Littelfuse H217004P Fast-Acting 5x20 Glass Body Fuse, 4 Amp 5×20mm Time-Lag surge withstand glass body cartridge fuse designed to IEC specification Features: Designed to International (IEC) Standards for use globally Meets the IEC 60127-2, Sheet 2 specification for fastacting fuses Available in cartridge and axial lead form RoHS compliant and lead-free Applications: Used as supplementary protection in appliance or utilization equipment to provide individual protection for components or internal circuits.