Circuit breakers including short wired pigtail, base pans, installation methods and assemblies thereof

Patent metadata

Field	Value
Publication number	US-9627164-B2
Application number	US-201514747227-A
Country	US
Kind code	B2
Filing date	Jun 23, 2015
Priority date	Apr 23, 2015
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

A circuit breaker including a housing and a short wired pigtail exiting the housing. The short wired pigtail has a factory length from a point of exit from the housing to a terminal end of less than about 16 cm, and can include pre-configured bends, and may be pre-stripped. In another aspect, a base pan for mounting a circuit breaker is provided. Base pan includes a plurality of busses, and an insulating base portion receiving the busses, the base pan configured to receive a circuit breaker thereon, the insulating base portion including a pigtail guide channel configured to direct a short wired pigtail towards a neutral bar socket as the circuit breaker is mounted to the insulating base portion. Circuit breakers, base pan assemblies, and methods of installing circuit breakers are provided, as are other aspects.

First claim

What is claimed is:

1. A circuit breaker, comprising:
a housing; and
a short wired pigtail exiting the housing, the short wired pigtail having a factory length from a point to exit from the housing to a terminal end of less than about 16 cm,
wherein the housing includes a connection feature formed on the circuit breaker to interface with a complementary feature formed on a base pan having a insulating base portion,
wherein the insulating base portion including a pigtail guide channel configured to direct the short wired pigtail towards a neutral bar socket as the circuit breaker is mounted to the insulating base portion,
wherein the insulating base portion may be formed laterally in line with the complementary feature,
wherein the complementary feature is configured and adapted to receive the connection feature to position and lock the circuit breaker on the base pan, and
wherein mounting is accomplished by engaging the connection feature to the complementary feature at an angle and then rocking the circuit breaker clockwise onto a stab to insert the short wired pigtail into the neutral bar socket.

2. The circuit breaker of claim 1 , wherein the factory length of is between about 5 cm and about 16 cm.

3. The circuit breaker of claim 1 , wherein the short wired pigtail is pre-stripped from the factory.

4. The circuit breaker of claim 1 , wherein the short wired pigtail includes an L-bend from the factory.

5. The circuit breaker of claim 4 , wherein the L-bend is between about 60° to about 120°.

6. The circuit breaker of claim 1 , comprising a starting bend towards a top of the circuit breaker as the short wired pigtail exits the housing.

7. The circuit breaker of claim 1 , wherein the short wired pigtail comprises a first segment having a first length of between about 3 cm and about 10 cm, an L-bend, and a second segment having a second length between about 3 cm and about 10 cm.

8. A circuit breaker and base pan assembly, comprising:
a circuit breaker including:
a housing includes a connection feature formed on the circuit breaker, and
a short wired pigtail exiting the housing, the short wired pigtail having a factory length from a point of exit from the housing to a terminal end of less than about 16 cm; and

a base pan includes a complementary feature formed on the base pan to interface with the connection feature, including:
a plurality of busses,
a neutral bar including a neutral bar socket, and
an insulating base portion receiving the busses, the base pan configured to receive the circuit breaker, the insulating base portion including a pigtail guide channel adapted to direct the short wired pigtail towards a neutral bar socket as the circuit breaker is mounted to the insulating base portion,

wherein the complementary feature is configured and adapted to receive the connection feature to position and lock the circuit breaker on the base pan, and
wherein mounting is accomplished by engaging the connection feature to the complementary feature at an angle and then rocking the circuit breaker clockwise onto a stab to insert the short wired pigtail into the neutral bar socket.

9. The circuit breaker and base pan assembly of claim 8 , wherein the pigtail guide channel is formed laterally in line with a stab formed on one of the busses.

10. The circuit breaker and base pan assembly of claim 8 , wherein the pigtail guide channel is formed laterally in line with a hook formed in the insulating base portion, the hook adapted to receive a tab of the circuit breaker.

11. The circuit breaker and base pan assembly of claim 8 , wherein the pigtail guide channel includes a first wider portion and a second narrower portion closer to the neutral bar.

12. The circuit breaker and base pan assembly of claim 8 , wherein the pigtail guide channel includes a wider top portion and a narrower bottom portion closer to a bottom of the insulating base portion.

13. The circuit breaker and base pan assembly of claim 12 , wherein a bottom of the narrower bottom portion is laterally aligned with a bottom of the neutral bar socket.

14. The circuit breaker and base pan assembly of claim 8 , wherein the pigtail guide channel includes a lateral length of between about 1.5 cm and about 2.5 cm.

15. The circuit breaker and base pan assembly of claim 8 , wherein the insulating base portion includes the neutral bar mounted thereto.

16. The circuit breaker and base pan assembly of claim 15 , wherein the pigtail guide channel is laterally aligned with the neutral bar socket of the neutral bar.

17. The circuit breaker and base pan assembly of claim 15 , comprising a plurality of pigtail guide channels each being laterally aligned with the neutral bar socket of the neutral bar.

18. The circuit breaker and base pan assembly of claim 8 , wherein the pigtail guide channel includes a channel width measured perpendicular to a lateral length and between opposing sides of the pigtail guide channel, and at a narrowest portion of the pigtail guide channel, of less than about 0.5 cm.

19. A method of installing a circuit breaker, comprising:
providing a base pan including a plurality of busses, a neutral bar including a neutral bar socket, and an insulating base portion, the base pan configured to receive the circuit breaker, the insulating base portion including a pigtail guide channel;
providing a circuit breaker including a housing, and a short wired pigtail exiting the housing, the short wired pigtail having a factory length from a point of exit from the housing to a terminal end of less than about 16 cm; and
directing the short wired pigtail towards the neutral bar socket within the pigtail guide channel as the circuit breaker is mounted to the insulating base portion,
wherein the housing includes a connection feature formed on the circuit breaker,
wherein the base pan includes a complementary feature formed on the base pan to interface with the connection feature,
wherein the complementary feature is configured and adapted to receive the connection feature to position and lock the circuit breaker on the base pan, and
wherein mounting is accomplished by engaging the connection feature to the complementary feature at an angle and then rocking the circuit breaker clockwise onto a stab to insert the short wired pigtail into the neutral bar socket.

Assignees

• Siemens Industry Inc

Inventors

• Robinson Kristopher Scott
• Rusch Brian J

Classifications

• H01H71/1009

  Interconnected mechanisms (H01H71/1045 takes precedence; operated by excess current and other electrical conditions H01H83/20) · CPC title

• H01H71/002

  with provision for switching the neutral conductor · CPC title

• H01H71/082 Primary

  Connections between juxtaposed circuit breakers · CPC title

• H01H19/58

  having only axial contact pressure, e.g. disc switch, wafer switch · CPC title

• H01H71/08

  Terminals; Connections · CPC title