The SIEMENS 3RU2146-4MB0 thermal overload relay is designed to protect motors operating in the 80 to 100 A current range. Ideal for heavy industrial applications, it offers precise protection against overload and phase failure, ensuring high motor uptime and operational safety. This relay mounts directly onto Siemens 3RT contactors for compact and efficient motor starter configurations.

    Key Features:

• Adjustable current range: 80 A to 100 A

• Integrated phase failure protection

• Trip Class 10 for fast and accurate motor overload protection

• Manual and automatic reset selectable

• Ambient temperature compensation for stable performance in varying conditions

• Test and reset buttons for easy maintenance and diagnostics

• Direct mounting on Siemens 3RT contactors

• DIN rail mountable

• Standards compliance: IEC/EN 60947-4-1