05. We provide cost-effective solutions for your MRO needs, ensuring you receive quality components with prompt service.

Technical specifications

Rated operational current	32 A
Motor power (at 500V)	18.5 kW
Voltage range	400-600 V AC
Control voltage	24 V AC/DC
Protection	Thermistor
Terminals	Spring-type

Common applications

Pump control

Fan control

Conveyor systems

Compressors

Motor starting

Compatible systems

Siemens S7-1200 Siemens S7-1500 SIMATIC PLCs

Also known as

Siemens SIRIUS 3RW40 Soft Starter S0 32A Siemens 3RW40 soft starter

Replaces / compatible with

This soft starter can replace older motor starting methods like direct-on-line or star-delta starters, offering improved performance and reduced wear. It is part of the Siemens SIRIUS 3RW40 family.

Technical note

Expert tip

The 24V AC/DC control voltage is essential for operation; ensure a stable and appropriate power source is connected to the control terminals.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RW4027-2TB05 soft starter at 500V?

The Siemens 3RW4027-2TB05 SIRIUS soft starter can handle a maximum motor power of 18.5 kW when operating at 500V. This makes it suitable for a range of medium-sized industrial motors.