Three-phase load center
AssigneeSiemens Energy & Automation, Inc.
InventorsGregory P. Barner, Drew S. Hancock
Life of this patent
Estimating the term…
Abstract
A three-phase load center which has a base pan including a first and a second bus bar for a first and a second phase. The bus bars are positioned on the top surface of the base pan. A third bar for a third phase is positioned beneath the base pan such that the bus bar is in contact with the bottom surface of the base pan. An insulator is connected to the base pan such that the third bus bar lies between the base pan and the insulator. The base pan and the third bus bar are each provided with ribs and grooves. These ribs and grooves cooperate to form ventilation passageways.
Claims10
A three-phase load center comprising:
- an insulative base pan defining a top surface, a bottom surface, a slot, a first opening and a second opening, the top surface having a first and a second channel formed therein and the bottom surface having a first rib and a second rib formed thereon between the channels;
- a first bus bar having an integrally formed upstanding stab and an opening, the first bus bar being positioned above the first channel, wherein the opening is aligned with the first opening;
- a second bus bar having an integrally formed upstanding stab and an opening, the second bus bar being positioned above the second channel, wherein the second bus bar opening is aligned with the second opening, the second bus bar being electrically isolated from the first bus bar;
- a third bus bar having a periphery and an integrally formed upstanding stab, the third bus bar being positioned beneath the base pan in contact with the ribs on the bottom surface of the base pan with the stab extending through the slot;
- an insulator having a first opening and a second opening, the insulator being positioned such that the first opening is aligned with the first base pan opening and the second opening is aligned with the second base pan opening, wherein the insulator is positioned in contact with the third bus bar and extending beyond the periphery of the third bus bar;
- and
- means for fastening the bus bars and the insulator to the insulative base pan.
Dependencies are inferred from the claim text.