Power Electronics
The new sensor39s diameter of just 58 mm 0228 inches makes it easy to install into confined spaces in existing structures It is designed for use with the matching 57022 actuator Image courtesy of Littelfuse

The new sensor's diameter of just 5.8 mm (0.228 inches) makes it easy to install into confined spaces in existing structures. It is designed for use with the matching 57022 actuator. (Image courtesy of Littelfuse).

Expanded Sensor Product Line with Compact, Magnetically Operated Reed Sensor

Littelfuse Inc. has introduced the 59022 Series Firecracker Reed Sensor, a compact, cylindrical, magnetically operated sensor capable of switching up to 265 Vac/300 Vdc at 10 Watt/VA. The new sensor's diameter of just 5.8 mm (0.228 inches) makes it easy to install into confined spaces in existing structures. It is designed for use with the matching 57022 actuator, which is sold separately. Circuit designers have the flexibility to choose from normally open, normally closed or change-over contacts.

Typical applications for the 59022 Series Firecracker Reed Sensor include:

  • Position/limit sensing for door closures in appliances, smart home automation systems, security systems, metering and industrial equipment.
  • Level sensing for liquid level detection in coffee makers, washing machines and dishwashers.
  • Speed and distance measuring/sensing found in fitness equipment such as treadmills and stationary bicycles.
  • Linear actuators.

The 59022 Series Firecracker Reed Sensor offers these key benefits:

  • Its 25.4 mm x 5.8 mm form factor fits easily into small, confined spaces.
  • Because it is a magnetically operated proximity sensor, installation is quick and easy.
  • Its hermetically sealed contacts are well suited for use in high-moisture and contaminated environments.
  • Because it can operate through non-ferrous materials (such as wood, plastic or aluminum) it offers a non-contact solution that's more aesthetically appealing than push button or lever mechanical-type switches.
  • Normally open, normally closed and change-over contacts options are available, which makes it ideal for battery-powered applications because the contacts do not draw power when in the non-activated state.
  • Excellent for switching micro-controller logic level loads.
  • Custom cable length and connector options make it easy to adapt to customers' specific application requirements. 
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