Norgren NPN Solid State Pneumatic Cylinder & Actuator Switch, M/50/EAP Series, 10 → 30V dc, with LED indicator

Install this NPN (negative-positive-negative) solid-state switch from IMI Norgren to ensure the efficient running of your cylinders and actuators. It's a magnetically-operated round-style switch suitable for use with all magnetic piston cylinders. Quick position changes are possible due to the reliable switching and fast response times of less than 1ms. An IP68 (ingress protection) rating indicates complete protection against corrosives and water submersion for up to 30 minutes. This makes the unit suitable for use in heavy-duty environments.

• Plastic body and cable cover protect internal wiring and components against corrosive damage
• LED (light-emitting diode) indicator shows when the switch is on or off and helps with fault detection to prevent production downtimes
• I/O (input/output) link is available for point-to-point communications through a Fieldbus or Ethernet connection

• Electromagnetic coil sensing instruments
• Mobile electronics
• Medical equipment
• Automotive applications

PNP (positive-negative-positive) and NPN (negative-positive-negative) have nothing to do with the normally open (NO) or normally closed (NC) state of the contacts. It simply indicates a difference in circuit design and the type of transistor used.