US 12,237,131 B2
Device for door and phase segregation in molded case circuit breakers
Oscar Taiocchi, Bergamo (IT); and Michele Ferrari, Bergamo (IT)
Assigned to ABB S.p.A., Milan (IT)
Filed by ABB S.p.A., Milan (IT)
Filed on Aug. 3, 2020, as Appl. No. 16/983,021.
Claims priority of application No. 19189753 (EP), filed on Aug. 2, 2019.
Prior Publication US 2021/0035762 A1, Feb. 4, 2021
Int. Cl. H01H 71/12 (2006.01); H01H 71/00 (2006.01); H01H 71/74 (2006.01); H01H 77/00 (2006.01)
CPC H01H 71/123 (2013.01) [H01H 71/74 (2013.01); H01H 77/00 (2013.01); H01H 2071/006 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A device for door and phase segregation in a molded case circuit breaker, the molded case circuit breaker having a plurality of phases each provided with a corresponding lug for an electrical connection to the molded case circuit breaker and a venting aperture for venting off gases, the device comprising:
a conductive element adapted to be removably attached to the corresponding lug of the molded case circuit breaker, wherein the conductive element includes an electrical connection mechanism for the electrical connection to the molded case circuit breaker, and wherein the conductive element is substantially L-shaped, the conductive element having a first side and a second side substantially L-shaped;
a first insulating element comprising a first lateral surface, a second lateral surface, and a top surface connecting the first lateral surface and the second lateral surface, the first lateral surface, the second lateral surface, and the top surface defining a cavity, the first insulating element receiving the conductive element in the cavity and covering the conductive element by the first lateral surface, the second lateral surface, and the top surface, wherein the first insulating element comprises a first insulating body substantially L-shaped that is fitted onto the conductive element and matches a shape of the conductive element, and the first lateral surface and the second lateral surface substantially continuous and substantially L-shaped, the first lateral surface and the second lateral surface covering the first side and the second side of the conductive element and matching shapes of the first side and the second side, the top surface provided with an opening for accessing the electrical connection mechanism of the conductive element; and
a second insulating element adapted to be interposed between two adjacent phases of the molded case circuit breaker, wherein the second insulating element comprises a fin extending between the two adjacent phases of the molded case circuit breaker, and wherein the fin includes a third lateral protrusion and a fourth lateral protrusion that extend substantially perpendicularly from a third surface and a fourth surface, respectively, of the fin.