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Siemens ECOFAST Reversing Starter with Profibus DP

Siemens ECOFAST reversing starter with Profibus DP, up to 4kW/400V/0.3-9A.

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ManufacturerSiemens

Part number3RK1303-2AS51-1AA0

Type Reversing Starter

Communication PROFIBUS-DP

Max Motor Power 4 kW @ 400V (AC-3)

Current Range 0.3-9 A

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Reversing motor control Profibus-DP communication Adjustable current setting (0.3-9A) Up to 4 kW motor power Plastic enclosure Compact design

Product description

The Siemens ECOFAST reversing starter (Part Number: 3RK1303-2AS51-1AA0) is designed for direct on-line starting and stopping of three-phase AC motors, with reversing capability. It supports AC-3 motor switching capacity up to 4 kW at 400V, with an adjustable current range of 0.3-9 A. This unit features a Profibus DP interface for industrial network integration and comes in a durable plastic enclosure with IP20 protection. It does not include a brake contact.

This reversing starter is suitable for motor control applications in manufacturing, material handling, and general automation where precise control and protection of three-phase motors are required. The Profibus DP interface allows for remote control, monitoring, and diagnostics, enabling integration into complex automation systems. Its compact size and plastic housing make it easy to install in various control cabinets.

Stanlo Automation, a veteran-owned surplus industrial parts distributor, offers the Siemens 3RK1303-2AS51-1AA0 ECOFAST reversing starter. We are dedicated to providing quality industrial components to support your automation projects. Source your Siemens ECOFAST starters from Stanlo and ensure reliable performance for your motor control needs.

Technical specifications

Type	Reversing Starter
Communication	PROFIBUS-DP
Max Motor Power	4 kW @ 400V (AC-3)
Current Range	0.3-9 A
Enclosure	Plastic
Protection	IP20
Brake Contact	Without

Common applications

Motor Control Panels

Conveyor Systems

Pumps and Fans

Automated Machinery

Material Handling

Production Lines

Compatible systems

Siemens SIMATIC PLCs with Profibus DP master Control systems utilizing Profibus DP 3-phase AC motors up to 4 kW

Also known as

Siemens ECOFAST reversing motor starter 3RK1303-2AS51-1AA0 Profibus starter Siemens 4kW motor starter

Replaces / compatible with

This unit can replace existing Siemens ECOFAST starters or other reversing starters with similar power and current ratings, offering Profibus DP integration.

Technical note

Expert tip

For Profibus DP communication, ensure the correct GSD file is loaded into your master controller and the device address is configured on the starter itself.

What happens next?

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Frequently asked questions

Does the Siemens 3RK1303-2AS51-1AA0 ECOFAST starter include a brake contact?

No, the Siemens ECOFAST reversing starter, part number 3RK1303-2AS51-1AA0, does not include a brake contact. It is designed for standard motor starting and reversing operations with Profibus DP communication.