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Siemens UEC4040ED2 - Breaker Type 40A 240V 3-Phase

Siemens
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Siemens UEC4040ED2 is a 3-phase, 4-wire breaker-type bus plug designed for overcurrent protection in low-voltage busway systems. It operates at 240VAC with a 40A trip rating and a 10kA interrupting capacity at 240V, providing reliable circuit isolation within XL-U family busway. The unit weighs 35 lb and is built for ED2 frame compatibility, featuring an IP40-rated indoor enclosure with integral ground stabs and a mechanical interlock that prevents installation or removal while energized. It complies with UL 857, UL 489, CSA C22.2 No. 27, and NEMA BU 1.1 standards, and includes a finger-safe design for enhanced operator safety. This bus plug is suited for industrial and commercial power distribution systems requiring secure, code-compliant branch circuit protection.

Key Features & Specifications
  • Type: Breaker Type
  • Family: XL-U
  • Voltage Rating: 240V
  • Current Rating: 40A
  • Phase: 3
  • Wire: 4
  • AIC Rating: 10kA@240V
  • Compatible Frames: ED
  • Weight: 35 lb
  • Enclosure Rating: IP40
  • Interrupt Rating: 10kA
  • Standards: UL 857, UL 489, CSA C22.2 No. 27, NEMA BU 1.1
  • Design Features: Integral Ground Stabs, Mechanical Interlock, Finger-Safe Design