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Siemens SIRIUS 3RW4453-2BC36 Soft Starter

Siemens SIRIUS 3RW4453-2BC36 soft starter.

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ManufacturerSiemens

Part number3RW4453-2BC36

Series SIRIUS 3RW44

Rating (575V) 494A, 500hp (standard) / 856A, 950hp (inside-delta)

Voltage 400-690V AC

Control Voltage 115V AC

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12-month warranty

All units tested

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Same-day dispatch

Order by 2pm CST

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Worldwide delivery

US, EU, Asia, Middle East

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Veteran-owned

CAGE: 9NK75

Soft start/stop Integrated bypass Motor protection Reduced mechanical stress Reduced inrush current Spring-type terminals

Product description

The Siemens SIRIUS 3RW4453-2BC36 is a soft starter designed for smooth acceleration and deceleration of three-phase motors. It offers integrated bypass functionality for full-voltage starting after ramp-up, reducing heat and stress on the motor.

This soft starter is suitable for applications requiring controlled motor start-up, such as pumps, fans, compressors, and conveyors, helping to prevent mechanical shock and electrical surges. It's rated for motors up to 500 hp at 575V.

Stanlo Automation, a veteran-owned surplus distributor, offers this Siemens SIRIUS soft starter. While this product is phased out, we provide reliable access to such components. Note that the preferred successor is the 3RW5548-2HA16.

Technical specifications

Series	SIRIUS 3RW44
Rating (575V)	494A, 500hp (standard) / 856A, 950hp (inside-delta)
Voltage	400-690V AC
Control Voltage	115V AC
Terminals	Spring-type
Manufacturer	Siemens
Status	Phased-out

Common applications

Pump control

Fan control

Compressor starting

Conveyor systems

Material handling

Motor soft start

Compatible systems

Three-phase AC motors

Also known as

Siemens Soft Starter 3RW4453 SIRIUS 3RW44 3RW4453

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5548-2HA16. It can replace older motor starting methods like direct-on-line or star-delta starters.

Technical note

Expert tip

For optimal performance and longevity, ensure the ambient temperature and motor load are within the specified limits for this soft starter.

What happens next?

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Frequently asked questions

What is the successor to the Siemens 3RW4453-2BC36?

The Siemens 3RW4453-2BC36 soft starter is phased out. The preferred successor is the Siemens SIRIUS 3RW5548-2HA16, which offers advanced features and improved performance.