Thomas & Betts (TNB) 10-Q 2010 Q2 Quarterly report

Exhibit 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL 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, 2010 (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.

William E. Weaver, Jr., the Chief Financial 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/  William E. Weaver, Jr.

William E. Weaver, Jr.

Senior Vice President and Chief Financial Officer

Dated this 30th day of July, 2010.