Abstract: A fuse box having a housing formed with a first, second, and third openings therein. A screw-fastened type fuse having two terminals is inserted into the housing through the second opening. Conductors connected to the fuse are directed to external circuits through the first opening. The third openings oppose the terminals of the fuse inserted and have guide grooves. Each of the terminals is connected together with the conductors to the housing by means of a bolt inserted through the third opening. A cover is attached to the second opening after the terminals of fuse are securely connected to the housing together with the conductors. The cover is formed with a lid continuously integral with the cover and the lid is accepted and guided by the guide grooves to close the third opening when the cover is assembled to the housing.