PAT Hirschmann 031-002-060-011 A2B Switch Shop the PAT Hirschmann 031-002-060-011 A2B Switch at SkyAzúl Equipment Solutions. This critical safety switch helps prevent two-blocking accidents and ensures safe crane operation. We provide genuine Hirschmann parts and expert technical support for all your crane safety needs. Contact SkyAzúl today for OEM replacements. Visit Us: https://www.skyazul.com/product-category/1863/a2b-switches-cables-assemblies