The VSDP mechanical safety door switch is the contact-based backbone of machine guarding: a positive-opening position switch that reports whether a guard door, hinged panel or sliding cover is really closed. A PA66 flame retardant body, gold plated silver alloy contacts and an IP67 seal keep it working in coolant mist, dust and washdown zones, while five contact configurations from a single 1NC contact up to 3NC allow one part family to serve simple panels and redundant