We find that these 6 & 12 circuit fuse blocks work excellently with our 24 and 12 volt electrical components. For example, it allows you to run 6 or 12 individually fused 12 volt circuits from your 12 vehicle's system. Or for ex-military vehicles, it allows you to run 6 or 12 individually fused 12 volt circuits from your single 24-12 volt converter, or 6 or 12 individually fused 24 volt circuits directly from your vehicle's 24 volt electrical system. Additional Details ------------------------------ Product description: We find that these 6 & 12 circuit fuse blocks work excellently with our 24 and 12 volt electrical components. For example, it allows you to run 6 or 12 individually fused 12 volt circuits from your 12 vehicle's system. Or for ex-military vehicles, it allows you to run 6 or 12 individually fused 12 volt circuits from your single 24-12 volt converter, or 6 or 12 individually fused 24 volt circuits directly from your vehicle's 24 volt electrical system.