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Siemens 48ATK3S00 - Solid State Overload Relay 133-400A

Siemens
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Siemens 48ATK3S00 is a solid state overload relay from the ESP200 family designed for precise motor protection in three-phase industrial systems. It provides adjustable overload protection for motors rated from 133 to 400 amps at 600VAC, with a current transformer input and selectable trip classes for flexible application. The relay weighs 5 lb, features a DIN Rail mounting style, and includes a 1NO/1NC contact configuration with manual, automatic, or remote reset options. It is certified to cUL and CSA standards, offers a repeat accuracy of less than 1%, and operates reliably in temperatures from -25 to 60°C. This unit is well-suited for protecting motors in pumps, conveyors, compressors, and other heavy machinery within manufacturing and process industries.

Key Features & Specifications
  • Type: Overload Relay
  • Family: ESP200
  • Relay Style: Solid State
  • Amperage Minimum: 133
  • Amperage Maximum: 400
  • Weight: 5 lb
  • Voltage: 600VAC
  • Poles: 3
  • Mounting Type: DIN Rail
  • Interrupt Rating: 600V/1kA (standard), 600V/100kA (high fault, with 60A RK5 fuse)
  • Series/Frame: ESP200, Frame 48AT
  • Trip Unit: Electronic, selectable Class 5, 10, 20, 30
  • Reset: Manual, automatic, or remote
  • Certifications: cUL, CSA
  • Operating Temperature: -25 to 60°C
  • Contact Configuration: 1NO/1NC
  • Repeat Accuracy: <1%