Siemens 3UB8123-4LW2 - Solid State Overload Relay 160-630A
Siemens 3UB8123-4LW2 - Solid State Overload Relay 160-630A

Siemens 3UB8123-4LW2 - Solid State Overload Relay 160-630A

Siemens
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Siemens 3UB8123-4LW2 is a solid state overload relay from the ESP200 family designed for advanced motor protection in industrial environments. It operates with an adjustable current range of 160 to 630A and a 600VAC contact rating, featuring selectable trip classes for precise protection. The relay measures 3.543 x 4.213 x 3.15 inches, weighs 1 lb, and uses screw terminal connections for installation. It complies with industry standards for phase loss and unbalance protection, tripping in less than 3 seconds for phase loss. Typical applications include motor control centers and heavy machinery in manufacturing and processing facilities.

Key Features & Specifications
  • Manufacturer: Siemens
  • Part Number: 3UB8123-4LW2
  • Family: ESP200
  • Type: 3UB8
  • Item Subcategory: Overload Relay
  • Relay Style: Solid State
  • Amperage Minimum: 160 A
  • Amperage Maximum: 630 A
  • Voltage: 600VAC
  • Poles: 3
  • Mounting Type: Screw terminals
  • Interrupt Rating: 600A at 600VAC
  • Trip Unit: Solid state, Class 5, 10, 20, or 30 (selectable)
  • Contact Form: 1NC-1NO
  • Phase Loss Protection: Trips in less than 3 seconds
  • Phase Unbalance Protection: Trips based on selected trip class
  • Temperature Rating: -25°C to 60°C
  • Dimensions: 3.543 x 4.213 x 3.15 inches
  • Weight: 1 lb


Product Identification
  • UPC: 66264389725
  • GTIN: 00662643897258