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Siemens 3RW4038-1BB15 SIRIUS Soft Starter - 72A, 45kW

Siemens SIRIUS soft starter, 72A, 45kW, for smooth motor starts.

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ManufacturerSiemens

Part number3RW4038-1BB15

Product SIRIUS Soft Starter

Part Number 3RW4038-1BB15

Rated Current 72 A

Motor Power 45 kW (at 500 V)

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth motor acceleration Reduces starting current Protects motor and power system 72A rated current 45kW motor capacity Wide control voltage range

Product description

The Siemens 3RW4038-1BB15 is a SIRIUS soft starter designed to gradually accelerate three-phase motors, reducing mechanical stress and electrical current peaks. This model is rated for 72A and can control motors up to 45 kW at 500V. It operates with a main circuit voltage range of 400-600V AC and features control voltage compatibility of 110-230V AC/DC. The unit utilizes screw terminals for reliable electrical connections and is suitable for ambient temperatures up to 40°C.

SIRIUS soft starters are essential components in industrial applications for controlling motor starting. They are commonly used in pumps, fans, compressors, conveyors, and other machinery where a smooth start is required to prevent system shock, reduce wear and tear, and save energy. The soft start function minimizes inrush current, protecting both the motor and the power supply system.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, is your source for the Siemens 3RW4038-1BB15. We offer dependable access to quality soft starters and other automation components to help you maintain and optimize your motor control systems.

Technical specifications

Product	SIRIUS Soft Starter
Part Number	3RW4038-1BB15
Rated Current	72 A
Motor Power	45 kW (at 500 V)
Main Circuit Voltage	400-600 V AC
Control Voltage	110-230 V AC/DC
Terminals	Screw Terminals
Ambient Temperature	up to 40°C

Common applications

Pump control

Fan control

Compressor control

Conveyor systems

Industrial machinery

Motor soft start

Compatible systems

Three-phase AC motors Motor control circuits Siemens SIRIUS motor control system

Also known as

Siemens soft starter 72A SIRIUS 3RW40 3RW40381BB15

Replaces / compatible with

Replaces direct-on-line starters for applications requiring reduced starting stress. Compatible with Siemens SIRIUS motor control components.

Technical note

Expert tip

The use of screw terminals ensures a secure and reliable connection, essential for high current applications like motor starting.

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Frequently asked questions

What is the control voltage range for the Siemens 3RW4038-1BB15 SIRIUS soft starter?

The Siemens 3RW4038-1BB15 SIRIUS soft starter is designed to operate with a control voltage of 110-230V AC/DC. This flexible range allows for compatibility with various control power supplies in industrial settings.