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Siemens 3RW4037-2BB04 Sirius S2 Soft Starter

Siemens SIRIUS S2 soft starter, 63A, 30kW motor, 200-480V AC.

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ManufacturerSiemens

Part number3RW4037-2BB04

Type S2

Current 63 A

Power 30 kW / 400 V

Voltage Range 200-480 V AC

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12-month warranty

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SIRIUS soft starter S2 rating 63A current 30kW motor support 200-480V AC input 24V AC/DC control

Product description

The Siemens 3RW4037-2BB04 is a SIRIUS soft starter designed for smooth motor acceleration. It features an S2 rating, a 63A continuous current, and supports a 30kW motor at 400V. The unit operates within a voltage range of 200-480V AC and is controlled by a 24V AC/DC power supply, utilizing convenient spring-type terminals for connection.

This soft starter is ideal for applications requiring controlled motor starts to reduce mechanical stress and electrical inrush current. Industries such as manufacturing, material handling, and pump control benefit from its ability to protect motors and equipment during startup.

Stanlo Automation, a veteran-owned business, offers a wide selection of industrial automation parts, including the Siemens 3RW4037-2BB04. We provide reliable surplus and new old stock components, ensuring you find the parts you need to keep your operations running efficiently.

Technical specifications

Type	S2
Current	63 A
Power	30 kW / 400 V
Voltage Range	200-480 V AC
Control Voltage	24 V AC/DC
Terminals	Spring-type

Common applications

Motor control

Pump systems

Conveyor belts

Fan control

Manufacturing equipment

HVAC systems

Compatible systems

General motor applications Three-phase induction motors

Also known as

Siemens SIRIUS 3RW40 3RW40 starter Soft starter 63A

Replaces / compatible with

This soft starter is designed to replace direct-on-line starters in applications where reduced inrush current and mechanical shock are desired.

Technical note

Expert tip

Ensure proper heat dissipation by adhering to the 40°C ambient temperature rating to maintain optimal performance and lifespan.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RW4037-2BB04 soft starter?

The Siemens 3RW4037-2BB04 soft starter is rated for a maximum motor power of 30 kW at a 400V supply voltage. This ensures robust performance for medium to large industrial motors.