Limit Switches
2.0 Introduction
E47 Precision Switch
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Technical Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-2
Product Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-3
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2.1 E47 Precision Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-6
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-7
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2.2 Compact Prewired Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-15
Compact Prewired Switch
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-16
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2.3 LS-Titan Miniature DIN Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-21
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-23
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2.4 E49 Mini Metal Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-43
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-44
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2.5 E49 Compact Metal Switches
LS-Titan Miniature DIN Switch
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-49
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-50
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2.6 E50 Heavy-Duty Plug-In Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-54
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-55
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2.7 E50 Heavy-Duty Factory Sealed 6P+ Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-68
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-69
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E49 Compact Metal Switch
2.8 Operators
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-80
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-81
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2.9 Non Plug-In Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-89
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-90
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2.10 Hazardous Location Limit Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-92
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-93
Heavy-Duty Factory Sealed
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6P+ Switch
2.11 Special Purpose Limit Switches
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Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-96
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V8-T2-97
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Unless otherwise noted, the products contained in this section should not
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be used for functional safety applications. These products were not designed
or tested to IEC 60947-5-3 or recommended for functional safety.
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Learn
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Online
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For Customer Service in the U.S. call 1-877-ETN CARE (386-2273),
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in Canada call 1-800-268-3578.
For Application Assistance in the U.S. and Canada
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call 1-800-426-9184.
Volume 8Sensing Solutions CA08100010EAugust 2015 www.eaton.com V8-T2-1Limit Switches
2.0
Introduction
Technical Reference
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Limit Switches
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Mechanical Limit Switches Limit Switches offer high Limit switches contain the
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are contact sensors widely precision in terms of accuracy following major components.
used for detecting the and repeatability. This is These may be modular or part
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presence or position of primarily due to the fact that of a single-piece switch.
objects in industrial they make direct contact
applications. with the target. When an
2 Limit Switch Components
object contacts the limit
switch lever (or plunger) Actuator/
2 Switch
Operating
the lever moves a pre-travel
Body
Head
distance to the operating
Actuator/
2
point where the contacts are Operating
Head
tripped. Movement of the
lever beyond this point is
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called the over-travel.
Lever Type Actuator
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Pre-travel
2 Operating
Initial Position
Point
Over-travel
2
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Receptacle/
Reset Point
Terminals
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Switch
Body
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Differential
Actuator Terminals
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This is the part of the switch The terminals are the point of
that contacts the target. connection for the wiring.
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Typical actuators are levers These terminals may be on
Initial Position
and plungers. Several styles the body itself, or housed in a
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Pre-travel
are available, see Sensor removable receptacle. The
Reset Point
Differential
Learning Course, Page limit switch may also come
Operating Point
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Over-travel V8-T12-4, for more equipped with a factory
Final Position
information. installed cable or pin-
connector.
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Switch Body
This part contains the
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electrical contact mechanism.
Refer to Sensor Learning Course, Page V8-T12-4, for a
For complete information on
complete description of limit switch terminology.
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electrical outputs, see Sensor
Learning Course, Page
2 V8-T12-4.
V8-T2-2 Volume 8Sensing Solutions CA08100010EAugust 2015 www.eaton.com