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Letters and numbers stating a fuse's current, speed and voltage.
Also known as: Fuse markings, T and F fuse codes, Breaking capacity marking
A fuse's markings state more than its current: a letter code gives its speed, and the voltage rating says the highest circuit it can safely interrupt. Fitting a fuse of the right current but the wrong voltage rating can leave an arc burning after the element has melted.
States a fuse's rated current, its breaking speed and the maximum voltage at which it can safely interrupt a fault.
Contexts: Technical drawing, Electrical equipment
Uses letter codes for speed — a quick-acting fuse and a time-delay one of the same current are not interchangeable in a motor or transformer circuit.
Contexts: Technical drawing, Electrical equipment
Includes a voltage rating that is a safety limit rather than an operating value, since below it the arc is extinguished and above it may not be.
Contexts: Technical drawing, Electrical equipment
A short line of letters and numerals printed on a fuse cap or beside a fuse symbol on a drawing.