TH40096A - A low-voltage, high-electrodynamic multipole automatic disconnect switch where the terminal shafts are mounted within the terminal housing. - Google Patents

Abstract

The DC60 (29/07/42) low-voltage multipole automatic disconnect switch (UTC) with high electrodynamic power consists of an insulating housing subdivided into a front chamber 12, which encloses the operating mechanism 24 that triggers the opening and closing of the TCC, and a rear chamber 14, separated from the front chamber by a central wall 20. The rear chamber 14 is itself subdivided into individual chambers 36 by separating walls 38. Each individual chamber 36 encloses one terminal of the TCC's 56 terminals. The operating mechanism 24 is connected to a common terminal shaft 78 shared with terminal 56. This shaft 78 is mounted in the rear chamber 14 and supported by a shaft bearing that passes through the separating wall. The low-voltage, multi-pole automatic circuit breaker (MPB) 10 with high electrodynamic power consists of an insulating housing subdivided into a front chamber 12, which encloses the operating mechanism 24 that triggers the opening and closing of the MPB, and a rear chamber 14, separated from the front chamber by a central wall 20. The rear chamber 14 is itself subdivided into individual chambers 36 by separating walls 38. Each individual chamber 36 encloses one terminal of the MPB 56. The operating mechanism 24 is connected to a common terminal shaft 78 shared with terminal 56. This terminal shaft 78 is mounted in the rear chamber 14 and supported by a shaft bearing that passes through the separating wall.

Claims (6)

1. A low-voltage (10) automatic circuit breaker with high electrodynamic power is housed in an insulating material and contains an operating mechanism (24) connected to a terminal shaft (78) supported by a shaft bearing securely attached to the housing. Numerous terminals (56) each contain at least one pair of separable contacts (60, 61). At least one of each pair of contacts, called the movable contact (61), is mechanically connected to the terminal shaft (78). The terminal shaft (78), the operating mechanism (24), and the movable contact (61) are capable of moving between the open position corresponding to the separation of each pair of contacts (60, 61) and the closed position corresponding to the contact of each pair of contacts (60,61). In the case of this automatic circuit breaker, It will consist of a front chamber (12) enclosing the operating mechanism (24) and a rear chamber (14) separated from the front chamber (12) by a central wall (20) and subdivided into individual chambers (36) by a separating partition (38). Each individual chamber (36) will enclosing one terminal of the terminal (56) of the automatic circuit breaker (10) whose characteristic is that the rotating shaft (79) of the terminal shaft (78) is mounted in the rear chamber (14). 2. The automatic circuit breaker in accordance with clause 1 has the characteristic that each such separating wall (38) shall support one of the such shaft bearings and that of the pole shaft (78) shall pass through each such separating wall (38) at the level of one of the such shaft bearings. 3. The automatic circuit breaker according to clause 2 has the characteristic that each such separating bulkhead (38) shall consist of a bulkhead section (52) which is cast with a central wall (20) in one edge which is made up of a semicylindrical section (54) which forms part of the corresponding shaft coupling. 4. An automatic circuit breaker under any of the above claims shall have the characteristic that the middle wall (20) shall contain a hole (34) for the passage of the mechanical connection (82) between the terminal shaft (78) and the operating mechanism (24). 5. An automatic circuit breaker under any of the above claims has the characteristic that the outer surface of the terminal shaft (78) is made of an electrically insulating material, specifically thermosetting polyester plastic. 6. An automatic circuit breaker pursuant to one of the preceding claims shall be characterized in which it shall consist of at least one connecting rod (80) between the terminal axis (78) and each movable contact (61). This rod (80) shall be connected to the terminal axis (78) by the pivot (81) in such a way that a definite relative position of the terminal axis (78) and rod (80) shall be established, called the assembly position. This rod (80) shall be able to move freely in a direction parallel to the axis of the pivot (81), and when rod (80) has been tightened and moved from its tightened position, a definite connection shall be established to achieve protection against horizontal movement of rod (80) in a direction parallel to the axis of the pivot (81). This assembly position shall remain until, in the operating state, the terminal axis (78) and rod (80) shall never be in this position.