Terminal barrier assemblies for electrical switching apparatus and methods of assembly thereof

Patent metadata

Field	Value
Publication number	US-9928974-B1
Application number	US-201615267377-A
Country	US
Kind code	B1
Filing date	Sep 16, 2016
Priority date	Sep 16, 2016
Publication date	Mar 27, 2018
Grant date	Mar 27, 2018

Abstract

A terminal barrier assembly for one or more terminals of an electrical switching apparatus, such as an electrical circuit breaker or switch. The terminal barrier includes a first barrier portion including a first opening portion, and a second barrier portion including a second opening portion. The first opening portion and second opening portion interface with one another to form a shielding aperture configured for shielding around one or more line wires extending from the one or more terminals. According to another aspect, an electrical switching apparatus including the terminal barrier assembly and methods of assembly of an electrical switching apparatus are provided, as are other aspects.

First claim

What is claimed is:

1. A terminal barrier assembly for one or more electrical terminals of an electrical switching apparatus, comprising:
a first barrier portion including a first opening portion and first slide-in retention members configured and adapted to slide into first housing retention features formed on a base portion of a molded case housing of the electrical switching apparatus, and
a second barrier portion including a second opening portion, wherein the first opening portion and second opening portion interface with one another to form a shielding aperture configured for shielding around one or more line wires extendable from the one or more electrical terminals.

2. The terminal barrier assembly of claim 1 , wherein the second barrier portion includes second slide-in retention members configured and adapted to slide into second housing retention features formed on a top portion of a molded case housing of the electrical switching apparatus.

3. The terminal barrier assembly of claim 1 , comprising one or more first snap-connect features provided on the first barrier portion and one or more second snap-connect features provided on the second barrier portion and configured to be snapped together to secure together the first barrier portion and the second barrier portion.

4. The terminal barrier assembly of claim 3 , wherein the one or more first snap-connect features comprise flexible beams extending from a body of the first barrier portion.

5. The terminal barrier assembly of claim 3 , wherein the one or more second snap-connect features comprise recesses formed in a body of the second barrier portion.

6. The terminal barrier assembly of claim 3 , wherein the first barrier portion and the second barrier portion include lateral registration features configured to laterally locate the second barrier portion to the first barrier portion.

7. The terminal barrier assembly of claim 1 , wherein the second opening portion of the second barrier portion comprises flexible fingers.

8. The terminal barrier assembly of claim 7 , wherein the flexible fingers extend inwardly towards a common point.

9. The terminal barrier assembly of claim 8 , wherein the flexible fingers include a taper along a length thereof.

10. The terminal barrier assembly of claim 8 , wherein a number of the flexible fingers associated with the shielding aperture is between 3 and 20.

11. The terminal barrier assembly of claim 1 , coupled to an end of a molded case housing of the electrical switching apparatus.

12. The terminal barrier assembly of claim 1 , comprising two or more shielding apertures configured for shielding around two or more line wires.

13. An electrical switching apparatus, comprising:
a molded case housing including a first end and a second end;
one or more electrical terminals located at the first end; and
a terminal barrier assembly coupled to the first end, comprising:
a first barrier portion including a first opening portion, and
a second barrier portion including a second opening portion, wherein the first opening portion and second opening portion interface with one another to form a shielding aperture configured for shielding around a wire coupleable to an electrical terminal of the one or more electrical terminals.

14. The switching apparatus of claim 13 , wherein the first barrier portion and the second barrier portion each include slide-in retention members received into housing retention features formed in the molded case housing.

15. The switching apparatus of claim 13 , wherein the second barrier portion is removable from the molded case housing.

16. The switching apparatus of claim 13 , wherein the one or more terminals located at the first end comprise line terminals each configured to receive a line wire therein.

17. The switching apparatus of claim 13 , wherein the second barrier portion comprises flexible fingers configured to accommodate different sized line wires.

18. The switching apparatus of claim 13 , wherein the second end is coupled to a base panel of an electrical load center assembly.

19. A method of assembling an electrical switching apparatus, comprising:
providing a molded case housing of the electrical switching apparatus including an end receiving one or more electrical terminals; and
coupling a terminal barrier assembly to the end, the terminal barrier assembly including a first barrier portion including a first opening portion, and a second barrier portion including a second opening portion, wherein the first opening portion and second opening portion interface with one another to form a shielding aperture configured for shielding around a wire extendable from the one or more electrical terminals.

Assignees

• Siemens Industry Inc

Inventors

• Zhang Fan
• Rusch Brian J
• Harnois Carey D

Classifications

• H01H9/0264 Primary

  Protective covers for terminals · CPC title

• H01H11/0031

  for allowing different types or orientation of connections to contacts · CPC title

• H01H9/02

  Bases, casings, or covers (accommodating more than one switch or a switch and another electrical component H02B1/26) · CPC title

• H01R13/70

  with built-in switch · CPC title

• H01R13/6593

  the shield being composed of different pieces · CPC title