Bus Connection Hardware for APNB Panelboards. Bolt-On Type for Mounting 1 SF Frame Circuit Breaker. -Kit # SFS1K Replaces OEM AMCB3FJFP. All kits come complete with detailed safety and installation instructions and include all necessary screws, brackets, and an assortment of deadfront cover plates to fit 27-40" wide boxes. If additional blank filler plates are needed see BFP1GE, BFP2GE and BFP3GE.