Thomas & Betts (TNB) 10-Q 2011 Q3 Quarterly report

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

PURSUANT TORULE 13a-14(b) ORRULE 15d-14(b)

OF THE SECURITIES EXCHANGE ACT OF 1934 AND 18 U.S.C. §1350

The certification set forth below is being submitted in connection with theQuarterly Report onForm 10-Qfor the quarterly period ended September 30, 2011 (the “Report”) for the purpose of complying withRule 13a-14(b) orRule 15d-14(b) of the Securities Exchange Act of 1934 (the “Exchange Act”) and 18 U.S.C. § 1350.

Dominic J. Pileggi, the Chief Executive Officer of Thomas & Betts Corporation (the “Corporation”), certifies that, to the best of his knowledge:

1. the Report fully complies with the requirements of Section 13(a) or 15(d) of the Exchange Act; and

2. the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Corporation.

/s/  Dominic J. Pileggi

Dominic J. Pileggi

Chairman and Chief Executive Officer

Dated this 28th day of October, 2011.