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Siemens 3RU21261KB0 - Thermal Overload Relay (9-12.5A)

Siemens
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Siemens 3RU21261KB0 is a thermal overload relay designed for protecting three-phase AC motors from damage due to overload or phase failure. It features an adjustable current setting range from 9 to 12.5 A, housed in a compact, DIN-rail mountable enclosure measuring 4.016 x 1.929 x 4.016 inches and weighing 0.397 lb. This Sirius family relay is constructed with a thermal tripping mechanism and includes one normally-open and one normally-closed auxiliary contact for control circuit signaling. It complies with major industry standards including RoHS and WEEE directives, making it suitable for integration into motor control centers, industrial machinery, and automation panels where reliable motor 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, 9 - 12.5 A
  • Dimensions: 4.016 x 1.929 x 4.016 inches (102 x 49 x 102 mm)
  • Standards: RoHS, WEEE (2012/19/EU), REACH Art 33 compliant
  • Applications: Motor protection in control panels, industrial machinery, and automation systems
  • Relay Style: Thermal
  • Aux Contacts: 1NO / 1NC
  • Family: Sirius
  • Country of Origin: Germany
  • Weight: 0.397 lb


Product Identification
  • UPC: 662643919165
  • GTIN: 00662643919165