59021 Series - Aluminum Miniature Firecracker Reed Sensor

DataSheet:Littelfuse Reed Sensors 59021 datasheet

A miniature, cylindrical reed sensor with a robust aluminum body 15.24mm x 5.10mm (0.600" x 0.201") with a normally open contact. Capable of switching up to 170Vdc at 10W. Available with a range of sensitivity, cable length and connector options. Well suited for position and limit sensing, security, level sensing and linear actuator applications. Functions best with the 57020 actuator.

Note: The 57020 actuator is sold separately.

Features:

  • Magnetically-operated proximity sensor with aluminum body
  • Operates through non-ferrous materials such as wood, plastic or aluminum
  • Hermetically sealed contacts
  • Options of normally open, normally closed or single-pole-double-throw
  • Customer-defined sensitivity
  • Custom cable length and connector options available

Benefits:

  • Fits nicely into small, confined spaces
  • Quick and easy to install
  • Well suited for usage in high-moisture and contaminated environments
  • Non-contact solution, aesthetically more appealing than push-button or lever mechanical-type switches
  • Ideal for battery-powered applications as the contacts do not draw power when in the non-activated state
  • Reed contacts last for millions of operating cycles under micro-controller voltage and current logic-level loads

Applications:

  • Position and limit switching
  • Security
  • Level sensing
  • Linear actuators
Ordering Information
Catalog #Switching Power (W)Switching Voltage (V DC)Switching Current (A DC)Switching Voltage (V AC)Switching Current (A AC)Breakdown Voltage (V DC)Max Contact Resistance (Ω)Magnetic Sensitivity (AT)Nominal Activate Distance (mm)Switch Type
59021-1-S101700.251200.181750.256 to 106A:SPST-NO
59021-1-T101700.251200.181750.2510 to 154.5A:SPST-NO
Resources
Littelfuse Reed Sensors 59021 datasheet 59021
Flow Sensing in Tankless Water Heaters Application Note h-625
Magnetic Sensing in Washing Machines Application Note h-625
Rice Cooker Lid Lock Application Note h-625
Sensors Products Catalog h-625