Overload relay 50...200 A motor protection Size S6 Class 5...30E - 3RB2153-4FW2

Product Description

Siemens SIRIUS Overload Relay 50–200 A, Size S6, Class 5…30E – 3RB2153-4FW2

The Siemens 3RB2153-4FW2 is a SIRIUS electronic overload relay designed for motor protection in high-current industrial applications. It provides reliable protection against overload, phase failure, and current imbalance for motors in the 50 A to 200 A range, making it suitable for heavy-duty motor starter assemblies.

This relay belongs to Size S6 and is commonly used in combination with Siemens contactors in motor control centers (MCC), pump stations, compressors, conveyors, and industrial drives, ensuring safe and efficient motor operation.

Key Features:

• Siemens SIRIUS electronic overload relay 

• Part Number: 3RB2153-4FW2 

• Current setting range: 50 – 200 A 

• Size: S6 frame 

• Trip class: Class 5 to Class 30 (adjustable) 

• Suitable for contactor mounting or stand-alone installation 

• Main circuit: straight-through current transformer design 

• Auxiliary circuit: screw terminal connection 

• Manual / Automatic reset selectable 

• Integrated phase failure and imbalance protection 

• Internal ground fault detection feature 

• High reliability for continuous motor operation