Terminal barriers for covering the lugs or terminals of electrical switching apparatus such as circuit breakers

• US 10,020,132 B1
• Filed: 05/24/2017
• Issued: 07/10/2018
• Est. Priority Date: 05/24/2017
• Status: Active Grant

• Current Assignee: Siemens Industry Incorporated (Siemens AG)
• Original Assignee: Siemens Industry Incorporated (Siemens AG)
• Inventors: Cortes Rico, Gustavo
• Primary Examiner(s): Paumen, Gary
• Application Number:
  US15/603,846
• Time in Patent Office: 412 Days
• Field of Search: 335202
• CPC Class Codes: H01H 71/02 Housings; Casings; Bases; Mountings
• CPC Class Codes: H01H 9/0264 Protective covers for terminals

Abstract

A terminal barrier for covering an electrical terminal of an electrical switching apparatus having a housing is provided. The terminal barrier comprises a flexible portion that is configured to flexibly bend away from a rest position after the terminal barrier is installed. The terminal barrier further comprises a wall portion configured to surround the electrical terminal to block any access to the electrical terminal from one or more sides except an access for installation of a service line wire in the electrical terminal. The terminal barrier further comprises a snap portion for snapping in place around the electrical terminal to removably attach the terminal barrier to the housing of the electrical switching apparatus.

Claims

1. A terminal barrier for covering an electrical terminal of an electrical switching apparatus having a housing, comprising:

a flexible portion that is configured to flexibly bend away from a rest position after the terminal barrier is installed;

a wall portion configured to surround the electrical terminal to block any access to the electrical terminal from one or more sides except an access for installation of a service line wire in the electrical terminal; and

a snap portion for snapping in place around the electrical terminal to removably attach the terminal barrier to the housing of the electrical switching apparatus, wherein the flexible portion is configured to flexibly move to open up an access space that allows installation of a service line wire in the electrical terminal.

2. The terminal barrier of claim 1, wherein the wall portion having one or more openings to allow a free flow of air.

3. The terminal barrier of claim 1, wherein the snap portion is configured to interface with the flexible portion and the wall portion to form a shield configured for shielding around the service line wire extendable from the electrical terminal such that a finger-sized probe is not able to touch any live parts when the terminal barrier is installed and the electrical terminal is energized.

4. The terminal barrier of claim 1, wherein the wall portion includes:

first and second flexible arms to allow access to a set screw.

5. The terminal barrier of claim 4, wherein the wall portion further includes:

a cover with one or more ventilators and a plurality of grip ribs.

6. The terminal barrier of claim 5, wherein the wall portion further includes:

a U-shaped hold feature to latch on the electrical terminal.

7. The terminal barrier of claim 1, wherein the wall portion further includes:

first and second walls that flex-in and flex-out to allow installation of a service line wire.

8. The terminal barrier of claim 7, wherein the wall portion further includes:

first and second grips to open the terminal barrier from its top to allow installation of the terminal barrier before or after the service line wire is in place.

9. The terminal barrier of claim 8, the snap portion further includes:

first and second snapping legs to latch on to a boss of the housing of the electrical switching apparatus.

10. A terminal barrier for covering an electrical terminal of an electrical switching apparatus, comprising:

a flexible portion that is configured to flexibly move to open up an access space that allows installation of a service line wire in the electrical terminal;

a wall portion coupled to the flexible portion, the wall portion having one or more openings to allow free flow of air,

wherein the wall portion is configured to surround the electrical terminal; and

a snap portion coupled to the wall portion, the snap portion configured to removably snap in place around the electrical terminal,

wherein the snap portion to interface with the flexible portion and the wall portion to form a shield configured for shielding around the service line wire extendable from the electrical terminal such that a finger-sized probe is not able to touch any live parts when the terminal barrier is installed and the electrical terminal is energized, wherein the wall portion includes first and second flexible aims to allow access to a set screw.

11. The terminal barrier of claim 10, wherein the wall portion further includes:

a cover with one or more ventilators and a plurality of grip ribs.

12. The terminal barrier of claim 11, wherein the wall portion further includes:

a U-shaped hold feature to latch on the electrical terminal.

13. The terminal barrier of claim 10, wherein the wall portion further includes:

first and second walls that flex-in and flex-out to allow installation of a service line wire.

14. The terminal barrier of claim 13, wherein the wall portion further includes:

first and second grips to open the terminal barrier from its top to allow installation of the terminal barrier before or after the service line wire is in place.

15. The terminal barrier of claim 14, the snap portion further includes:

first and second snapping legs to latch on to a boss of the housing of the electrical switching apparatus.

16. A method of covering an electrical terminal of an electrical switching apparatus having a housing with a line terminal barrier, the method comprising:

providing a flexible portion of the line terminal barrier that is configured to flexibly bend away from a rest position after the terminal barrier is installed;

providing a wall portion of the line terminal barrier configured to surround the electrical terminal to block any access to the electrical terminal from one or more sides except an access for installation of a service line wire in the electrical terminal; and

providing a snap portion of the line terminal barrier for snapping in place around the electrical terminal to removably attach the terminal barrier to the housing of the electrical switching apparatus, wherein the snap portion to interface with the flexible portion and the wall portion to form a shield configured for shielding around the service line wire extendable from the electrical terminal such that a finger-sized probe is not able to touch any live parts when the terminal barrier is installed and the electrical terminal is energized, wherein the flexible portion is configured to flexibly move to open up an access space that allows installation of a service line wire in the electrical terminal and wherein the wall portion having one or more openings to allow a free flow of air.

17. The method of claim 16, wherein the snap portion to interface with the flexible portion and the wall portion to form a shield configured for shielding around the service line wire extendable from the electrical terminal such that a finger-sized probe is not able to touch any live parts when the terminal barrier is installed and the electrical terminal is energized.