59040-4-U - 59040 Series

Series: 59040
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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 59040 Press-Fit Reed Sensor is a small, cylindrical reed sensor 31.0 mm (1.22”) long that presses into a 9.5 mm (.375”) diameter hole with a choice of normally open, normally closed or change-over contacts. It is capable of switching up to 200 Vdc at 10 W Contact rating. Extensive range of sensitivity with specified cable length is available. The housing color is white. It has three crush ribs along the length of the capsule that allow a firm and fixed press-fit. It is well suited for use in a wide range of industrial, appliances, or IoT proximity sensing applications. It functions best with the 57040 actuator.

Features & Benefits:

  • Non-contact switching solution for wet & 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 and 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.
Applications:
  • Security and access control
  • Factory automation
  • Process Equipment
  • Major appliances
  • Small appliances
  • Proximity and limit sensing
     
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Property (Mouseover for details) Value
Switching Power (W) 5
Switching Voltage (V DC) 175
Switching Current (A DC) 0.25
Switching Voltage (V AC) 120
Switching Current (A AC) 0.18
Breakdown Voltage (V DC) 200
Max Contact Resistance (Ω) 0.2
Magnetic Sensitivity (AT) 25 to 30
Nominal Activate Distance (mm) 17
Switch Type B:SPST-NC
Max Operate Time (ms) 3
Max Release Time (ms) 3
Operating Temperature -40° to 105°C

cRUicon CUR_NKCR8_E61760

URicon UR_NKCR2_E61760

pdficon Littelfuse Reed Sensors 59040 datasheet

pdficon Position and Level Sensing in Washing Machines

A most integral appliance in any home is a washing machine. Washing machines have helped made the chore of cleaning clothes quite effortless.
pdficon Reed Switch and Reed Sensor Activation Application Note

Although a reed switch can be activated by placing it inside an electrical coil many reed switches and reed sensors are used for proximity sensing and are activated by a magnet.
pdficon Inductive Load Arc Suppression Application Note

When a reed switch or reed sensor is used to control an inductive device (relay coil solenoid transformer small motor etc.)
pdficon Vibration Testing and Precautions Application Note

Littelfuse tests sinusoidal vibration according to Mil. Std. 202G Method 204D Test Condition G (10 ? 2000 Hz frequency sweep at 30 G or 0.06 inch double amplitude whichever is less).
pdficon Capacitive Loads Application Note

When there is significant capacitance in a reed sensor reed relay or reed switch circuit the peak current and energy switched by the reed contacts should be considered.
pdficon Reed Switch Extended Shock Capabilities Application Note

The maximum shock specifications in the Littelfuse catalog are very conservative for most switches smaller than the DRxxxx type. T
pdficon Rice Cooker Lid Lock Application Note

The position sensing lid lock ensures that the lid is securely locked in place.
pdficon Flow Sensing in Tankless Water Heaters Application Note

Reed switches and sensors are highly effective solutions for flow sensing applications that can be used for detecting the presence of fluid flow in a system or even measure the rate of fluid flow.
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