59001 Series - Miniature D Shape Reed Sensor

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 59001 Reed Sensor is a miniature D shaped cylindrical reed sensor, 13.5mm x 5.0 mm x 4.6 mm (0.591" x 0.197" x 0.181") with a normally open contact. It is capable of switching up to 120 Vac/170 Vdc at 10 W. The 59001 Reed Sensor is available with a range of sensitivity and cable length options. It is well suited for use in a wide range of industrial, appliances, or IoT proximity sensing applications. It functions best with the 57022 actuator. The 57022 Actuator is sold separately.

Features & Benefits: 

  • Miniature D shaped cylindrical reed sensor, 13.5 mm x 5.0 mm x 4.6 mm (0.591" x 0.197" x 0.181") with a normally open contact
  • Non-contact switching solution for wet and harsh environments
  • No leakage current in ‘open’ state−ideal for battery-powered IoT applications
  • Helps implement efficient proximity/access and energy management systems
  • Compact size, easy installation and effective concealment in many applications
  • Hermetically sealed
  • IP67 rated
  • UL and REACH compliant
  • Can operate through non-ferrous materials (for example, wood, plastic, or aluminum)
  • Available in select sensitivities (operating distances)
  • Standard cable configurations; customization options available
  • UL Recognized per UL 508 and CSA C22.2 No.14


  • Security and access control
  • Factory automation
  • Process equipment
  • Major appliances
  • Small appliances
  • Proximity and limit sensing


Access specifications, certifications, check availability and order parts below

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)Switch TypeMax Operate Time (ms)Max Release Time (ms)Operating TemperaturePartner ECAD ModelsStockSamplesCompare
59001-1-S101700.251200.181750.26 to 10A:SPST-NO0.50.2-40° to 105°C59001-1-SCheckOrder
59001-1-T101700.251200.181750.210 to 15A:SPST-NO0.50.2-40° to 105°C59001-1-TCheckOrder
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