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Siemens SIRIUS 3RW4037-1TB05 Soft Starter - 63A, 37kW

Siemens SIRIUS 3RW4037-1TB05: 63A, 37kW soft starter with motor protection.

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ManufacturerSiemens

Part number3RW4037-1TB05

Type Soft Starter

Series SIRIUS 3RW40

Size S2

Rated Current 63 A

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Smooth motor starting Integrated thermistor motor protection 63A continuous current rating 37kW motor capacity 400-600V AC main voltage 24V AC/DC control voltage

Product description

The Siemens SIRIUS 3RW4037-1TB05 is a Size S2 soft starter designed for smooth motor acceleration. It is rated for a continuous current of 63A and can control motors up to 37 kW at 500V. The device operates with a control voltage range of 400-600V AC for the main circuit and 24V AC/DC for the control circuit.

This soft starter incorporates integrated thermistor motor protection for safeguarding the motor against overheating. It features screw terminals for reliable connections and is designed for optimal performance in demanding industrial applications. Its robust construction ensures durability and long service life.

Stanlo Automation, a veteran-owned surplus parts distributor, provides access to essential components like the Siemens SIRIUS 3RW4037-1TB05. Equip your systems with reliable motor control solutions sourced from a trusted supplier.

Technical specifications

Type	Soft Starter
Series	SIRIUS 3RW40
Size	S2
Rated Current	63 A
Motor Power	37 kW (at 500V)
Main Circuit Voltage	400-600 V AC
Control Voltage	24 V AC/DC
Terminals	Screw Terminals
Protection	Thermistor Motor Protection

Common applications

Pump control

Fan control

Conveyor systems

Compressor control

General motor starting

Industrial machinery

Compatible systems

Standard AC induction motors 400-600V AC power systems 24V AC/DC control circuits

Also known as

Siemens 3RW40 soft starter SIRIUS 3RW4037 Siemens motor starter S2

Replaces / compatible with

Replaces DOL (Direct On Line) starters for smoother motor ramp-up and reduced mechanical stress. Compatible with standard motor control circuits.

Technical note

Expert tip

The integrated thermistor motor protection requires external PTC thermistor probes for proper functionality, ensuring accurate temperature monitoring.

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Frequently asked questions

What is the maximum motor power the Siemens SIRIUS 3RW4037-1TB05 soft starter can handle?

The Siemens SIRIUS 3RW4037-1TB05 soft starter is rated to control motors with a maximum power of 37 kW at 500V. It can handle a continuous current of 63A, ensuring robust motor protection and control.