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A fuse consists of a metal strip or wire fuse element, of small cross-section compared to the circuit conductors, mounted between a pair of electrical terminals, and (usually) enclosed by a non-combustible housing. The fuse is arranged in series to carry all the charge passing through the protected circuit. The resistance of the element ...
In electrical distribution, a fuse cutout or cut-out fuse (often referred to as a cutout) is a combination of a fuse and a switch, used in primary overhead feeder lines and taps to protect distribution transformers from current surges and overloads. An overcurrent caused by a fault in the transformer or customer circuit will cause the fuse to ...
3–5 times rated current I n, e.g. a nominally 10 A device will trip at 30–50 A C 5–10 times I n: D 10–14 times I n: K 8–12 times I n. For the protection of loads that cause frequent short-duration (approximately 400 ms to 2 s) current peaks in normal operation Z 2–3 times I n for durations on the order of tens of seconds.
These terminals are manufactured by many companies, commonly using the terms "quick disconnect", "quick connect", "tab" terminals, "spade" terminals [1] or blade connectors; without qualifiers, the first two could be mistaken for plumbing connections. [2]
In electrical engineering, a disconnector, disconnect switch or isolator switch is a type of switching device with visible contacts, used to ensure that an electrical circuit is completely de-energized for service or maintenance.
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