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A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit.

Circuit Breaker

A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit…

A device that trips like a switch and opens the circuit when overloaded.

Circuit Breaker

A device that trips like a switch and opens the circuit when overloaded.

"British Grenadier of 1745, blowing his fuse to light a grenade." -Whitney, 1911

British Grenadier

"British Grenadier of 1745, blowing his fuse to light a grenade." -Whitney, 1911

A type of overcurrent protection device.

Fuse

A type of overcurrent protection device.

Fuse protection for voltmeter and ground detector on a direct-current switchboard. Fuse protection on instrument circuit of an alternating-current switch-board.

Fuse protection

Fuse protection for voltmeter and ground detector on a direct-current switchboard. Fuse protection on…

"Fuse protection on instrument circuit of an alternating-current switchboard." —Croft 1920

Fuse Protection on Alternating Current Switchboard

"Fuse protection on instrument circuit of an alternating-current switchboard." —Croft 1920

"Edison fuse plugs and casings for switchboard use." —Croft 1920

Casing and Fuse Plugs

"Edison fuse plugs and casings for switchboard use." —Croft 1920

"Illustrating fuse protection for voltmeter and ground detector and ground detector on a direct-current switchboard." —Croft 1920

Fuse Protection on Direct Current Swtichboard

"Illustrating fuse protection for voltmeter and ground detector and ground detector on a direct-current…

"Edison fuse plug cutout for switchboard use." —Croft 1920

Edison Fuse Plug Cut-Out

"Edison fuse plug cutout for switchboard use." —Croft 1920

A safety device that protects an electric circuit from becoming overloaded. Fuses contain a length of thin wire (usually of a metal alloy) that melts and breaks the circuit if too much current flows through it. They were traditionally used to protect electronic equipment and prevent fires, but have largely been replaced by circuit breakers.

Electric Fuse

A safety device that protects an electric circuit from becoming overloaded. Fuses contain a length of…

In heraldry, the griffin is a fabulous animal, with the head and forefeet of an eagle, and the body, hind legs, and tail of a lion. The head is represented with pricked ears, symbolical of its vigilance. In mythology, the griffin was a creature similar in form to the griffin of heraldry, which was supposed to find its especial function in watching over hidden treasure, especially in Scythia. It was dedicated to the sun-god Apollo, whose chariot appears in early art as drawn by griffins. It was a favorite ornamental 'theme' in ancient Babylonian and Persian art, and is also found in a similar way on art objects of the Phoenicians, the Mycenæan civilization, and the ancient Greeks. The Romans and art-workers of the renaissance used it as a purely decorative device.

Griffin

In heraldry, the griffin is a fabulous animal, with the head and forefeet of an eagle, and the body,…

A two pole front connected knife switch fused at the handle end.

knife switch

A two pole front connected knife switch fused at the handle end.

A three pole rear connected knife switch fused on the hinge end.

knife switch

A three pole rear connected knife switch fused on the hinge end.

Showing the construction of a quick break knife switch.

knife switch

Showing the construction of a quick break knife switch.

A snow melting machine is a type of snow removal machine employed to melt snow as a means of snow removal.

Snow Melting Machine

A snow melting machine is a type of snow removal machine employed to melt snow as a means of snow removal.