16A 500VAC gG grey Diazed II (DII) ceramic fuse

Ceramic fuse, which is seen who knows where at home or in an industrial environment. That little porcelain piece that has prevented our homes and other appliances catching on fire for decades time.

Fuses technical details:

• Size class:
  • Diazed 2 (DII)
• Application class:
  • gG
• Speed rating:
  • Not specified
• Nominal maximum operating voltage:
  • 500VAC
• Nominal maximum current:
  • 16A
• Color coding:
  • Gray
• Blown fuse indicator:
  • Located at the back

List of different speed markings:

• FF
  • Very Fast Acting Fuse (Flink Flink)
• F
  • Fast Acting Fuse (Flink)
• M
  • Medium Acting Fuse (Mitteltrage)
• T
  • Slow Acting Fuse (Trage, Slow-blow, time-delay)) (also identified by a symbol resembling snail's shell)
• TT
  • Very Slow Acting Fuse (Trage Trage)

IEC 60269 unifies the electrical characteristics of fuses that are dimensionally interchangeable with fuses built to earlier British, German, French or Italian standards. The standard identifies application categories which classify the time-current characteristic of each type of fuse. The application category is a two-digit code.

• The first letter is "a" if the fuse is for short-circuit protection only (also known as partial range protection). An associated device must provide overload protection.
• The first letter is "g" if the fuse is intended to operate even with currents as low as those that cause it to blow in one hour. These are considered general-purpose fuses for protection of wires (also known as full range protection).

Typical fuse application categories:

• aM:
  • Partial-range breaking capacity (short-circuit protection only) for the protection of motor circuits.
• aR:
  • Partial-range breaking capacity (short-circuit protection only) for the protection of Power Semiconductors.
• gB:
  • Full-range breaking capacity (overload and short-circuit protection) robust for mining application.
• gG:
  • Full-range breaking capacity (overload and short-circuit protection) for general applications.
• gL, gF, gI, gII:
  • Same as gG (old marking practice).
• gM:
  • Full-range breaking capacity (overload and short-circuit protection) for the protection of motor circuits.
• gN:
  • Conductors sized to North American practice.
• gPV:
  • Protection of solar photovoltaic arrays.
• gRL:
  • Full-range breaking capacity (overload and short-circuit protection) for the protection of Power Semiconductors, Line & Cable Protection.
• gS:
  • Full-range breaking capacity (overload and short-circuit protection) for the protection of batteries & power semiconductors in drives.
• gTr:
  • Full-range breaking capacity (overload and short-circuit protection) for protection of transformers.
• gR:
  • Full-range breaking capacity (overload and short-circuit protection) for the protection of Power Semiconductors or rectifiers.