littelfuse.com© 2015 Littelfuse Revised: 11/02/15
Specifications are subject to change without notice.
59251 Seating Occupancy Reed Switch Sensor
Description
The 59251 is a magnetically operated push button sensor with simple push fit
clip mounting. It has a large integral dome and it’s normally open contacts
actuate when the dome is depressed. It can switch up to 140Vac/200Vdc at
10W. The 59251 has a large integral dome for load distribution and neoprene
boot for environmental protection. It has choice of various cable lengths and
connector options.
Reed Sensors
Features
• Magnetically operated
position sensor
• Simple push fit mounting
• Operates when plunger is
depressed
• Choice of cable length
• Choice of connector
• Large integral dome
Benefits
• Robust construction makes this
sensor well suited to harsh
environments
• Integral neoprene boot provides
protection from severe
environments
• No standby power required
• Hermetically sealed, magnetically
operated contacts give excellent
life and reliabilty
Applications
• Seat occupancy sensing
• Position and limit sensing
Activation (without boot)
Dimensions
Dimensions in mm (inch)
Push Button Sensor > 59251
Operate Distance d1 5.5mm (.217) max.
Release
Distance d2 1.5mm (.059) min.
Rest Position
Release
Operate
d1
88.90
(3.500)
1
2.75
(69.85)
10.00
Cable Length Option±(.390)
Ø66.0
(2.600)
Ø8.13
(.320)
17.27
(.680)
16.00
(.630)
24.38
(.960)
6.35
(.250)
23.88
(.940)
