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Siemens 3UB8123-4NW2 - Solid State Overload Relay 400-1220A

United Fuses
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Siemens 3UB8123-4NW2 is a solid-state overload relay designed for protecting motor starters against overcurrent conditions. This three-phase device supports a current rating range of 400 to 1220A and is built for switchable direct mounting onto compatible motor starter frames. The unit weighs 5.19 lb and complies with RoHS standards for environmental safety. It is suitable for heavy-duty industrial motor control applications requiring reliable solid-state protection.

Key Features & Specifications
  • Type: Overload Relay
  • Protection: Solid State
  • Phase: 3
  • Current Rating: 400-1220A
  • Circuit Breaker Mounting Style: Switchable Direct
  • Compatible Frames: Motor Starters
  • Weight: 5.19 lb
  • Standards: RoHS
  • Poles: 3
  • Voltage Rating: 600V AC
  • Coil Type: AC Coil
  • Mounting Type: NEMA Frame


Product Identification
  • UPC: 066264389727
  • GTIN: 00662643897272