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Square D NCL261000 - Molded Case Circuit Breaker 1000A 600V

Square D
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Square D NCL261000 is a 2-pole molded case circuit breaker designed for thermal magnetic protection in industrial power distribution systems. It is rated for 600V AC, 1000A continuous current, and delivers a 100kA interrupting capacity at 480V for robust fault clearance. The N Frame unit weighs 73 lb, features a feed-thru connection, and operates on a single-phase configuration with LI (Long-Time and Instantaneous) trip functions. This breaker complies with applicable industry standards for overcurrent protection in high-amperage applications. Typical uses include main switchboard protection, large motor circuits, and heavy industrial feeder lines.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, NCL Series, N Frame
  • Voltage Rating: 600V AC
  • Current Rating: 1000A
  • Poles: 2
  • Phase: 1
  • AIC Rating: 100kA@480V
  • Connection: Feed-Thru
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 73 lb
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Feed-Thru
  • Frequency Rating: 50/60 Hz
  • Standards: UL, CSA, NEMA
  • Applications: Industrial power distribution, main switchboards, large motor circuits


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