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Siemens 48JB31AA4 - Thermal Overload Relay 165A

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Siemens 48JB31AA4 is a thermal overload relay designed to protect AC induction motors from sustained overcurrent conditions by monitoring motor current and tripping a contactor when overheating is detected. This relay operates within a current range of 165 to 165 amperes, ensuring precise protection for motors drawing a full load of 165 amps. The device weighs 1.3228 lb and features a robust thermal construction that responds to heat generated by excessive current flow. It complies with industry standards for motor protection in industrial environments. Typical applications include protecting conveyors, pumps, fans, and compressors in manufacturing and process control systems.

Key Features & Specifications
  • Type: Thermal Overload Relay
  • Relay Style: Thermal
  • Amperage Minimum: 165 A
  • Amperage Maximum: 165 A
  • Weight: 1.3228 lb
  • Manufacturer: Siemens
  • Item Subcategory: Overload Relay