Explosionproof installations
A mechanism or operator in explosionproof execution is able to avoid the triggering of sparks, according to 1127:1997 standards.
In case of explosionproof installations, both mechanism and operator must be treated with cataphoresis and standard galvanization except for some mechanical components that have to be always in stainless steel (cables,nuts and bolts, guides, spacer guides...).
The electrical components (motor and contacts) must be in explosionproof execution, too.