Siemens 3RU21161GB1

Siemens 3RU21161GB1 Control Relay Overview

The Siemens 3RU21161GB1 control relay, supplied internationally, serves a critical function in industrial automation by monitoring phase sequence integrity. This device ensures the correct order of electrical phases, safeguarding machinery from potential damage due to phase loss or incorrect rotation.

Key Technical Features and Applications of 3RU21161GB1

• Monitors three-phase power sequence to prevent motor malfunctions in industrial drives.
• Provides reliable phase loss detection, enabling prompt shutdowns in control circuits to protect equipment.
• Compact design facilitates integration into control panels with limited space without compromising performance.
• Configured for use in complex automation systems requiring precise phase sequence verification.

This relay is particularly vital in applications such as motor control centers and automated manufacturing lines where phase accuracy is crucial for operational safety and equipment longevity.