The SIEMENS 3RU2146-4JB0 thermal overload relay is engineered to protect motors in the 45 to 63 A current range. With high-performance overload and phase failure protection, it ensures safe, reliable, and uninterrupted motor operation in industrial applications. It is designed for seamless integration with Siemens 3RT contactors for efficient motor starter assembly.

      Key Features:

• Adjustable current range: 45 A to 63 A

• Phase failure protection built-in for enhanced safety

• Trip Class 10 for quick overload response

• Selectable manual and automatic reset modes

• Ambient temperature compensation for accurate tripping

• Test and reset buttons for easy diagnostics

• Direct mounting on Siemens 3RT contactors

• DIN rail mountable for flexible installation

• Conforms to IEC/EN 60947-4-1 standards