Square D 225-400 amp NF-Panelboard Interior


The NF panelboard offers superior performance and application flexibility for commercial and industrial electrical systems up to 600Y/347 Vac. This versatile lighting and power distribution panelboard features a wide selection of circuit breakers, accessories, and ready-to-install kits, as well as 200% rated neutrals for non-linear loads.

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  • NF Panelboards are convertible from main lug to main breaker
  • Use with EDB, EDG and EDJ branch circuit breakers
  • Interior has a maximum voltage rating of 600/347 VAC
  • Interrupt current rating of up to 65 kA
  • 4 wire system available in 250A/400A, and 42/66 circuits configuration
  • NF Panelboard interiors are field convertible to top or bottom feed
  • Some factory installed options are split bus, lighting contactors, compression lugs, surge protection devices, and phenolic nameplates
  • Lug connections will accept 6 AWG to 350 kcmil aluminum wire

NQ Panelboards Safety Features

  • Factory-installed IP2X barriers for NF Panelboards reduce the risk of accidental contact with energized components if a cover is removed
  • Plastic barriers cover Mains (lugs or circuit breaker), copper bus, and branch circuit breakers, providing IP2X per IEC 60529 protection for undergrounded parts
  • All standard NEMA 1, 2, 3R, 4/4X, 5, or 12 enclosures available up to 225 A
  • Higher ampacity panels are supplied with NEMA 1 enclosures

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