General Purpose and Hazardous area switches are categorized by NEMA standards.

Sanitary Switches - General and Hazardous Area

Products
ITT Neo-Dyn
117P Sanitary Series-Internal Adjustment
NEMA 7 & 9
Field adjustable. Low to mid-range applications. The Tri-Clamp® compatible, polished, process connection makes this switch for food, beverage and other sanitary services. Enclosure 6.
ITT Neo-Dyn
Conventional Switches vs ITT Neo-Dyn Switches
ITT Neo-Dyn
Definitions & Terminology
ITT Neo-Dyn
Media Compatibility Guide
ITT Neo-Dyn
Quick Refrence Chart