Circuit breaker contacts condition indicator
AssigneeGeneral Electric Company
InventorRobert A. Morris
Life of this patent
Estimating the term…
Abstract
The open and closed conditions of the contacts within industrial-rated circuit breakers is externally ascertained by means of an auxiliary switch-contact position verifier accessory. A viewing aperture in the circuit breaker accessory cover provides visual access to a color-coded shutter that forms part of the auxiliary switch accessory and operates off the circuit breaker crossbar assembly. In the event that the circuit breaker contacts remain closed when the circuit breaker operating handle is moved to the OFF position, the colored indicia verifies the actual condition of the circuit breaker contacts.
Claims5
An auxiliary switch-contacts condition indicator accessory comprising:
- an enclosure comprising a case and a cover;
- a switch unit arranged within said enclosure and operated by means of a switch button;
- an actuator lever pivotally-mounted within said enclosure and arranged for contacting said switch button when said switch unit is inactuated and releasing said switch button when said switch is actuated;
- a paddle within said enclosure and connecting with said lever for movement to first and second positions in response to movement of said actuator lever, said cover being adapted for providing visual access to said paddle when moved to either said first or said second position;
- and
- an extension on said lever and a slot within said paddle, said extension being retained within said slot to move said paddle in unison with said lever.
Dependencies are inferred from the claim text.