NF Panelboard interiors can be used for applications such as commercial buildings, industrial buildings, stadiums, and offices. These interiors provide protection for commercial and industrial applications. NF Panelboards are versatile panelboards that feature a wide selection of circuit breakers, accessories, and ready to install kits. NF Panelboards have modular construction to accept field installable accessories and conversion kits. This panelboard accessory is a breaker kit used for sub feed systems. This kit is rated at 250A and for J frame breakers. This sub feed lug kit is UL listed and CSA certified by UL.