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Interior of a Federal Pacific Electric Stab-Lok circuit breaker panel. Stab-Lok is a brand name of electrical circuit breakers that were manufactured primarily by Federal Pacific Electric from 1950 to 1980.
The GE-215 (1963) [3] [8] was a scaled-down version of the GE-225, including only six I/O channels and only 4 kilowords or 8 kilowords of core. The GE-205 (1964). [2] The GE-235 (1964) [3] was a re-implementation of the GE-225 with three times faster memory than the original. [9] The GE-235 consisted of several major components and options ...
A distribution board (also known as panelboard, circuit breaker panel, breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.
A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...
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.
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.