Littelfuse – Compact reed sensor offers various contact options

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The 59022 Firecracker from Littelfuse is a cylindrical reed sensor available with a choice of Normally Open (NO), Normally Closed (NC) or Change-Over (CO) contacts.

A magnetically-operated proximity sensor with hermetically-sealed contacts, the 59022 operates through non-ferrous materials such as wood, plastic or aluminium. Its magnetic principle of operation makes it well suited to use in moist or contaminated environments.

Compact, this reed sensor is 25.4mm long and has a diameter of 5.8mm: it fits into small, confined spaces and is easy to install. It is also ideal for battery-powered applications as the contacts draw no current when in the non-activated state.

The 59022 series is available with a range of sensitivity and cable-length options. It functions best with the Littelfuse 57022 actuator.

FEATURES

  • Reed contacts last for millions of operating cycles under microcontroller logic-level loads
  • Customer-defined sensitivity options
  • Custom cable length and connector options available
  • 0.2Ω maximum contact resistance

APPLICATIONS

  • Position and limit sensing
  • Security equipment
  • Level sensing
  • Linear actuators
Part NumberSwitching Power (W)Switching Voltage (V DC)Switching Current (A DC)Switching Voltage (V AC)Switching Current (A AC)Breakdown Voltage (V DC)Magnetic Sensitivity (AT)Nominal Activate Distance (mm)
59022-1-S102000.51400.3525012 to 189.6
59022-1-T102000.51400.3525017 to 237
59022-1-U102000.51400.3525022 to 285
59022-3-S51750.251200.1820015 to 209.3
59022-3-T51750.251200.1820020 to 257.5
59022-3-U51750.251200.1820025 to 306.5
59022-4-S51750.251200.1820015 to 209.3
59022-4-T51750.251200.1820020 to 257.5
59022-4-U51750.251200.1820025 to 306.5
Switch Type
A:SPST-NO
A:SPST-NO
A:SPST-NO
C: SPDT-CO
C: SPDT-CO
C: SPDT-CO
B:SPST-NC
B:SPST-NC
B:SPST-NC

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