59090_V01 LITTELFUSE | Alldatasheet
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Technical content
© 2025 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 12/04/25
59090 Series
The 59090 is a robust reed vane sensor with integral actuator magnet. It’s actuation occurs when a suitable low carbon steel vane passes through the slot between the magnet and switch. It has different contact types such as normally closed, high voltage normally closed and changeover. It is capable of switching up to 265Vac/300Vdc at 10VA. It is ideally suited to position and limit sensing, security, linear actuator, industrial process control and shaft rotation. It is also suited for heavy duty applications such as off-road and heavy vehicles and farm machinery. ■ Sensor and magnet contained in single housing ■ Sensor operates when ferrous vane passes through slot ■ Normally closed standard ■ Choice of cable length and connector ■ Hermetically sealed, magnetically operated contacts continue to operate long after optical and other technologies fail due to contamination ■ Quick and reliable single screw mounting with location feature ■ No standby power requirement ■ Position and limit sensing ■ Security system switch ■ Linear actuators ■ Industrial process control ■ Shaft rotation sensing ■ Off-Highway or Agriculture equipment compatible Dimensions 32.25±0.25 (1.27±.010) 5.75±0.25 (0.22±.010) Ø4.175±0.075 (0.16±.003) 23.25 (0.915) 32.50±0.25 (1.28±.010) 6.35 NOM. (0.250) 300±10mm (11.81±.394) 24.25 (0.955) Ø6.20/6.00 (0.244/0.236) Ø6.10±0.10 (0.24±.003) 10.00 (0.394) 5.25±0.25 (0.20±.010) 11.75±0.25 (0.46±.010) 10.00±0.25 (0.40±.010) Features & Benefits
Applications
Description
Dimensions in mm (inch)
© 2025 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 12/04/25 Contact Type Normally Closed Change Over Normally Open Switch Type 4 3 1 Contact Rating 1 VA/Watt - max. 10 5 5 Voltage 4 Switching 2 Breakdown 3 Vdc - max. Vac - max. Vdc - min. 200 140 250 175 120 200 175 120 200 Current 4 Switching 2 Carry Adc - max. Aac - max. Adc - max. 0.5 0.35 1.2 0.25 0.18 1.50 0.25 0.18 1.50 Resistance 5 Contact, Initial Insulation Ω - max. Ω - min. 0.3 1010 0.100 109 0.100 109 Capacitance Contact pF - typ. 0.3 1 1 Temperature Operating °C -40 to +105 -40 to +125 -40 to +125 Temperature Storage °C -65 to +125 -65 to +125 Product Characteristics Operate Time 6 ms - max. 1.0 0.7 0.7 Release Time 6 ms - max. 1.0 1.0 1.0 Shock 7 11ms 1⁄2 sine G - max. 100 50 50 Vibration 7 50-2000 Hz G - max. 30 30 30 Notes: 1. Contact rating - Product of the switching voltage and current should never exceed the wattage rating. Contact Littelfuse for additional load/life information. 2. When switching inductive and/or capacitive loads, the effects of transient voltages and/or currents should be considered. Refer to Application Notes AN108A and AN107 for details. 3. Breakdown Voltage - per MIL-STD-202, Method 301. 4. Electrical Load Life Expectancy - Contact Littelfuse with voltage, current values along with type of load. 5. This resistance value is for 11.81mm wire length. Resistance changes when wire lengthens. 6. Operate (including bounce)/Release Time - per EIA/NARM RS-421-A, diode suppressed coil (Coil II). 7. Shock and Vibration - per EIA/NARM RS-421-A and MIL-STD-202. 8. For custom modifications to the wire length or size, or adding a special connector, please contact Littelfuse. Select Option Switch Type Activation Distance mm (inch) Average De-Activation Distance mm (inch) Average 1 Normally Open 0.81 0.81
3 Change Over - -
4 Normally Closed 0.71 0.95 Schematics Switch Type Black Black Black Blue White Black Black 3.00 (0.12) 35.00 (1.40) Distance20.00 (0.80) Activate (Contacts Open) Vane Direction Vane Direction De-Activate (Contacts Close) Electrical Ratings Activation
© 2025 Littelfuse, Inc. Specifications are subject to change without notice. Revised: VL 12/04/25 Packaging Option Packaging Specification Quantity Quantity & Packaging Code Taping Width Bulk Bulk 500 N/A N/A Part Numbering System Wire Type: 20AWG 7/28 TXL 125C SAE J1128 Select Option Cable Length mm (inch) 02 300 (11.81) 05 1000(39.37) Termination Options Select Option (Two-wire versions illustrated) A Tinned leads (6.4±0.76)mm Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimier-electronics. Cable Length Options T ermination Specification Packaging Cable Type: 22AWG 3-Conductor UL1569 Select Option Cable Length mm (inch) 12 300(11.81) 15 1000(39.37) 59090 - 00 - 02 - X Series Lead Length and Type 02,05,12,15 Type 1 = Normally open 3 = Change Over 4 = Normally Closed Sensitivity