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Siemens 3UB8123-4DW2 - Solid State Overload Relay 5.5-22A

Siemens
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Siemens 3UB8123-4DW2 is a solid-state overload relay from the ESP200 family, designed for three-phase motor overload and phase-failure protection. It provides an adjustable current range from 5.5 to 22 A and supports operational voltages up to 690 V AC, with a trip class of 10 for reliable protection. The relay weighs 5 lb and features a 3-pole design with manual or automatic reset, auxiliary contacts (1 NO + 1 NC), and direct mounting to Siemens 3RT10 contactors. It operates within a temperature range of -13 to 158 °F (-25 to 70 °C) and is built for industrial motor control applications. This device ensures dependable protection in demanding environments such as manufacturing and process automation.

Key Features & Specifications
  • Type: 3UB8
  • Family: ESP200
  • Relay Style: Solid State
  • Poles: 3-pole
  • Amperage Minimum: 5.5 A
  • Amperage Maximum: 22 A
  • Current Adjustment Range: 12–18 A
  • Rated Operational Voltage: Up to 690 V AC
  • Trip Class: Class 10
  • Reset Type: Manual or Automatic
  • Mounting Style: Direct mount to Siemens 3RT10 contactors
  • Auxiliary Contacts: 1 NO + 1 NC
  • Temp Rating: -13-158 °F (-25-70 °C)
  • Weight: 5 lb


Product Identification
  • UPC: 66264389721
  • GTIN: 00662643897210