The National Electric Code Now Permits Edison-Base Fuses to be Used Only for Replacements in Existing Installations and then, Only When There is No Evidence of Overfusing or Tampering; All New Edison-Based Fuseholders Must have Type S Fuse Adapters Installed Before they are Placed in Service; Designed to Prevent Installation of Wrong Size Fuses, Type S Adapters (SAO Series) Screw into Edison-Base Fuseholders So they May Accept Type S Fuses, Once Installed the Adapters Cannot be Removed

Specifications:

Type: Edison
Voltage Rating: 125 VAC
Current Rating: 3.2 Ampere
Approval: UL