Molded case circuit breaker with contact status indicating handl

Details Molded case circuit breaker with contact status indicating handl Molded case circuit breaker with contact status indicating handl

1987-06-11

1989-01-03

Pellinen, A. D.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

74526, 200309, 361363, 361376, H02B 108

Patent

active

047961546

ABSTRACT:
An integrated electronic trip molded case circuit breaker includes a trip unit circuit arranged on a printed wire board contained within the breaker enclosure along with at least one circuit breaker auxiliary accessory. The condition of the integrated circuit breaker contacts is visually ascertained by a color-coded operating handle skirt subjacent indicating windows on the cover of the circuit breaker enclosure. To deter the egress of ionized gas during overload current conditions through the circuit breaker, the handle skirt seals the operating handle opening from the external environment. A groove formed within the external portion of the operating handle cooperates with an edge surface of the enclosure cover to allow the operating handle to rotate between its fully "OFF" and "ON" positions.

REFERENCES:
patent: 2096547 (1937-09-01), Jackson
patent: 3596218 (1971-07-01), Layton
patent: 4527027 (1985-07-01), Link et al.
patent: 4589052 (1986-05-01), Dougherty
patent: 4644122 (1987-02-01), Farley et al.

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