This Square D 9007CR53ED heavy duty industrial limit switch with NEMA enclosure for hazardous locations has one normally open (NO) and one normally closed (NC) contact and a top push plunger adjustable head type. This limit switch is Underwriters Laboratories (UL) listed, Canadian Standards Association (CSA) certified, and European Conformity (CE) marked. Square D limit switches are manufactured by Schneider Electric. Square D brand pressure, float, and limit switches have been synonymous with safety, quality, and reliable performance for over 100 years. First launched by Detroit Fuse and Manufacturing in 1902, the Square D brand and its products continue to earn customer trust today.