EXECUTION COPY


                     AMENDMENT NO. 1 TO 364-DAY CREDIT AGREEMENT


     AMENDMENT dated as of January 4, 1999 to the 364-Day Credit Agreement 
dated as of July 1, 1998 (the "CREDIT AGREEMENT") among THOMAS & BETTS 
CORPORATION, the BANKS party thereto and MORGAN GUARANTY TRUST COMPANY OF NEW 
YORK, as Agent.

     The parties hereto agree as follows:

     SECTION 1.  DEFINED TERMS; REFERENCES.  Unless otherwise specifically 
defined herein, each term used herein which is defined in the Credit 
Agreement has the meaning assigned to such term in the Credit Agreement. Each 
reference to "hereof", "hereunder", "herein" and "hereby" and each other 
similar reference and each reference to "this Agreement" and each other 
similar reference contained in the Credit Agreement shall, after this 
Amendment becomes effective, refer to the Credit Agreement as amended hereby.

     SECTION 2.  AMENDMENT OF SECTION 5.07.  Calculations of Consolidated 
Operating Cash Flow for the respective periods of four consecutive fiscal 
quarters ending April 4, 1999 and July 4, 1999 shall exclude the 
restructuring and special charges totaling $108.5 million incurred by the 
Borrower in, and reflected in the Borrower's consolidated statement of income 
for, the fiscal quarter ended October 4, 1998.

     SECTION 3.  REPRESENTATIONS OF BORROWER.  The Borrower represents and 
warrants that (i) the representations and warranties of the Borrower set 
forth in Article 4 of the Credit Agreement are true on and as of the date 
hereof and (ii) no Default has occurred and is continuing on the date hereof.

     SECTION 4.  GOVERNING LAW.  This Amendment shall be governed by and 
construed in accordance with the laws of the State of New York.

     SECTION 5.  COUNTERPARTS.  This Amendment may be signed in any number of 
counterparts, each of which shall be an original, with the same effect as if 
the signatures thereto and hereto were upon the same instrument.

     SECTION 6.  EFFECTIVENESS.  This Amendment shall become effective as of 
January 4, 1999 when the Agent shall have received from each of the Borrower 
and the Required Banks a counterpart hereof signed by such party or facsimile 
or 




other written confirmation (in form satisfactory to the Agent) that such 
party has signed a counterpart hereof.


                                     2



     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date first above written.

                                   THOMAS & BETTS CORPORATION



                                   By: /s/Fred R. Jones
                                       ------------------------------
                                       Title: Vice President - Chief Financial
                                              Officer



                                   MORGAN GUARANTY TRUST 
                                     COMPANY OF NEW YORK


                                   By: /s/ Robert Bottamedi
                                       ------------------------------
                                       Title: Vice President



                                   BANK OF AMERICA NATIONAL
                                   TRUST AND SAVINGS ASSOCIATION


                                   By: /s/Nancy S. Goldman
                                       ------------------------------
                                       Title: Vice President



                                   WACHOVIA BANK, N.A.


                                   By: /s/ Karin E. Reel
                                       ------------------------------
                                       Title: Vice President





                                   ABN AMRO BANK N.V.

                                   By: /s/ Patrick Thom
                                       ------------------------------
                                       Title: Vice President



                                   By: /s/Robert A. Budnek
                                       ------------------------------
                                       Title: Vice President



                                    THE BANK OF NOVA SCOTIA


                                     By: /s/M.D. Smith
                                         ----------------------------
                                         Title: Agent



                                   CIBC INC.


                                   By: /s/Cyd Petre
                                       ------------------------------
                                       Title: Executive Director



                                   DEUTSCHE BANK AG, NEW YORK 
                                   AND/OR CAYMAN ISLANDS BRANCH


                                   By: /s/Alexander Karow
                                       ------------------------------
                                       Title: Associate


                                   By: /s/Stephan Wiedemann
                                       ------------------------------
                                       Title: Director





                                   FIRST UNION NATIONAL BANK


                                   By: /s/Robert T. Page
                                       ------------------------------
                                       Title: Vice President


                                   SUNTRUST BANK, NASHVILLE, N.A.


                                   By: /s/Bryan W. Ford
                                       ------------------------------
                                       Title: Vice President



                                   THE NORTHERN TRUST COMPANY


                                   By: /s/Nicole R. Kidder
                                       ------------------------------
                                       Title: Second Vice President



                                   BANCA NAZIONALE DEL LAVORO
                                   S.P.A., NEW YORK BRANCH


                                   By: ______________________________
                                       Title: 



                                   By: ______________________________
                                       Title: 


                                   THE BANK OF NEW YORK


                                   By: /s/Ann Marie Hughes
                                       ------------------------------
                                       Title: Vice President




                                   THE BANK OF TOKYO-MITSUBISHI, LTD.,
                                   ATLANTA AGENCY


                                   By: /s/William Otott
                                       ------------------------------
                                       Title: Vice President



                                   FIRST AMERICAN NATIONAL BANK


                                   By: /s/William R. Stutts
                                       ------------------------------
                                       Title: Senior Vice President



                                   KBC BANK N.V.


                                   By: /s/Robert Snauffer
                                       ------------------------------
                                       Title: First Vice President



                                   By: /s/Marcel Claes
                                       ------------------------------
                                       Title: Deputy General Manager



                                   THE SUMITOMO BANK, LTD.


                                   By: /s/Gary Franke
                                       ------------------------------
                                       Title: Vice President & Manager




                                   UNION PLANTERS NATIONAL BANK


                                   By: /s/Elizabeth Rouse
                                       ------------------------------
                                       Title: Vice President