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2. Thermal cutoff - Wikipedia

   en.wikipedia.org/wiki/Thermal_cutoff

   A thermal cutoff is an electrical safety device (either a thermal fuse or thermal switch) that interrupts electric current when heated to a specific temperature. These devices may be for one-time use (a thermal fuse), or may be reset manually or automatically (a thermal switch).

3. Disconnector - Wikipedia

   en.wikipedia.org/wiki/Disconnector

   Safety regulations of the utility must prevent any attempt to open the disconnector while it supplies a circuit. Standards in some countries for safety may require either local motor isolators or lockable handles (which can be padlocked). IEC standard 62271-102 defines the functionality and features of a disconnector.

4. High-voltage switchgear - Wikipedia

   en.wikipedia.org/wiki/High-voltage_switchgear

   800 kV high-voltage switchgear. High-voltage switchgear is any switchgear used to connect or disconnect a part of a high-voltage power system.This equipment is essential for the protection and safe operation, without interruption, of a high voltage power system, and is important because it is directly linked to the quality of the electricity supply.

5. Residual-current device - Wikipedia

   en.wikipedia.org/wiki/Residual-current_device

   A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device that interrupts an electrical circuit when the current passing through a conductor is not equal and opposite in both directions, therefore indicating leakage current to ground or current flowing to another powered conductor.

6. Power system protection - Wikipedia

   en.wikipedia.org/wiki/Power_system_protection

   Switchgear is a combination of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment. Switches are safe to open under normal load current (some switches are not safe to operate under normal or abnormal conditions), while protective devices are safe to open under fault current.

7. Category:Safety switches - Wikipedia

   en.wikipedia.org/wiki/Category:Safety_switches

   Pertains to electrical switches intended to protect the equipment or end users from harm during fault conditions or other hazardous situations. Subcategories This category has the following 2 subcategories, out of 2 total.

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   mail.aol.com

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9. Switch - Wikipedia

   en.wikipedia.org/wiki/Switch

   The disadvantages of the knife switch are the slow opening speed and the proximity of the operator to exposed live parts. Metal-enclosed safety disconnect switches are used for isolation of circuits in industrial power distribution. Sometimes spring-loaded auxiliary blades are fitted which momentarily carry the full current during opening, then ...