The disclosed concept relates generally to an apparatus and method of circuit protection, and in particular, to a universal circuit interrupter mounting assemblies for use in a load center.
Circuit interrupters, such as for example and without limitation, circuit breakers, are typically used to protect electrical circuitry from damage due to an overcurrent condition, such as an overload condition, a short circuit, or another fault condition, such as an arc fault or a ground fault. Molded case circuit breakers, for example, include at least one pair of separable contacts which may be operated either manually by way of a handle disposed on the outside of the case or automatically in response to an overcurrent condition. In the automatic mode of operation, an electronic trip unit, for example, controls an operating mechanism that opens the separable contacts. In the manual mode of operation, the handle cooperates with the operating mechanism in order to open the separable contacts. Circuit breakers have at least one line terminal for connection to a power source and at least one load terminal for connection to a load, such as a motor. The separable contacts of the circuit breakers are internally connected to the line and load terminals.
Circuit interrupters are mounted in cabinets or panelboards for residential or commercial markets. For example, molded circuit breakers have two different types of mounting mechanisms: a first type including, e.g., without limitation, CH, CHF, RO, CHQ types and a second type including, e.g., without limitation, QO, BTN types. These mounting mechanisms are then affixed to a load center or panelboard using circuit interrupter mounting assemblies specifically designed for each type of the mounting mechanisms of the circuit breakers. The technologies for circuit breaker mounting assemblies are continuously developing.
These needs, and others, are met by a load center structured to connect loads to a power source. The load center includes: a housing including a base and sidewalls extending laterally from the base; one or more circuit interrupters including at least one of a first circuit interrupter having a first type of mounting mechanism and a second circuit interrupter having a second type of mounting mechanism, each circuit interrupter having circuit interrupter line terminals; and a universal circuit interrupter mounting assembly structured to be attached to the base and including a mounting frame and line terminals extending longitudinally from one end of the mounting frame and structured to connect the circuit interrupter line terminals and the power source, the mounting frame including a first type mounting connector having a first protrusion and side edges thereof, the first mounting connector being structured to be coupled to the first type of mounting mechanism of the first circuit interrupter, the mounting frame further including a second type mounting connector having a second protrusion and transversely spaced-apart legs extending longitudinally therefrom and attached to the side edges of the first type mounting connector at one end, the second type mounting connector being structured to be coupled to the second type of mounting mechanism of the second circuit interrupter.
Another example embodiment includes a universal circuit interrupter mounting assembly structured to be attached to a base of a load center and mount one or more circuit interrupters on the base, each circuit interrupter having circuit interrupter line terminals and a first type of mounting mechanism or a second type of mounting mechanism. The universal circuit interrupter mounting assembly includes: a mounting frame including a first type mounting connector and a second type mounting connector, the first type mounting connector having a first protrusion and side edges thereof, the first mounting connector being structured to be coupled to the first type of mounting mechanism of a first circuit interrupter, the second type mounting connector having a second protrusion and transversely spaced-apart legs extending longitudinally therefrom and attached to the side edges of the first type mounting connector at one end, the second type mounting connector being structured to be coupled to the second type of mounting mechanism of a second circuit interrupter; and line terminals extending longitudinally from one end of the mounting frame and structured to connect the circuit interrupter line terminals and a power source.
Yet another example embodiment includes a method of providing circuit protection using one or more circuit interrupters disposed in a load center and connected between a power source and a load. The method includes attaching a universal circuit interrupter mounting assembly to a base of a load center, the universal circuit interrupter mounting assembly being structured to mount one or more circuit interrupters on the base, each circuit interrupter having circuit interrupter line terminals and a first type of mounting mechanism or a second type of mounting mechanism, the universal circuit interrupter mounting assembly comprising: (i) a mounting frame including a first type mounting connector and a second type mounting connector, the first type mounting connector having a first protrusion and side edges thereof, the first mounting connector being structured to be coupled to the first type of mounting mechanism of a first circuit interrupter, the second type mounting connector having a second protrusion and transversely spaced-apart legs extending longitudinally therefrom and attached to the side edges of the first type mounting connector at one end, the second type mounting connector being structured to be coupled to the second type of mounting mechanism of a second circuit interrupter; and (ii) line terminals extending longitudinally from one end of the mounting frame and structured to connect the circuit interrupter line terminals and the power source; mounting the one or more circuit interrupters in one or more poles of the universal circuit interrupter mounting assembly; and connecting the one or more circuit interrupters to the load and the power source via the circuit interrupter line connectors and the line terminals of the universal circuit interrupter mounting assembly.
A full understanding of the invention can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings in which:
Directional phrases used herein, such as, for example, left, right, front, back, top, bottom and derivatives thereof, relate to the orientation of the elements shown in the drawings and are not limiting upon the claims unless expressly recited therein.
As employed herein, the statement that two or more parts are “coupled” together shall mean that the parts are joined together either directly or joined through one or more intermediate parts.
The exemplary universal circuit interrupter mounting assembly 1000 prevents incurring such unnecessary additional costs and wastes by providing a mounting assembly 1000 capable of mounting at least the first type 110 and the second type 210 of mounting assemblies. As shown in
As shown in
Optionally, the first protrusion 1111a of the first type mounting connector 1111 may be structured to be removably received or fit (e.g., without limitation, snapped into) between the two longitudinally-spaced apart connectors 112 of the first type 110 of mounting mechanism of the first circuit interrupter 100, the two longitudinally-spaced apart connectors 112 extending outwardly and transversely. Optionally, the first protrusion 1111a may have curved surface so as to ease its insertion between the two longitudinally-spaced apart connectors 112. The second type mounting connectors 1112 may include a second protrusion 1112a and two transversely spaced-apart legs 1113 extending therefrom. The two transversely spaced-apart legs 1113 are attached to the side edges 1111b of the first protrusion 1111a of the first type mounting connectors 1111. The side edges 1111b may be flat. Optionally, the receptacle 212 of the second type 210 of mounting mechanism of the second circuit interrupter 200 may include a first receptacle portion (not shown) and a second receptacle portion (not shown). Optionally, the second flat protrusion 1112a may include a first flat portion 1114a and a second flat portion 1114b. The first flat portion 1114a may be structured to removably fit within the first receptacle portion of the receptacle 212 and the second flat portion 1114b may be structured to removably fit within the second receptacle portion of the receptacle 212 such that the second circuit interrupter 200 is securely and removably coupled to the universal circuit interrupter mounting assembly 1000.
Accordingly, by providing both a first type mounting connector 1111 structured to mount the first circuit interrupter 100 having the first type 110 of mounting mechanism and a second type mounting connector 1112 structured to mount the second circuit interrupter 200 having the second type 210 of mounting mechanism, the universal circuit interrupter mounting assembly 1100 allows users to freely select and use any type of circuit interrupters regardless of the specific types of the mounting mechanism that the selected circuit interrupters may have, thereby increasing efficiency and user convenience and reducing unnecessary costs incurred by using the conventional mounting assemblies that require specific load centers manufactured for specific types of mounting mechanism of the circuit interrupters in use. Further, by having the second type mounting connectors 1112 to extend from the side edges 1111b of the first type mounting connectors 1111, the universal circuit interrupter mounting assembly 1000 provides for mounting the circuit breakers having any type 110, 210 of mounting mechanism, utilizing the same amount or substantially same amount of space required to provide one conventional mounting assembly that is designed to mount only the circuit breakers having specified type 110,210 of mounting mechanism, thereby further saving manufacturing costs and panel space of the load center 10.
At 610, the universal circuit interrupter mounting assembly is attached to a base of a load center. The universal circuit interrupter mounting assembly is structured to mount one or more circuit interrupters on the base, each circuit interrupter having circuit interrupter line terminals and a first type of mounting mechanism or a second type of mounting mechanism. The universal circuit interrupter mounting assembly includes: (i) a mounting frame including a first type mounting connector and a second type mounting connector, the first type mounting connector having a first protrusion and side edges thereof, the first mounting connector being structured to be coupled to the first type of mounting mechanism of a first circuit interrupter, the second type mounting connector having a second protrusion and transversely spaced-apart legs extending longitudinally therefrom and attached to the side edges of the first type mounting connector at one end, the second type mounting connector being structured to be coupled to the second type of mounting mechanism of a second circuit interrupter; and (ii) line terminals extending longitudinally from one end of the mounting frame and structured to connect the circuit interrupter line terminals and the power source.
At 620, the one or more circuit interrupters is mounted in one or more poles of the universal circuit interrupter mounting assembly.
At 630, the one or more circuit interrupters are connected to the load and the power source via the circuit interrupter line connectors and the line terminals of the universal circuit interrupter mounting assembly.
While specific embodiments of the invention have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of disclosed concept which is to be given the full breadth of the claims appended and any and all equivalents thereof.