US 12,087,526 B2
Medium voltage circuit breaker switching pole
Dietmar Gentsch, Ratingen (DE); and Christian Reuber, Willich (DE)
Assigned to ABB Schweiz AG, Baden (CH)
Filed by ABB Schweiz AG, Baden (CH)
Filed on Dec. 20, 2021, as Appl. No. 17/556,190.
Application 17/556,190 is a continuation of application No. PCT/EP2020/066054, filed on Jun. 10, 2020.
Claims priority of application No. 19181805 (EP), filed on Jun. 21, 2019.
Prior Publication US 2022/0115196 A1, Apr. 14, 2022
Int. Cl. H01H 3/40 (2006.01); H01H 33/664 (2006.01); H01H 33/666 (2006.01)
CPC H01H 33/666 (2013.01) [H01H 3/40 (2013.01); H01H 33/664 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A medium voltage circuit breaker switching pole, comprising:
a fixed contact of a vacuum interrupter;
a movable contact of the vacuum interrupter; and
a threaded drive element,
wherein:
the movable contact is configured to move along a longitudinal axis of the vacuum interrupter,
a center axis of the threaded drive element is parallel to the longitudinal axis of the vacuum interrupter,
when in an open configuration the fixed contact and the movable contact are separated from one another,
when in a closed configuration the fixed contact and the movable contact are in contact with one another,
the switching pole further comprises a threaded pushrod connected to the movable contact,
a thread of the threaded pushrod is configured to engage with a thread of the threaded drive element,
rotations of the threaded drive element are configured to move the threaded pushrod along the center axis of the threaded drive element, and wherein the threaded pushrod is configured not to rotate as the threaded drive element rotates,
an outer surface of the threaded pushrod comprises a groove extending in an axial direction of the threaded pushrod,
the groove is configured to engage with a fixed pin such that axial movement of the threaded pushrod leads to the fixed pin moving within the groove,
rotation of the threaded drive element about the center axis of the threaded drive element in a first direction is configured to transition the switching pole from the open configuration to the closed configuration, and
rotation of the threaded drive element about the center axis in a second direction counter to the first direction is configured to transition the switching pole from the closed configuration to the open configuration.