Exhibit 21.0 Updated to December 31, 2001 SUBSIDIARIES Cooper has no parent. The subsidiaries of Cooper are listed in groupings that indicate the nature and management of the operations of each. Unless noted herein, all subsidiaries are wholly owned by Cooper or one of its subsidiaries. Place of Name Incorporation - ------------------------------------- ----------------- A. GENERAL CORPORATE ADMINISTRATION Brownly-Consultadoria e Projectos Lda Madeira Free Zone CBE Services, Inc. Delaware, U.S. CI Finance, Inc. Delaware, U.S. CI Leasing Company Delaware, U.S. Cooper Bussmann Finance, Inc. Delaware, U.S. Cooper Enterprises LLC Delaware, U.S. Cooper Europe Finance LLC Delaware, U.S. Cooper Europe Finance SNC France Cooper European Finance, Inc. Delaware, U.S. Cooper Finance Group L.P. United Kingdom Cooper Finance, Inc. Delaware, U.S. Cooper Finance Investment LLC Delaware, U.S. Cooper Finance Ltd. Bermuda Cooper France Finance, Inc. Delaware, U.S. Cooper France Finance SNC France Cooper France Investment LLC Delaware, U.S. Cooper Global LLC Delaware, U.S. Cooper Holdings Ltd. Bermuda Cooper Hungary Group Financing Limited Liability Company Hungary Cooper Industries (Canada) Inc. Ontario, Canada Cooper Industries Australia Pensions Pty Ltd Australia Cooper Industries Australia Pty Limited Australia Cooper Industries Finance B.V. Netherlands Cooper Industries Finanzierungs-GbR Germany Cooper Industries Foreign Sales Company, Limited Barbados Cooper Industries Foundation Ohio, U.S. Cooper Industries International Company Delaware, U.S. Cooper Industries, Inc. Delaware, U.S. Cooper Industries, Ltd. Bermuda Cooper International Company Delaware, U.S. Cooper International Finance, Inc. Delaware, U.S. Cooper Investment Group L.P. United Kingdom Cooper Luxembourg Finance S a r.l. Luxembourg Cooper Mergerco, Inc. Ohio, U.S. Cooper Pensions Limited United Kingdom Cooper Power Systems Finance, Inc. Delaware, U.S. Cooper Power Tools Finance, Inc. Delaware, U.S. Place of Name Incorporation - ------------------------------------- ----------------- Cooper Securities, Inc. Texas, U.S. Cooper Technologies Company Delaware, U.S. Cooper Western Hemisphere Company Delaware, U.S. Coopind Inc. Delaware, U.S. B. ELECTRICAL PRODUCTS Alpha Lighting, Inc. Delaware, U.S. Arrow-Hart, S.A. de C.V. Mexico Atlite Inc. Delaware, U.S. Blessing International B.V. Netherlands Borden/Reaves, Inc. California, U.S. Broomco (1644) Limited United Kingdom Bussmann do Brasil Ltda. Brazil Bussmann International, Inc. Delaware, U.S. Bussmann, S.A. de C.V. Mexico BZ Holdings Inc. Delaware, U.S. Capri Codec S.A. France CEAG Apparatebau Hundsbach GmbH & Co. KG Germany CEAG Apparatebau Hundsbach Verwaltungsgesellschaft mbH Germany CEAG Benelux B.V. Netherlands CEAG Crouse-Hinds Asia Pacific Pte. Ltd. Singapore CEAG Electronics GmbH Germany CEAG Flameproof Control Gears Private Limited (51% owned by India CEAG Sicherheitstechnik GmbH) CEAG Middle East Limited Liability Company (49% owned by Dubai, U.A.E. Cooper Industries International Company) CEAG Norge AS Norway CEAG Nortem, S.A. Spain CEAG Sicherheitstechnik GmbH Germany Ceramica Creus, S.A. de C.V. Mexico Componentes de Iluminacion, S.A. de C.V. Mexico Connectron, Inc. New Jersey, U.S. Cooper (UK) Group plc United Kingdom Cooper (U.K.) Limited Delaware, U.S. Cooper Asia, Inc. Delaware, U.S. Cooper B-Line GmbH Germany Cooper B-Line, Inc. Delaware, U.S. Cooper B-Line Limited United Kingdom Cooper Bussmann, Inc. Delaware, U.S. Cooper Bussmann India Private Limited India Cooper Corelite, Inc. Delaware, U.S. Cooper Crouse-Hinds (UK) Ltd. United Kingdom Cooper Electrical Australia Pty. Limited Australia Cooper Electrical Products Mexico, Inc. Delaware, U.S. Cooper Electronic Technologies, Inc. Florida, U.S. Cooper Elektrische Ausrustungen GmbH Germany Cooper Elektrische Ausrustungen GmbH & Co. Offene Germany Handelsgesellschaft Cooper Industries GmbH Germany Place of Name Incorporation - ------------------------------------- ----------------- Cooper Industries (U.K.) Limited United Kingdom Cooper Lighting and Security Limited United Kingdom Cooper Lighting de Mexico, S.A. de C.V. Mexico Cooper Lighting, Inc. Delaware, U.S.A. Cooper Lighting Internacional, S. de R.L. de C.V. Mexico Cooper Menvier B.V. Netherlands Cooper Menvier France SARL France Cooper Menvier S.A. France Cooper Power Systems do Brasil Ltda. Brazil Cooper Power Systems, Inc. Delaware, U.S. Cooper Power Systems Overseas, Inc. Delaware, U.S. Cooper Power Systems, S. de R.L. de C.V. Mexico Cooper Power Systems Transportation Company Wisconsin, U.S. Cooper Security Limited United Kingdom Cooper Wiring Devices, Inc. New York, U.S. Cooper Wiring Devices de Mexico, S.A. de C.V. Mexico Cortek Internacional, S.A. Costa Rica Crompton Lighting Holdings Limited United Kingdom Crompton Lighting International Limited United Kingdom Crompton Lighting Investments Limited United Kingdom Crouse-Hinds Domex, S.A. de C.V. Mexico CTIP Inc. Delaware, U.S. Digital Lighting Holdings Limited (50% owned by Alpha British Virgin Islands Lighting, Inc.) Digital Lighting Co., Limited (50% owned by Digital Hong Kong Lighting Holdings Limited and 1% owned by Alpha Lighting, Inc.) Dunfermline Company Ireland Eagle Electric of Canada Ltd. Canada EAM Asset Management Corp. Delaware, U.S. Electromanufacturas, S.A. de C.V. Mexico Fulleon Limited United Kingdom Hi-Tech Enclosures Limited United Kingdom Iluminacion Cooper de las Californias S.A. de C.V. Mexico Industrias AMB, S.A. de C.V. Mexcio Industrias Royer, S.A. de C.V. Mexico McGraw-Edison Company Delaware, U.S. McGraw-Edison Development Corporation Delaware, U.S. Menvier CSA Srl Italy Menvier Group plc United Kingdom Menvier Overseas Holdings Limited United Kingdom Menvier Research Limited Ireland North American Consumer Products, Inc. Delaware, U.S. PCV Incorporated Delaware, U.S. PDS Edison Power Systems Co., Ltd. China (60% owned by Cooper Power Systems, Inc.) PowerStor, Inc. California, U.S. Pretronica Precisao Electronica Lda. Portugal Regent Far East Limited Hong Kong Regent Holding Corp. Delaware, U.S. Regent Lighting Corporation Delaware, U.S. Place of Name Incorporation - ------------------------------------- ----------------- RL Manufacturing Sdn. Bhd. Malaysia RLS Incorporated Delaware, U.S. RTE Far East Corporation Taiwan Scantronic Benelux B.V. Netherlands Scantronic Holdings Limited United Kingdom Scantronic International Limited United Kingdom Shanghai RLS Lighting Appliance Manufacturing China Company Limited (51% owned by Regent Lighting Corporation) Silver Light International Limited (50% owned by Cooper British Virgin Islands International Company) Societe Civile Immobiliere NOEMY France Transmould Limited Ireland Univel EPE Greece Western Power Products, Inc. Oregon, U.S. C. TOOLS & HARDWARE Airetool and Yost Superior Realty, Inc. Ohio, U.S. (50% owned by Cooper Power Tools, Inc.) Collins Associates Ltd. British Virgin Islands Cooper Brands, Inc. Delaware, U.S. Cooper (Great Britain) Ltd. United Kingdom Cooper Italia S.p.A. Italy Cooper Industries France SARL France Cooper Power Tools B.V. Netherlands Cooper Power Tools GmbH Beteiligungen Germany Cooper Power Tools, Inc. Delaware, U.S.A. Cooper Power Tools de Mexico, S.A. de C.V. Mexico Cooper Power Tools GmbH & Co. Germany Cooper Tools B.V. Netherlands Cooper Tools de Mexico, S. de R.L. de C.V. Mexico Cooper Tools GmbH Germany Cooper Tools Hungaria Kft. Hungary Cooper Tools Industrial Ltda. Brazil Cooper Tools Manufacturing, S. de R.L. de C.V. Mexico Cooper Tools Mexico, Inc. Delaware, U.S. Cooper Tools Pty. Limited Australia Cooper Tools S.A. France Cooper Tools, Inc. Delaware, U.S. Deutsche Gardner-Denver Beteiligungs-GmbH Germany Disston Co. de Mexico, S.A. de C.V. Mexico Empresa Andina de Herramientas, S.A. Colombia Erem S.A. Switzerland GETA-Werk Gebr. Teipel GmbH Germany KME Masinconstruct Romania S.R.L. (90% owned by Cooper Romania Industries Tools Hungaria Kft.) KME Slovakia, spol. s.r.o. (90% owned by Cooper Tools Slovakia Hungaria Kft.) KMEF Kft. (50% owned by Cooper Tools Hungaria Kft.) Hungary Place of Name Incorporation - ------------------------------------- ----------------- Lufkin Europa B.V. Netherlands Metro Mex, S.A. de C.V. Mexico Metronix Messgerate und Elektronik GmbH Germany Nicholson Mexicana, S.A. de C.V. Mexico Recoules S.A. France SHK Kft. Hungary Societe Civile Immobiliere PRECA France Societe Civile Immobiliere R.M. France The Cooper Group, Inc. Delaware, U.S. D. INACTIVE SUBSIDIARIES B & S Fuses Limited United Kingdom Bussmann (U.K.) Limited United Kingdom Carlton Santee Corp. California, U.S CSP Industries GmbH Germany Cooper CBL Limited United Kingdom Cooper Power Systems Pty. Ltd. Australia Crouse-Hinds de Venezuela, C.A. Venezuela DFL Fusegear Limited United Kingdom Eagle Electric MFG. Co. Mexico, S.A. de C.V. Mexico Eagle Electric Mfg. Co., (V.I.) Inc. U.S. Virgin Islands Edison Fusegear, Inc. Delaware, U.S. Firecom Limited United Kingdom Gardner-Denver (Aust.) Pty. Limited Australia Gardner-Denver International, C.A. Venezuela Homelink Telecom Limited United Kingdom JSB Electrical Limited United Kingdom JSB Mains Lighting Limited United Kingdom Kestron Units Limited United Kingdom Mannin Circuits Limited Isle of Man McGraw-Edison Export Corporation Delaware, U.S. Menvier ApS Denmark Menvier (CJS) Ltd. United Kingdom Menvier Electronics International Pty Ltd. Australia Menvier Limited United Kingdom Menvier Security Limited United Kingdom Menvier-Amberlec Systems Limited United Kingdom MSG Leasing Limited United Kingdom Premium Safety Products Limited United Kingdom Pretronica II - Companhia de Seguranca, Lda. Portugal Ragtrell Limited United Kingdom Regalsafe Limited United Kingdom Scantronic B.V. Netherlands Scantronic International Holdings B.V. Netherlands Scantronic Limited United Kingdom Si-Tronic Srl (49% owned by Scantronic International Italy Limited) Synchrobell Limited United Kingdom WPC Corporation, Inc. Delaware, U.S. Place of Name Incorporation - ------------------------------------- ----------------- C. TOOLS & HARDWARE Airetool and Yost Superior Realty, Inc. Ohio, U.S. (50% owned by Cooper Power Tools, Inc.) Collins Associates Ltd. British Virgin Islands Cooper (Great Britain) Ltd. United Kingdom Cooper Italia S.p.A. Italy Cooper Industries France SARL France Cooper Power Tools B.V. Netherlands Cooper Power Tools GmbH Beteiligungen Germany Cooper Power Tools, Inc. Delaware, U.S.A. Cooper Power Tools de Mexico, S.A. de C.V. Mexico Cooper Power Tools GmbH & Co. Germany Cooper Tools B.V. Netherlands Cooper Tools de Mexico, S. de R.L. de C.V. Mexico Cooper Tools GmbH Germany Cooper Tools Hungaria Kft. Hungary Cooper Tools Industrial Ltda. Brazil Cooper Tools Manufacturing, S. de R.L. de C.V. Mexico Cooper Tools Pty. Limited Australia Cooper Tools S.A. France Cooper Tools, Inc. Delaware, U.S. Deutsche Gardner-Denver Beteiligungs-GmbH Germany Disston Co. de Mexico, S.A. de C.V. Mexico Empresa Andina de Herramientas, S.A. Colombia Erem S.A. Switzerland GETA-Werk Gebr. Teipel GmbH Germany KME Masinconstruct Romania S.R.L. (90% owned by Cooper Romania Industries Tools Hungaria Kft.) KME Slovakia, spol. s.r.o. (90% owned by Cooper Tools Slovakia Hungaria Kft.) KMEF Kft. (50% owned by Cooper Tools Hungaria Kft.) Hungary Lufkin Europa B.V. Netherlands Metro Mex, S.A. de C.V. Mexico Metronix Messgerate und Elektronik GmbH Germany Nicholson Mexicana, S.A. de C.V. Mexico Recoules S.A. France SHK Kft. Hungary Societe Civile Immobiliere PRECA France Societe Civile Immobiliere R.M. France The Cooper Group, Inc. Delaware, U.S. Place of Name Incorporation - ------------------------------------- ----------------- D. INACTIVE SUBSIDIARIES ACN 002 055 414 PTY Limited Australia Aerocharter (Coventry) Limited (50% owned by Menvier Group United Kingdom plc) B & S Fuses Limited United Kingdom Bussmann (U.K.) Limited United Kingdom Carlton Santee Corp. California, U.S CSP Industries GmbH Germany Cooper Power Systems Pty. Ltd. Australia Crouse-Hinds de Venezuela, C.A. Venezuela DFL Fusegear Limited United Kingdom Eagle Electric MFG. Co. Mexico, S.A. de C.V. Mexico Eagle Electric Mfg. Co., (V.I.) Inc. U.S. Virgin Islands Edison Fusegear, Inc. Delaware, U.S. Firecom Limited United Kingdom Gardner-Denver (Aust.) Pty. Limited Australia Gardner-Denver International, C.A. Venezuela Homelink Telecom Limited United Kingdom Inmobiliaria Cisco, S.A. Mexico JSB Electrical Limited United Kingdom JSB Mains Lighting Limited United Kingdom Kearney-National (Canada) Limited Ontario, Canada Kestron Units Limited United Kingdom Menvier (CJS) Ltd. United Kingdom Menvier Electronics International Pty Ltd. Australia Menvier Limited United Kingdom Menvier Security Limited United Kingdom Menvier-Amberlec Systems Limited United Kingdom McGraw-Edison Export Corporation Delaware, U.S. MSG Leasing Limited United Kingdom Premium Safety Products Limited United Kingdom Pretronica II - Companhia de Seguranca, Lda. Portugal Ragtrell Limited United Kingdom Regalsafe Limited United Kingdom Scantronic B.V. Netherlands Scantronic International Holdings B.V. Netherlands Scantronic Limited United Kingdom Scantronic Spain S.A. Spain Synchrobell Limited United Kingdom WPC Corporation, Inc. Delaware, U.S. WQ Australasia Pty. Ltd. Australia WQ Australia Pty. Ltd. Australia York-Lite Electronics, Inc. Texas, U.S.