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| (Mark One)                                                           |   |
| [   ]                                                                | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
| OR                                                                   |
| [ X ]                                                      | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 |
| For the transition period from July 4, 2011, through January 1, 2012 |

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| DELAWARE                                                       |   | 95-3917584 |
| (State or other jurisdiction of incorporation or organization) |   | (I.R.S. Employer Identification No.) |
|  N49 W13650 Campbell DriveMenomonee Falls, Wisconsin      |   | 53051 |
| (Address of Principal Executive Offices)                       |   | (Zip Code) |

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| Title of each class                                         | Name of each exchangeon which registered |
| Common Stock, $.01 par valuePreferred Stock Purchase Rights | The NASDAQ Global Select MarketThe NASDAQ Global Select Market |

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| Indicate by check mark if the Registrant is a well known seasoned issuer, as defined in Rule 405 of the Securities Act.                                                                                                                                                                                                                                                                                            | Yes [   ] | No [X]  |
| Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.                                                                                                                                                                                                                                                                                       | Yes [   ] | No [X]  |
| Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.                             | Yes [X] | No [   ] |
| Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    | Yes [   ] | No [  ] |
| Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.                                               |   | [  ] |

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|                                                                                                             | Large accelerated filer [   ]  | Accelerated filer [  ]  | Non-accelerated filer  [  ]  | Smaller reporting company [ X ]  |
| Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). | Yes [   ] | No [X] |   |

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| By:    | /s/ Marty J. Schwenner |   |
|   | Marty J. SchwennerVice President and Chief Financial Officer |   |

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|        |  |  |
| By:    | /s/ Marty J. Schwenner |   |
|   | Marty J. SchwennerVice President and Chief Financial Officer |   |

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|                                    |  |  |
| Signature                          | Title | Date |
|                               |   |   |
| /s/  MITCHELL I. QUAIN   | Chairman of the Board of Directors | February 1, 2013 |
| Mitchell I. Quain             |   |   |
| /s/  DAVID A. BLOSS, SR. | Director | February 1, 2013 |
| David A. Bloss, Sr.           |   |   |
| /s/  YON Y. JORDEN       | Director | February 1, 2013 |
| Yon Y. Jorden                 |   |   |
| /s/  ALAN B. LEVINE      | Director | February 1, 2013 |
| Alan B. Levine                |   |   |
| /s/  DAVID P. REILAND    | Director | February 1, 2013 |
| David P. Reiland              |   |   |
| /s/  PETER M. MCCORMICK  | Director, President and Chief Executive Officer | February 1, 2013 |
| Peter M. McCormick            |   |   |
| /s/  MARTY J. SCHWENNER  | Vice President and Chief Financial Officer | February 1, 2013 |
| Marty J. Schwenner            | (Principal Financial Officer) |   |
| /s/  MICHAEL J. STAUBER  | Vice President and Corporate Controller | February 1, 2013 |
| Michael J. Stauber                 | (Principal Accounting Officer) |   |

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| Exhibit No. |   | Note | Description of Exhibit |
| 3.1         |   | ** | Restated Certificate of Incorporation of the Company, effective as of March 12, 2012. |
| 3.2         |   | (1) | Magnetek, Inc. Amended and Restated By-Laws. |
| 4.1         |   | (2) | Registration Rights Agreement, dated as of April 29, 1991, by and among the Company, Andrew G. Galef, Frank Perna, Jr. and the other entities named therein. |
| 4.2         |   | (3) | Registration Rights Agreement, dated as of June 28, 1996, by and between the Company and U.S. Trust Company of California, N.A. |
| 4.3         |   | (4) | Registration Rights Agreement, dated as of June 26, 2002, by and between the Company and U. S. Trust Company N.A. |
| 4.4         |   | (5) | Rights Agreement, dated as of April 30, 2003, by and between the Company and The Bank of New York, as Rights Agent. |
| 4.5         |   | (4) | Agreement for Registration Rights, dated as of September 15, 2003, by and between the Company and SEI Private Trust Company. |
| 10.1        |   | (6) | Agreement for the Sale of Magnetek, Inc. Power Electronics Group, dated as of September 28, 2006, by and between the Company and Power-One, Inc. |
| 10.2        |   | (7) | Asset Purchase Agreement dated February 4, 2008 by and among Magnetek, Inc., Enrange LLC, W. Christopher Dulin, William Gibson and David Ashburn. |
| 10.3        |   | (8) | Settlement Agreement and Release, dated as of May 1, 2007, by and between the Company and Samsung Electro-Mechanics Co., Ltd. |
| 10.4        |   | (9) | Settlement Agreement, dated as of May 24, 2007, by and among the Company, Magnetek Controls, Inc., Magnetek National Electric Coil, Inc., Federal-Mogul Corporation, Federal-Mogul Products, Inc., and certain other parties thereto. |
| 10.5        |   | (10) | Settlement Agreement, dated as of June 12, 2008, by and among Magnetek, Inc., Ole K. Nilssen and Geo Foundation, Ltd. |
| 10.6        |   | (11) | Lease of Menomonee Falls, Wisconsin facility, dated as of July 23, 1999. |
| 10.7        |   | (12) | Industrial Building Lease (Net) dated as of November 26, 2006, and Amendment of Industrial Building Lease (Net) dated as of April 5, 2007, by and between the Company and W.C. Bradley Co. |
| 10.8(a)     |   | (13) | Revolving Credit Agreement dated as of November 6, 2007, by and between the Company and Associated Bank, N.A. |
| 10.8(b)     |   | (14) | First Amendment to Credit Agreement dated as of December 15, 2008 by and between the Company and Associated Bank, N.A. |
| 10.8(c)     |   | (15) | Second Amendment to Credit Agreement dated effective as of February 19, 2010 by and between the Company and Associated Bank, N.A. |
| 10.8(d)     |   | (16) | Third Amendment to Credit Agreement dated effective as of December 9, 2010, by and between the Company and Associated Bank, N.A. |
| 10.8(e)     |   | (17) | Fourth Amendment to Credit Agreement dated effective as of December 15, 2011, by and between the Company and Associated Bank, N.A. |
| 10.9*       |   | (18) | Change of Control Agreement, dated as of December 11, 2002, by and between Peter McCormick and the Company. |
| 10.10*      |   | (4) | Change of Control Agreement, dated as of July 29, 2003, by and between Marty Schwenner and the Company. |
| 10.11*      |   | (19) | Form of Change of Control Agreement for named executive officers Peter M. McCormick and Marty J. Schwenner effective as of December 21, 2010. |
| 10.12*      |   | (1) | Form of Retention Agreement for named executive officer Hungsun S. Hui effective as of February 24, 2009. |
| 10.13*      |   | (1) | Form of Retention Agreement for named executive officer Scott S. Cramer effective as of March 1, 2010. |
| 10.14*      |   | (19) | Form of Retention Agreement for named executive officer Michael J. Stauber effective as of February 28, 2011. |
| 10.15*      |   | (20) | Transition, Separation and Complete Release Agreement by and between the Company and Jolene A. Shellman, dated as of March 2, 2010. |
| 10.16(a)*   |   | (21) | Second Amended and Restated 2004 Stock Incentive Plan of Magnetek, Inc. (the “2004 Plan”). |

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|           |  |  |  |
| 10.16(b)* |   | (22) | First Amendment to the 2004 Plan. |
| 10.16(c)* |   | (23) | Form of Restricted Stock Award Agreement Pursuant to the 2004 Plan. |
| 10.16(d)* |   | (23) | Form of Non-Qualified Stock Option Agreement Pursuant to the 2004 Plan. |
| 10.16(e)* |   | (24) | Form of Non-Qualified Stock Option Agreement (Performance Based) Pursuant to the 2004 Plan. |
| 10.16(f)* |   | (24) | Form of Non-Qualified Stock Option Agreement (Retention Based) Pursuant to the 2004 Plan. |
| 10.16(g)* |   | (24) | Form of Restricted Stock Award Agreement (Performance Based) Pursuant to the 2004 Plan. |
| 10.16(h)* |   | (24) | Form of Restricted Stock Award Agreement (Retention Based) Pursuant to the 2004 Plan. |
| 10.16(i)* |   | (25) | Standard Terms and Conditions Relating to Non-Qualified Options for the 2004 Plan. |
| 10.17*    |   | (26) | Amended and Restated 2010 Non-Employee Director Stock Option Plan of Magnetek, Inc. |
| 10.18*    |   | (22) | Magnetek, Inc. Director Compensation and Deferral Investment Plan. |
| 21.1      |   | ** | Subsidiaries of the Registrant as of January 1, 2012. |
| 23.1      |   | ** | Consent of Independent Registered Public Accounting Firm. |
| 31.1      |   | ** | Certification Pursuant to 15 U.S.C. Section 7241. |
| 31.2      |   | ** | Certification Pursuant to 15 U.S.C. Section 7241. |
| 32.1      |   | ** | Certifications Pursuant to 18 U.S.C. Section 1350. |
| *         |   | Indicates a management contract or compensatory plan or arrangement |
| **        |   | Filed with Form 10-KT filed March 15, 2012. |
| (1)       |   | Previously filed with Form 8-K filed February 9, 2009, and incorporated herein by this reference. |
| (2)       |   | Previously filed with Form 10-K for Fiscal Year ended June 30, 1991, and incorporated herein by this reference. |
| (3)       |   | Previously filed with Form 10-K for Fiscal Year ended June 30, 1996, and incorporated herein by this reference. |
| (4)       |   | Previously filed with Form 10-Q for quarter ended September 30, 2003, and incorporated herein by this reference. |
| (5)       |   | Previously filed with Form 8-K filed May 12, 2003, and incorporated herein by this reference. |
| (6)       |   | Previously filed with Form 10-K for Fiscal Year ended July 2, 2006, and incorporated herein by this reference. |
| (7)       |   | Previously filed with Form 8-K filed February 5, 2008, and incorporated herein by this reference. |
| (8)       |   | Previously filed with Form 8-K filed May 1, 2007, and incorporated herein by this reference. |
| (9)       |   | Previously filed with Form 8-K filed June 4, 2007, and incorporated herein by this reference. |
| (10)      |   | Previously filed with Form 8-K filed June 13, 2008, and incorporated herein by this reference. |
| (11)      |   | Previously filed with Form 10-K for Fiscal Year ended June 27, 1999, and incorporated herein by this reference |
| (12)      |   | Previously filed with Form 8-K filed August 23, 2007, and incorporated herein by this reference |
| (13)      |   | Previously filed with Form 8-K filed November 7, 2007, and incorporated herein by this reference. |
| (14)      |   | Previously filed with Form 8-K filed December 18, 2008, and incorporated herein by this reference. |
| (15)      |   | Previously filed with Form 8-K filed February 22, 2010, and incorporated herein by this reference. |
| (16)      |   | Previously filed with Form 8-K filed December 13, 2010, and incorporated herein by this reference. |
| (17)      |   | Previously filed with Form 8-K filed December 19, 2011, and incorporated herein by this reference. |
| (18)      |   | Previously filed with Form 10-Q for Quarter ended December 31, 2002, and incorporated herein by this reference. |
| (19)      |   | Previously filed with Form 10-Q for quarter ended April 3, 2011, and incorporated herein by this reference. |
| (20)      |   | Previously filed with Form 8-K filed March 3, 2010, and incorporated herein by this reference. |
| (21)      |   | Previously filed with Company's Proxy Statement dated September 6, 2009, for the 2009 Annual Meeting of the Shareholders, and incorporated herein by this reference. |
| (22)      |   | Previously filed with Company's Proxy Statement dated September 19, 2011, and incorporated herein by this reference. |
| (23)      |   | Previously filed with Form 10-Q for quarter ended December 27, 2009, and incorporated herein by this reference. |
| (24)      |   | Previously filed with Form 10-Q for quarter ended October 3, 2010, and incorporated herein by this reference. |
| (25)      |   | Previously filed with Form 10-K for Fiscal Year ended June 27, 2010, and incorporated herein by this reference. |
| (26)      |   | Previously filed with Company's Proxy Statement dated September 20, 2010, for the 2010 Annual Meeting of the Shareholders, and incorporated herein by this reference. |