bimetal relay 57...70 A size S3 class 10 DO-3US5800-2V8K

Product Description

Siemens SIRIUS Bimetal Relay – 57…70 A, Size S3, Class 10 – 3US5800-2V8K

The Siemens 3US5800-2V8K is a SIRIUS thermal overload relay (bimetal type) designed for reliable protection of three-phase motors in heavy-duty industrial applications. It safeguards motors against overload, phase failure, and excessive heating, ensuring long service life and stable operation of electrical drive systems.

This relay belongs to Size S3 and provides an adjustable current range of 57 to 70 A, making it suitable for high-capacity motors used in demanding industrial environments. With a Class 10 tripping characteristic, it ensures fast disconnection under overload conditions, preventing motor winding damage and reducing downtime.

It is designed for direct mounting with Siemens SIRIUS contactors, making it ideal for motor starters, MCC panels, compressors, pumps, conveyors, and heavy industrial automation systems.

Key Features:

• Siemens SIRIUS bimetal thermal overload relay 

• Adjustable current range: 57 – 70 A 

• Size S3 heavy-duty construction 

• Class 10 tripping characteristic for fast motor protection 

• Phase failure protection for enhanced motor safety 

• Direct mounting with SIRIUS contactors 

• Manual/automatic reset option (variant dependent) 

• Screw terminal connection for secure wiring 

• Proven thermal bimetal sensing mechanism 

• Suitable for high-power industrial motor applications