Electricity: circuit makers and breakers – Electric switch details – Contact
Patent
1979-04-11
1981-06-16
Little, Willis
Electricity: circuit makers and breakers
Electric switch details
Contact
200153G, 200288, H01H 360
Patent
active
042739799
ABSTRACT:
A low-voltage circuit breaker has a fixed contact and a movable contact which is attached to a pivoted contact carrier. Between the contact carrier and the movable contact, a contact pressure spring is arranged, which is designed as a coil compression spring. The contact carrier has an arm which extends to the vicinity of the contact-making end of the movable contact. The arm carries a setscrew which is positioned to act centrally with respect to a contact overlay of the movable contact. The setscrew limits the lifting of the movable contact or the contact overlay to the desired small extent, when a large current flows through the circuit breaker and exerts electrodynamic force on the movable contact.
REFERENCES:
patent: 3258572 (1966-06-01), Archer et al.
patent: 3366756 (1968-01-01), Watson
patent: 3525837 (1976-08-01), Leonard
patent: 3849751 (1974-11-01), Link et al.
Berndt Klaus-Gunther
Kruger Manfred
Nawrot Wolfgang
Little Willis
Siemens Aktiengesellschaft
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