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Siemens 3RU21261EB0 - Thermal Overload Relay (2.8-4A)

Siemens
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Siemens 3RU21261EB0 is a thermal overload relay designed for protecting three-phase AC motors from damage due to overcurrent conditions. It features an adjustable current setting range from 2.8 to 4 A and is constructed within a compact, DIN-rail mountable housing measuring 4.016 x 1.929 x 4.016 inches and weighing 0.395 lb. This relay complies with major industry standards including RoHS and WEEE, and its integrated 1NO/1NC auxiliary contact provides signaling capability for control circuits. It is typically applied in industrial motor control centers, conveyor systems, and pump controls where reliable overload protection is critical.

Key Features & Specifications
  • Type: Thermal overload relay, 3RU21 series, DIN-rail mounted
  • Voltage Rating: For use in three-phase AC motor circuits
  • Current Rating: Adjustable from 2.8 A to 4 A
  • Dimensions: 4.016 x 1.929 x 4.016 inches (102 x 49 x 102 mm)
  • Standards: RoHS, WEEE, REACH Art 33 compliant
  • Applications: Motor protection for pumps, conveyors, fans, and compressors
  • Relay Style: Thermal
  • Aux Contacts: 1NO/1NC
  • Amperage Minimum: 2.8 A
  • Amperage Maximum: 4 A
  • Weight: 0.395 lb
  • Family: Sirius
  • Country of Origin: Germany


Product Identification
  • UPC: 662643919011
  • GTIN: 00662643919011