Thermal circuit breaker

Details Thermal circuit breaker Thermal circuit breaker

1987-04-20

1989-02-21

Broome, H.

Electricity: electrothermally or thermally actuated switches

Thermally actuated switches

With bimetallic element

337 70, 337 99, H01H 3710, H01H 3752

Patent

active

048068993

ABSTRACT:
An improved thermal circuit breaker is disclosed, featuring a U-shaped bimetallic element which latches an escapement locking arm which holds a spring biased moving contact against a fixed contact when the breaker is in the contacts closed position. The improved thermal element has terminal portions which are of lesser electrical resistivity than are other portions of the element. The relative orientation of the metals of the bimetallic element in the terminal portions are reversed with respect to their orientation in the remainder of the bimetallic element. In this way ambient temperature compensation is provided to the breaker such that the current rating of a given breaker does not vary with variation in ambient temperature.

REFERENCES:
patent: 2150013 (1939-03-01), Von Hoorn
patent: 2223673 (1940-12-01), Catron et al.
patent: 2416266 (1947-02-01), Landmeier
patent: 2504513 (1950-04-01), Fleming
patent: 2703662 (1955-03-01), Meyer
patent: 3171929 (1965-03-01), Jencks et al.
patent: 3238779 (1966-03-01), Wolfe
patent: 3238780 (1966-03-01), Doyle
patent: 3453408 (1969-07-01), Mune
patent: 3500275 (1970-03-01), Oravec
patent: 3950066 (1976-04-01), Bienwald
patent: 4326183 (1982-04-01), Tharp
patent: 4338586 (1982-07-01), Scanlon
patent: 4510479 (1985-04-01), Merchant

Affiliated with

Also associated with

Rating

Thermal circuit breaker does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thermal circuit breaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal circuit breaker will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1525345