Littelfuse cross reference Bussmann
250A 1000VDC PHOTOVOLTAIC CLASS J FUSE / BOX ROHS COMPLIANT: YES
FUSE CARTRIDGE 250A 600VAC/1KVDC
FUSE-J SOLAR 600VAC/1000VDC UL
SPFJ Series Fast-Acting 1000 V 250 A Ø 38.1 x 144.02 mm Solar Fuse

Littelfuse cross reference Bussmann