Switch assembly for disconnect operator

Patent metadata

Field	Value
Publication number	US-9390868-B2
Application number	US-201313837100-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Mar 15, 2013
Publication date	Jul 12, 2016
Grant date	Jul 12, 2016

Abstract

A sealed switch assembly for use with a disconnect operator movable between an on state, a tripped state, and an off state. The disconnect operator housed within a sealed enclosure. The switch assembly includes a housing sealed to the enclosure to inhibit ingress of solids and liquids therebetween. A handle is coupled to the disconnect operator and is disposed at least partially within the housing. The handle is sealed to the housing to inhibit ingress of solids and liquids therebetween, and is moveable between an on position and an off position. A low-friction trip indicator mechanism operates independent of the handle to indicate when the disconnect operator is in the tripped state.

First claim

I claim:

1. A sealed switch assembly for use with a disconnect operator movable between an on state, a tripped state, and an off state, the disconnect operator housed within a sealed enclosure, the switch assembly comprising:
a housing sealed to the enclosure to inhibit ingress of solids and liquids therebetween, the housing including tagout apertures;
a handle coupled to the disconnect operator and disposed at least partially within the housing, the handle sealed to the housing to inhibit ingress of solids and liquids therebetween, the handle moveable between an on position and an off position, wherein the handle does not move when the disconnect operator switches from the on state to the tripped state, the handle including tagout channels positioned to cooperate with the tagout apertures of the housing when the handle is in the off position; and
a low-friction trip indicator mechanism that operates independent of the handle to indicate when the disconnect operator is in the tripped state.

2. The switch assembly of claim 1 , wherein the switch assembly further comprises a base seal and a handle seal that cooperate to provide environmental protection by preventing the ingress of solids and liquids to meet a UL50 type 4/IP67/IP69K standard.

3. The switch assembly of claim 1 , wherein the housing is sealed to the enclosure with an o-ring.

4. The switch assembly of claim 1 , wherein the handle rotates between the on position and the off position.

5. The switch assembly of claim 1 , wherein the handle is sealed to the housing with an o-ring.

6. The switch assembly of claim 1 , wherein the low-friction trip indicator mechanism includes a flag coupled to the disconnect operator and that moves in response to the disconnect operator switching between the on state and the tripped state.

7. The switch assembly of claim 6 , wherein the the handle further includes a window, the flag of the low-friction trip indicator mechanism is only visible through the window when the disconnect operator is in the tripped state.

8. The switch assembly of claim 1 , wherein the handle is operable to actuate the disconnect operator to the off state and the on state.

9. The switch assembly of claim 1 , wherein the disconnect operator includes a switch that rotates about forty-five degrees when the disconnect operator actuates between the on state and the off state, and
wherein the low-friction trip indicator mechanism is operable to indicate that the switch has rotated.

10. A sealed switch assembly for use with a disconnect operator movable between an on state, a tripped state, and an off state, the disconnect operator housed within a sealed enclosure, the switch assembly comprising:
a handle coupled to the disconnect operator and movable between an on position and an off position, the handle defining lockout tagout channels to permit lockout tagout of the handle in the off position;
a lockout tagout housing that includes lockout tagout apertures positioned to cooperate with the lockout tagout channels of the handle when the handle is in the off position;
an indicator that indicates when the disconnect operator is in the tripped state; and
a latching mechanism coupled between the handle and the disconnect operator such that when the disconnect operator actuates from the on state to the tripped state, the handle does not move.

11. The switch assembly of claim 10 , wherein the latching mechanism is coupled such that when the disconnect operator is in the tripped state, the handle must be moved to the off position before the disconnect operator can be actuated to the on state.

12. The switch assembly of claim 10 , wherein the indicator includes a flag and the handle includes a window through which the flag is only visible when the disconnect operator is in the tripped state.

13. The switch assembly of claim 10 , wherein the latching mechanism interacts with the indicator.

14. The switch assembly of claim 10 , further comprising an o-ring positioned between the lockout tagout housing and the enclosure to inhibit ingress of environmental elements and an o-ring positioned between the lockout tagout housing and the handle to inhibit ingress of environmental elements.

15. The switch assembly of claim 10 , wherein the indicator is actuated by the disconnect operator without assistance.

16. The switch assembly of claim 10 , wherein the disconnect operator includes a switch that rotates about forty-five degrees when the disconnect operator actuates between the on state and the off state, and
wherein the indicator is operable to indicate that the switch has rotated.

17. The switch assembly of claim 10 , wherein the switch assembly further comprises a base seal and a handle seal that cooperate to provide environmental protection by preventing the ingress of solids and liquids to meet a UL50 type 4/IP67/IP69K standard.

Assignees

• Clark John Stephen
• Rockwell Automation Tech Inc

Inventors

• Clark John Stephen

Classifications

• H01H9/22

  for interlocking between casing, cover, or protective shutter and mechanism for operating contacts {(explosion-proof cases H01H9/045; built-in fuses and interlocking mechanisms H01H9/104; by automatic release of circuit breakers H01H71/126)} · CPC title

• H01H9/04 Primary

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings · CPC title

• H01H71/04

  Means for indicating condition of the switching device {(by means of an auxiliary contact H01H71/46)} · CPC title

• H01H71/56

  actuated by rotatable knob or wheel · CPC title