1003E-A1-J is a series 1000E explosion-proof diaphragm operated pressure switch. It has the same rugged construction as used in series 1000W weatherproof design combined in this new unit. UL listed for Class I, Groups A, B, C and D; Class II, Groups E, F and G. Bellville spring movement permits mounting of control in any position and helps prevent contact chatter. High over-pressure protection and vibration resistance are also featured. Typical applications include chemical, petroleum, food and drug processing industries, process and industrial applications.