5018 ST Glass Fuse Block without Negative Bus - 6 CircuitFeatures:. Clear insulating cover with label recesses for accept Large Format Labels. Cover insulates all conductive parts, satisfying ABYC/USCG requirements and storing spare fuses. Tin-plated copper buses and Phosphor Bronze fuse clips give 30 Ampere rating per circuit. Accepts AGC (Fast Acting), MDL (Time-Delay) and all other 3AG Glass Fuses. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.