Block has 8-32 screw terminals for all fuse outputs and 10-32 threaded studs for mains. Rated for 30 AMP maximum per circuit, 100 AMP Total for the block at 32 Volts. Independent Bus makes for easy connection for return ground. Clear insulating cover has recess for labels and protects condutive parts from accidental contact. Cover also holds 2 spare fuses.