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Siemens SIRIUS 3RW40 Soft Starter

Siemens SIRIUS 3RW40 Soft Starter (S0)

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ManufacturerSiemens

Part number3RW4028-2BB15

Series SIRIUS

Model 3RW4028-2BB15

Size S0

Rated Motor Current 38 A

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Veteran-owned

CAGE: 9NK75

Smooth motor acceleration Reduces inrush current S0 size 38A rating 400-600V AC control Spring-type terminals

Product description

The Siemens 3RW4028-2BB15 is a SIRIUS soft starter with a size S0 rating, capable of handling a motor current of 38A and supporting up to 22 kW at 500V. It operates with a control voltage range of 400-600V AC and features spring-type terminals for easy and secure connections. This soft starter is designed for standard duty applications, providing smooth acceleration for three-phase AC motors.

This soft starter is essential for reducing mechanical stress on machinery and electrical inrush currents when starting motors. It is commonly used in applications such as conveyors, pumps, fans, and compressors across various industrial sectors to ensure controlled motor startup and prolong equipment life.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RW4028-2BB15 SIRIUS soft starter. We provide reliable access to quality motor control components for your industrial needs.

Technical specifications

Series	SIRIUS
Model	3RW4028-2BB15
Size	S0
Rated Motor Current	38 A
Max Motor Power	22 kW (at 500V)
Control Voltage	400-600V AC
Terminals	Spring-type
Manufacturer	Siemens

Common applications

Motor control

Pump starting

Fan starting

Conveyor systems

Compressors

Industrial machinery

Compatible systems

Three-phase AC induction motors Motor control panels SIRIUS motor control system

Also known as

Siemens SIRIUS 3RW40 3RW40282BB15 38A soft starter

Replaces / compatible with

Replaces direct-on-line starters for smoother motor startup and reduces mechanical and electrical stress. Compatible with SIRIUS motor control components.

Technical note

Expert tip

The spring-type terminals provide vibration-resistant connections, simplifying installation and maintenance in demanding industrial environments.

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Frequently asked questions

What is the control voltage range and current rating for the Siemens 3RW4028-2BB15 SIRIUS soft starter?

The Siemens 3RW4028-2BB15 SIRIUS soft starter operates with a control voltage of 400-600V AC and has a rated motor current of 38 Amps. It supports motor powers up to 22 kW at 500V.