EX-21.1 4 powl-20120930ex2115ba8b9.htm EX-21.1

EXHIBIT 21.1

SUBSIDIARIES OF POWELL INDUSTRIES, INC.

Name of Subsidiary | Incorporated
Powell Industries, Inc. | Delaware
Powell Electrical Systems, Inc. | Delaware
Transdyn, Inc. | Delaware
Powell Industries International, Inc. | Delaware
Powell Industries Asia, Inc. | Delaware
Powell International Europe B.V. | The Netherlands
Switchgear & Instrumentation Ltd | United Kingdom
Switchgear & Instrumentation Properties Ltd | United Kingdom
Powell Canada B.V. | The Netherlands
Powell Canada Inc. | Canada
Powell Industries International B.V. | Netherlands