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Siemens 3RU1146-4LB0 - Thermal Overload Relay (70-90A)

Siemens
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The Siemens 3RU1146-4LB0 is a thermal overload relay designed to provide reliable motor protection by monitoring current and tripping in the event of overloads or phase failures. It is rated for a maximum operational voltage of 690V AC and features an adjustable current setting range from 70 to 90 amps to match specific motor full-load amperage. The relay is constructed with a robust, compact design for easy integration into motor control centers and starter assemblies, weighing 10 lb for substantial build quality. It complies with relevant international industrial standards for safety and performance. This component is typically applied in industrial settings for protecting three-phase AC motors in pumps, fans, compressors, and conveyor systems.

Key Features & Specifications
  • Type: Thermal overload relay for motor protection
  • Voltage Rating: 690V AC
  • Current Rating: 70 - 90 A (adjustable)
  • Relay Style: Thermal
  • Weight: 10 lb
  • Item Subcategory: Overload Relay


Product Identification
  • UPC: 075455441259
  • GTIN: 00754554412597