(1)    Possession; rendering equipment unusable; disposition on debtor’s premises. After default, a secured party:

      (a)    May take possession of the collateral; and

      (b)    Without removal, may render equipment unusable and dispose of collateral on a debtor’s premises under s. 409.610.

   (2)   Judicial and nonjudicial process. A secured party may proceed under sub. (1):

      (a)    Pursuant to judicial process; or

      (b)    Without judicial process, if it proceeds without breach of the peace.

   (3)   Assembly of collateral. If so agreed, and in any event after default, a secured party may require the debtor to assemble the collateral and make it available to the secured party at a place to be designated by the secured party which is reasonably convenient to both parties.