Circuit breaker with parallel shorting element

Details Circuit breaker with parallel shorting element Circuit breaker with parallel shorting element

1978-05-26

1979-10-16

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fluorescent lamp-starting devices

337 27, H01H 6100

Patent

active

041715195

ABSTRACT:
A circuit breaker has a thermally sensitive bimetal connected across two lead-in wires in a glass envelope. An electrically conductive bypass element is in parallel with the bimetal and shorts it out. The bypass element can be removed from the circuit by melting it by means of a short duration pulse of high electric current. The bimetal contains means to prevent its ends from welding together should an arc occur when the bypass element is melted.

REFERENCES:
patent: 4052687 (1977-10-01), Kimball et al.

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