SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* SEALE STEPHEN W JR (Last) (First) (Middle) PO BOX 790 (Street) LAVERNIA TX 78121-0790 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol POWELL INDUSTRIES INC [ POWL ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 05/09/2008
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/09/2008		M		2,000(1)	A	$23.48	20,414(2)	D
Common Stock	05/09/2008		M		2,000(3)	A	$15.1	22,414(2)	D
Common Stock	05/09/2008		M		2,000(4)	A	$16.48	24,414(2)	D
Common Stock	05/09/2008		S		6,000	D	$50.018	18,414(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options	$23.48	05/09/2008		M			2,000	06/26/2003	06/26/2010	Common Stock	2,000	$23.48	0	D
Stock Options	$15.1	05/09/2008		M			2,000	06/25/2004	06/25/2011	Common Stock	2,000	$15.1	0	D
Stock Options	$16.48	05/09/2008		M			2,000	06/24/2005	06/24/2012	Common Stock	2,000	$16.48	0	D

Explanation of Responses:

1. Becomes exercisable on the first anniversary of 06/26/2002, the date of the grant.

2. This number does not include shares of common stock issuable upon exercise of stock options, which were inadvertently included in Column 5 of the reporting person's two most recent Form 4 reporting Table I information, filed on August 30, 2007 and January 3, 2008, but does include 3,000 shares of restricted stock subject to forfeiture upon certain conditions.

3. Becomes exercisable on the first anniversary of 06/25/2003, the date of the grant.

4. Becomes exercisable on the first anniversary of 06/24/2004, the date of the grant.

Remarks:

	Don R. Madison, Power of Attorney for Stephen W. Seale, Jr.	05/13/2008
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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