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

United Fuses
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The Siemens 3UB8123-4NW2 is a solid-state overload relay designed to protect three-phase motor starters from overcurrent conditions. This switchable direct-mount device supports a current rating range of 400 to 1220A, ensuring robust protection for high-power industrial motors. Weighing 5.19 lb, the 3UB family relay is constructed for direct integration with compatible motor starter frames. It complies with RoHS standards, confirming its adherence to environmental and safety regulations. Typical applications include heavy-duty motor control centers and industrial automation systems where precise, reliable overload protection is critical.

Key Features & Specifications
  • Type: Solid State Overload Relay
  • Voltage: Not specified
  • Current: 400-1220A
  • Protection: Solid State
  • Phase: 3
  • Circuit Breaker Mounting Style: Switchable Direct
  • Compatible Frames: Motor Starters
  • Standards: RoHS
  • Weight: 5.19 lb


Product Identification
  • UPC: 066264389727
  • GTIN: 00662643897272