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Siemens NFK3B250L - Molded Case Circuit Breaker 250A 600VAC

Siemens
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The Siemens NFK3B250L is a molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for industrial electrical systems. It features a 250A current rating and is engineered for use in 600VAC applications, housed within a robust, compact frame that ensures durability in demanding environments. This unit is constructed to meet stringent industry standards, including UL 489, for safety and performance compliance. Its typical applications include protecting feeders, branch circuits, and motors within manufacturing plants, data centers, and commercial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Trip
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Frame Size: NF Frame
  • Trip Type: Fixed
  • Poles: 3
  • AIC Rating: Typically 65kA at 480VAC (verify for specific configuration)
  • Connection: Lug or Stud
  • Standards: UL 489, IEC 60947-2
  • Installation Type: Fixed Mount
  • Frequency Rating: 50/60 Hz
  • Operating Temperature: -25°C to +70°C
  • Weight: 7 lb
  • Applications: Industrial feeder and branch circuit protection, motor circuit protection


Product Identification
  • UPC: 887621128999
  • GTIN: 00887621128999