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 June 30, 2008 (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 7th day of August, 2008.