The SIEMENS 3RB2066-1GC2 thermal overload relay is engineered to protect large motors with a current range of 55 to 250 A. It delivers reliable overload and phase failure protection, ensuring high operational safety and minimizing motor damage in demanding industrial environments. Designed for seamless integration with Siemens 3RB20 series contactors and motor starters, it supports robust motor control systems.

    Key Features:

• Adjustable current range: 55 A to 250 A

• Advanced phase failure protection

• Trip Class 10 for rapid and precise overload response

• Selectable manual and automatic reset modes

• Ambient temperature compensation for consistent protection

• Test and reset buttons for easy maintenance and diagnostics

• Rugged design for heavy industrial use

• Compatible with Siemens 3RB20 contactors and motor starters

• Complies with IEC/EN 60947-4-1 and other applicable standards