General Electric Type P Overload Relay, 1910-1920
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As the electrical industry expanded, companies created equipment to protect valuable infrastructure used to generate and transmit electricity. Engineers developed relays to protect against service interruptions and keep equipment safe from abnormal current loads. These unassuming devices control the path of electricity, directing it to different circuit paths when needed.
As the electrical industry expanded, companies created equipment to protect valuable infrastructure used to generate and transmit electricity. Engineers developed relays to protect against service interruptions and keep equipment safe from abnormal current loads. These unassuming devices control the path of electricity, directing it to different circuit paths when needed.
Artifact
Relay
Date Made
1910-1920
Location
Not on exhibit to the public.
Object ID
72.131.3
Credit
From the Collections of The Henry Ford.
Material
Metal
Color
Black (Color)
Gold (Color)
Dimensions
Height: 14.5 in
Width: 7.5 in
Length: 5 in
Inscriptions
on plate: DEFINITE TIME LIMIT/ OVERLOAD RELAY/ NO. 186532 DL184569/ TYPE P FORM G30/ AMP. 5 VOLTS [blank]/ W.S.F. 91031 POLES 2/ PAT. AUG. 8, 1905 JULY 23, 1907 JULY 12, 1910/ GENERAL ELECTRIC CO., U.S.A./ N.P. 10983
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