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Siemens 3RW4038-2BB14 S2 Soft Starter

Siemens SIRIUS 3RW4038-2BB14 S2 Soft Starter, 72A, 37kW.

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ManufacturerSiemens

Part number3RW4038-2BB14

Type Soft Starter

Series SIRIUS 3RW40

Size S2

Rated operational current 72 A

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CAGE: 9NK75

Reduces mechanical and electrical stress Controlled motor acceleration Integrated bypass contact Compact design Spring-type terminals

Product description

The Siemens 3RW4038-2BB14 is a SIRIUS soft starter designed for S2 applications. It features a rated operational current of 72A and a motor power of 37 kW at 400V. The device operates within a voltage range of 200-480V AC for the main circuit and 110-230V AC/DC for the control circuit, utilizing spring-type terminals for secure connections.

This soft starter is ideal for applications requiring controlled motor start-up to reduce mechanical stress and electrical inrush current. It is commonly used in conveyor systems, pump applications, and fan controls within various industrial sectors.

As a veteran-owned distributor, Stanlo Automation offers reliable access to surplus industrial automation parts like the Siemens 3RW4038-2BB14. We provide quality components with a commitment to service and rapid delivery, ensuring your operations remain efficient.

Technical specifications

Type	Soft Starter
Series	SIRIUS 3RW40
Size	S2
Rated operational current	72 A
Motor power	37 kW (at 400 V)
Main circuit voltage	200-480 V AC
Control circuit voltage	110-230 V AC/DC
Terminals	Spring-type
Ambient temperature	40 °C

Common applications

Conveyor systems

Pump control

Fan applications

General motor starting

Industrial machinery

Compatible systems

Suitable for DOL (Direct On-Line) or Star-Delta starting applications with appropriate motor protection.

Also known as

Siemens S2 Soft Starter SIRIUS 3RW40 Starter 3RW4038-2BB14

Replaces / compatible with

This part is a direct replacement for other Siemens SIRIUS 3RW40 series soft starters of the same rating. Consult Siemens documentation for specific cross-references.

Technical note

Expert tip

Ensure the control voltage (110-230V AC/DC) is correctly applied to the spring-type terminals for proper soft starter operation.

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Frequently asked questions

What is the motor power rating for the Siemens 3RW4038-2BB14 soft starter?

The Siemens 3RW4038-2BB14 SIRIUS soft starter is rated for a motor power of 37 kW when operating at 400V. This ensures it can handle demanding motor loads.