Wis. Stat. § 411.525: Lessor’s right to possession of goods.

(1) If a lessor discovers that the lessee is insolvent, the lessor may refuse to deliver the goods.

(2) After a default by the lessee under the lease contract of the type described in s. 411.523 (1) or (3) (a) or, if agreed, after other default by the lessee, the lessor has the right to take possession of the goods. If the lease contract so provides, the lessor may require the lessee to assemble the goods and make them available to the lessor at a place designated by the lessor that is reasonably convenient to both parties. Without removal, the lessor may render unusable any goods employed in trade or business, and may dispose of goods on the lessee’s premises.

(3) The lessor may proceed under sub. (2) without judicial process if it can be done without breach of the peace or the lessor may proceed by action.