New Square D (Schneider Electric) H- or J-Frame Single Sub-Feed Circuit Breaker Adapter Kit (NF250SFBJ), 250A maximum. This is an ADAPTER KIT that installs onto an existing Square D NF panelboard — it is NOT a standalone panel. Per Schneider Electric Instruction Bulletin 80043-759-04 (Rev. 01, 09/2015): 'NF Panelboard H- or J-Frame Single Sub-Feed Circuit Breaker Adapter Kit, Installation onto an NF Panelboard.' Kit includes screws, cover plate, terminals, lugs, rail splices, terminal shields, mounting plate, support brackets, connectors, and rail extensions. Circuit breaker itself ordered separately per manufacturer spec. New/unused condition, in original manufacturer packaging.