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...ground the portion that has been isolated from the system for ensuring the safety of equipment and the personnel working on it. ...disconnector while it supplies a circuit. Standards in some countries for safety may require either local motor isolators or lockable handles (which can be ...

...007-02-14 |title=Electrical Standard; Final Rule |publisher=[[Occupational Safety and Health Administration]] |website=OSHA.gov |access-date=June 13, 2019 }} ...s protected from [[electrical injury]] by metal-enclosed circuit breakers, switches, and [[Fuse (electrical)|fuses]]. There may also be instruments and control ...

A '''thermal cutoff''' is an [[Electricity|electrical]] [[safety]] device (either a thermal fuse or thermal switch) that interrupts [[electr ...ppliance]]s such as [[coffeemaker]]s and [[hair dryer]]s. They function as safety devices to disconnect the current to the [[heating element]] in case of a m ...

...rger than others.<ref>[http://www.eaton.com/Electrical/USA/MarketSolutions/Safety/RemoteRackingandControl/ Remote racking and control]</ref> Many systems eit [[Category:Safety switches]] ...

...ts which can produce arcing times of 100 MS or more. Additionally in these switches, the contact surface is also the surface upon which electrical arcs tend to ...{Cite web|url=https://www.bre.co.uk/page.jsp?id=3211|title=BRE Group: Fire safety and solar electric/photovoltaic systems|website=www.bre.co.uk|access-date=2 ...

====Disconnectors and earthing switches==== [[Disconnector]]s and earthing switches are safety devices used to open or to close a [[electronic circuit|circuit]] when ther ...

* [[International Electrotechnical Commission|IEC]] 61557-8:2014, "Electrical safety in low voltage distribution systems up to 1&nbsp;000&nbsp;V a.c. and 1&nbsp * [[International Electrotechnical Commission|IEC]] 61557-9:2014, "Electrical safety in low voltage distribution systems up to 1000&nbsp;V a.c. and 1500&nbsp;V ...

...Electrical Practice, Vol 2).jpg|thumb|Liquid rheostats used as motor start switches, circa 1900]] ...on that could be described as “brine”. The whole device was fenced off for safety. ...

...ic power system]], a '''switchgear''' is composed of electrical disconnect switches, [[fuse (electrical)|fuse]]s or [[circuit breaker]]s used to control, prote ...er levels and voltages rapidly escalated, making opening manually operated switches too dangerous for anything other than [[Galvanic isolation|isolation]] of a ...

[[File:switches-electrical.agr.jpg|thumb|upright=1.4|Electrical switches. Top, left to right: circuit breaker, [[mercury switch]], wafer switch, [[D ...y be wired into one circuit to allow convenient control of light fixtures. Switches in high-powered circuits must have special construction to prevent destruct ...

...sion medium. Vacuum interrupters can be used for circuit-breakers and load switches. Circuit-breaker vacuum interrupters are used primarily in the [[energy ind ...ented the results at an [[IEEE|AIEE]] meeting that year, and predicted the switches' commercial use. In 1927, [[General Electric]] purchased the [[patent]] rig ...

[[Category:Safety switches]] ...

...ly distinguishes between a harmless arc (incidental to normal operation of switches, plugs, and brushed motors), and a potentially dangerous arc (that can occu ...{{cite book |date=2015 |title=C22.1-15 — Canadian Electrical Code, Part I: Safety Standard for Electrical Installations |publisher=Canadian Standards Associa ...

{{Short description|Electrical safety device}} An '''earth-leakage circuit breaker''' ('''ELCB''') is a safety device used in electrical installations with high [[Earthing system|Earth i ...

In special cases, e.g., high voltage switches, gases with good dielectric properties and very high [[breakdown voltage]]s ...Used for cooling of e.g. [[hydrogen-cooled turbogenerator]]s. Handling and safety problems. Very fast deexcitation, can be used in high repetition rate [[spa ...

Some extension cords also incorporate safety features such as a polarized plug and receptacle, [[ground (power)|grounded ==Safety== ...

...ormed by digital instruments still called ''[[protective relay]]s'' or ''[[safety relay]]s''. ...es, the terminology applied to switches is also applied to relays; a relay switches one or more ''poles'', each of whose [[Electrical contacts|contacts]] can b ...

*** [[Safety capacitor]] ** [[Rotary encoder]], Shaft Encoder – Optical, magnetic, resistive or switches – detects absolute or relative angle or rotational speed ...

...switching thresholds in only one polarity of the magnetic field. Omnipolar switches have two sets of switching thresholds, for both positive and negative polar ...nd require a more significant field strength to change states than bipolar switches require. The naming distinction between "bipolar" and "latch" may be a litt ...

...//viewer.zmags.com/publication/643b6a63#/643b6a63/14|title=Auto-Recloser - Safety and Minimising Downtime|last=Thompson|first=Stan|website=Transmission & Dis ...gs it is sometimes deployed. Single Phase Reclosers can be used to improve safety on these lines during fault events. ...