EXHIBIT 21 SUBSIDIARIES OF REGISTRANT Place of Name Incorporation Augat Inc. Massachusetts AUG-ISO Inc. New Jersey Augat Communication Products Inc. Washington Augat Realty Inc. Massachusetts Augat Wiring Systems Inc. Alabama LRC Electronics, Inc. New York Reliable Electronic Finishing Company, Inc. Massachusetts Elastomeric Technologies Inc. Pennsylvania Augat AG Switzerland Augat Components GmbH* Germany Augat K.K. Japan Augat Ltd. United Kingdom Augat AB Sweden Augat Manufacturing S.A. Switzerland Augat Pte. Ltd. Singapore Augat SRL Italy Augat Canada Canada Augat GmbH Germany Augat International Ltd. U.S. Virgin Islands Augat Pty. Ltd. Australia Augat S.A. France Augat S.A. de C.V. Mexico Blackburn Electric Canada Inc. Canada E.K. Campbell Company Missouri Catamount Manufacturing, Inc. Massachusetts Centennial Plastics, Inc. Arkansas Catamount GmbH Germany Catamount de Mexico, S.A. de C.V. Mexico Techspan Catamount Inc. Canada FL Amelec, Inc. Texas American Electric de Mexico, S.A. de C.V. Mexico Thomas & Betts Monterrey S.A. de C.V. Mexico International Energy Saver, Inc. Arizona Pilgrim Pacific Inc. Canada 1065381 Ontario Inc. Canada Pilgrim Technical Products Limited Canada Pilgrim Technical, Inc. Pennsylvania Thomas & Betts International, Inc. Delaware Amerace Corporation Delaware Amerace Ltd. Canada Amerace de Mexico S.A. de C.V. Mexico Conductron Corporation Massachusetts Conductron Subsidiary Corp. Massachusetts Conductron Holding Company Delaware Eagle Utility Sales Inc. Canada Elastimold Corporation Illinois Joint Ventures of Amerace Corporation: Euromold S.A. Belgium Fujimold Ltd. Japan Taimold Electrical Ltd. Taiwan Reznor Europe N.V. Belgium Reznor France SARL France Reznor Lufttechnik GmbH Germany Reznor U.K. Ltd. United Kingdom Thomas & Betts A Ltd. Israel Thomas & Betts Aktiebolag Sweden Thomas & Betts Euro Distribution S.A. Belgium Thomas & Betts Export, Inc. Barbados Thomas & Betts France France Thomas & Betts GmbH Germany Thomas & Betts GmbH & Company KG Germany Thomas & Betts Holdings (U.K.) Ltd. United Kingdom Amerace Limited United Kingdom Thomas & Betts Limited United Kingdom Thomas & Betts Manufacturing Limited United Kingdom Thomas & Betts Hong Kong, Limited Hong Kong Thomas & Betts Hungary Kft. Hungary Thomas & Betts Japan, Ltd. Japan Thomas & Betts (Luxembourg) S.A. Luxembourg Thomas & Betts (Malaysia) Sdn. Bhd. Malaysia Thomas & Betts de Mexico S.de R.L. de C.V. Mexico Thomas & Betts Pty. Limited Australia Thomas & Betts (S.E. Asia) Pte. Ltd. Singapore Thomas & Betts S.p.A. Italy Thomas & Betts S.A. Spain TB Intl, S.L. (minority interest) Spain Thomas & Betts Limited Canada T&B Commander Electrical Materials Inc. Canada Thomas & Betts (Ontario) Ltd. Canada Thomas & Betts Puerto Rico Corporation Delaware * 50% owned by Augat AG and 50% by Augat GmbH All subsidiaries are included in the consolidated financial statements.