Cooper Industries DEFA14A Additional proxy soliciting materials

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No.  )

Filed by the Registrantþ
Filed by a Party other than the Registranto

Check the appropriate box:

o Preliminary Proxy Statement

o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o Definitive Proxy Statement

þ Definitive Additional Materials

o Soliciting Material Pursuant to §240.14a-12

Cooper Industries PLC

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

þ No fee required.

o Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1)	Title of each class of securities to which transaction applies:
(2)	Aggregate number of securities to which transaction applies:
(3)	Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
(4)	Proposed maximum aggregate value of transaction:
(5)	Total fee paid:

o Fee paid previously with preliminary materials.

o Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

(1)	Amount Previously Paid:
(2)	Form, Schedule or Registration Statement No.:
(3)	Filing Party:
(4)	Date Filed:

*** Exercise YourRightto Vote ***

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE
SHAREHOLDER MEETING TO BE HELD ON MAY 2, 2011.

COOPER INDUSTRIES PLC

COOPER INDUSTRIES PLC
600 TRAVIS, SUITE 5600
ATTN: CORPORATE SECRETARY
HOUSTON, TX 77002

Meeting Information

Meeting Type:        Annual Meeting

For holders as of:  March 4, 2011

Date:  May 2, 2011  Time:  11:30 a.m. Local Time

Location: The Merrion Hotel
22-24 Upper Merrion Street
Dublin, Ireland

You are receiving this communication because you hold shares in the above named company.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —

How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

Notice and Proxy Statement        Annual Report including 10-K        Irish Statutory Accounts

How to View Online:

Have the information that is printed in the box marked by the arrowè  XXXX XXXX XXXX (located on the following page) and visit:www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

1)BY INTERNET:	www.proxyvote.com
2)BY TELEPHONE:	1-800-579-1639
3)BY E-MAIL*:	sendmaterial@proxyvote.com

* If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrowè  XXXX XXXX XXXX (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 18, 2011 to facilitate timely delivery.

— How To Vote —

Please Choose One of the Following Voting Methods

Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.

Vote By Internet:To vote now by Internet, go towww.proxyvote.com.Have the information that is printed in the box marked by the arrowè  XXXX XXXX XXXX available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting Items
The Board of Directors recommends you vote FOR each of the Director Nominees and FOR items 2, 3, 4 and 5:
1.	Election of Directors
	Nominees:
	1a.   Linda A. Hill 1b.   James J. Postl 1c.   Mark S. Thompson
2.	To receive and consider the Company’s Irish Statutory Accounts and the related reports of the directors and auditors;
3.	Appoint Ernst & Young LLP as our independent auditors for the year ending 12/31/2011;
4.	To approve the 2011 Omnibus Incentive Compensation Plan;
5.	To approve on an advisory basis the compensation of the Company’s named executive officers;
The Board of Directors recommends you vote 3 years on the following proposal:
6.	To recommend on an advisory basis the frequency of the advisory vote on executive compensation;
The Board of Directors recommends you vote FOR the following proposals:
7.	To authorize any subsidiary of the Company to make market purchases of Company shares; and
8.	To authorize the reissue price range of treasury shares.