Exhibit 21

HUBBELL INCORPORATED AND SUBSIDIARIES

LISTING OF SIGNIFICANT SUBSIDIARIES

	State or Other	Percentage
	Jurisdiction of	Owned By
	Incorporation	Registrant
Artesanias Baja, S.A. de C.V.	Mexico		100	%
Bel Manufacturera, S.A. de C.V.	Mexico		100	%
Dual-Lite Manufacturing Inc.	Delaware		100	%
Fabrica de Pecas Electricas Delmar LTDA.	Brazil		100	%
GAI-Tronics Corporation	Delaware		100	%
Gleason Reel Corp.	Delaware		100	%
Haefely Test AG	Switzerland		100	%
Harvey Hubbell Caribe, Inc.	Delaware		100	%
Hipotronics, Inc.	Delaware		100	%
Hubbell Building Automation, Inc.	Texas		100	%
Hubbell Canada LP	Canada		100	%
Hubbell de Mexico, S.A. de C.V.	Mexico		100	%
Hubbell Distribution, Inc.	Delaware		100	%
Hubbell Incorporated (Delaware)	Delaware		100	%
Hubbell Industrial Controls, Inc.	Delaware		100	%
Hubbell Lighting, Inc.	Connecticut		100	%
Hubbell Limited	United Kingdom		100	%
Hubbell Power Systems, Inc.	Delaware		100	%
Progress Lighting, Inc.	Delaware		100	%
Pulse Communications, Inc.	Virginia		100	%