Exhibit 24 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Clyde R. Moore, Jerry Kronenberg and Fred R. Jones, and each of them, his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, to sign the Annual Report on Form 10-K of Thomas & Betts Corporation for its fiscal year 1999, and any and all amendments and exhibits thereto, and to file the same and any other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents full power and authority to do and perform each and every act necessary to be done as fully to all intents and purposes as he or she could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their substitutes, may lawfully do or cause to be done by virtue hereof. SIGNATURE TITLE DATE --------- ----- ---- /s/ Clyde R. Moore President and Chief March 20, 2000 - ---------------------------- Executive Officer and Clyde R. Moore Director /s/ Ernest H. Drew Director March 21, 2000 - ---------------------------- Ernest H. Drew /s/ T. Kevin Dunnigan Chairman of the Board March 21, 2000 - ---------------------------- and Director T. Kevin Dunnigan /s/ Jeananne K. Hauswald Director March 21, 2000 - ---------------------------- Jeananne K. Hauswald /s/ Dean Jernigan Director March 21, 2000 - ---------------------------- Dean Jernigan /s/ Fred R. Jones Vice President-Chief March 20, 2000 - ---------------------------- Financial Officer Fred R. Jones /s/ Ronald B. Kalich, Sr Director March 20, 2000 - ---------------------------- Ronald B. Kalich, Sr. /s/ Robert A. Kenkel Director March 21, 2000 - ---------------------------- Robert A. Kenkel /s/ Kenneth R. Masterson Director March 20, 2000 - ---------------------------- Kenneth R. Masterson /s/ Thomas C. Mcdermott Director March 18, 2000 - ---------------------------- Thomas C. McDermott /s/ Jean-Paul Richard Director March 21, 2000 - ---------------------------- Jean-Paul Richard /s/ Jerre L. Stead Director March 21, 2000 - ---------------------------- Jerre L. Stead /s/ William H. Waltrip Director March 21, 2000 - ---------------------------- William H. Waltrip