Reed Sensors Datasheet
59156 Series
Subminiature Flange Mount Sensor
Description
The 59156 is a subminiature flange mounting reed sensor
12.70mm x 9.00mm x 3.00mm ( 0.500’’ x 0.354’’ x 0.118’’) with
normally open contacts. The case design enables mounting with
non-magnetic M2 screw at 0.1 Nm torque maximum or adhesive
mounting. The wires exit from the left-hand side, see Drawing 2.
It is also available with right-hand exit, see 59155 series.
The 59156 is capable of switching up to 120Vac/170Vdc at 10VA.
It is well suited for use in a wide range of industrial, appliances, or
IoT proximity sensing applications.
The 59156 series functions best with the matching actuator
57155-000.
Features and Benefits
■ Smallest flange mount type
reed sensor in the market
■ Can operate through
non-ferrous materials (for
example, wood, plastic or
aluminium)
Dimensions
Dimensions in mm (inch)
Tolerances are +/- 0.25 (0.010) unless otherwise noted.
■ Non-contact switching
solution for wet & harsh
environments
Actuator (sold separately)
■ Helps implement efficient
proximity/access and energy
management systems
3.00
(.118)
12.70
(.500)
■ Housing design for optimum
adjustability
■ Easy installation and effective
concealment in many
applications
■ Available in select sensitivities
(operating distances)
Actuator
■ Standard cable
configurations; customization
options available
■ UL Recognized per UL 508
and CSA C22.2 No. 14
1.90
(.075)
8.00
(.315)
■ Hermetically sealed, IP67
rated; REACH compliant
■ No leakage current in ‘open’
state−ideal for battery
2.20x2.50 Typ.
Slot (.087x.098)
powered IoT applications
Sensor (Two-wire version)
12.70
(.500)
3.00
(.118)
(Excluding Encapsulant)
Applications
■ Security and access control
Sensor
■ Major appliances
■ Factory automation
■ Small appliances
■ Process equipment
■ Proximity and limit sensing
1.80
(.071)
8.00
(.315)
2.20x2.50 Typ.
Slot (.087x.098)
Agency Approvals
Agency
Agency File Number
Schematics
Switch Type
Black
Black
E61760
1
Note: Contact Littelfuse for specific agency approval ratings.
© 2023 Littelfuse, Inc.
Specifications are subject to change without notice.
1
Revised: GD. 05/09/23