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Sensors / Encoders > Limit Switches
Limit Switches
Limit switches are one of the most common presence sensing devices used in industrial controls. Activated when an object makes physical contact with the actuator, they provide an electric or pneumatic signal. Choose limit switch type based on environmental factors and available space, then choose actuator style based on the mechanical setup of the application.
Industrial Limit Switches
Category Selection
- Precision Limit Switches
- Stopper Limit Switches
- Schmersal 30mm IEC Limit Switches
- Schmersal 40mm IEC Limit Switches
- Snap Action Micro Limit Switches
- Eaton NEMA Limit Switches
- Plastic Compact Limit Switches
- Metal Compact Limit Switches
- Compact Limit Switches - Halogen Free Cable
- Heavy Duty Metal IEC Limit Switches
- Double-Insulated Plastic IEC Limit Switches
- Miniature Double-insulated Plastic IEC Limit Switches
- Pneumatic Limit Switches
NEMA Limit Switches, Compact, Heavy-Duty IEC, Double-Insulated IEC, and Miniature Limit Switches
- Precision Limit Switches
- Stopper Limit Switches
- Snap Action Micro Limit Switches
- Eaton NEMA Limit Switches
- Compact Limit Switches
- Heavy Duty Metal IEC Limit Switches
- Double Insulated Plastic IEC Limit Switches
- Miniature Double Insulated Plastic IEC Limit Switches
- Pneumatic Limit Switches
Limit Switches Overview
Precision Limit Switches
Precision Touch Limit Switches
- 3 micron or 5 micron accuracy
High Precision Touch and Tool Setter Switches
- 0.5 micron accuracy
Ball Plunger Limit Switches
- 10 micron accuracy
High Temperature Precision Limit Switches
- 10 micron accuracy
High Vacuum Resistance Precision Limit Switches
- 3 and 10 micron accuracy
- Stainless Steel
- IEC IP40 to IP67, depending on model
- 1 million to 10 million cycles mechanical service life (depending on model)
- One set of N.O. / N.C. contacts (depending on model)
- 2 meter cable, 3 meter cable, or 0.5m core wire connection (depending on model)
- 1-year warranty
Stopper Limit Switches
Mini Stopper Precision Limit Switches
Metrol STM series miniature stopper precision limit switches incorporate a mechanical stop along with the limit
switch function, eliminating the need for a separate stop in many applications. With 10 micron repeatability, long
service life, and no temperature drift, these miniature stainless steel switches are ideal for use in precision
indexing/positioning applications.
Stopper Bolt Precision Limit Switches
Metrol stopper bolt precision limit switches incorporate a mechanical stop along with the limit switch function,
eliminating the need for a separate stop in many applications. With 10 micron repeatability, long service life, and
high contact force, these stainless steel switches are ideal for use in precision indexing/positioning applications.
Schmersal 30mm IEC
Limit Switches
Schmersal IEC style 30mm body limit switches offer a compact body and a selection of actuator heads for versatility in sensing needs.
- Zinc alloy or glass-fiber thermoplastic bodies
- 90-degree adjustable head, with levers adjustable to any angle
- Snap-action contacts in a variety of NO/NC configurations
- M20 x 1.5 conduit fitting and a 1/2-inch NPT adapter
Schmersal 40mm IEC
Limit Switches
Schmersal IEC style 40mm body limit switches offer a selection of actuator heads for versatility in sensing needs.
- Aluminum or glass-fiber thermoplastic bodies
- 90-degree adjustable head, with levers adjustable to any angle
- Snap-action contacts in a variety of NO/NC configurations
- M20 x 1.5 conduit fitting and a 1/2-inch NPT adapter
Snap Action Micro Limit Switches
High precision, 15A-rated micro switches available in plunger and lever actuator styles.
- Plunger Series types: pin plunger, spring plunger, and roller plunger actuator
- Lever Series types: lever, hinge lever, and roller lever
- Panel mount options available
- Screw terminals for easy connection
- Suitable for a wide range of operating conditions
- Terminal enclosure available
Eaton NEMA Limit Switches
(F25 Series)
All F25 Series NEMA limit switches consist of three modular, interchangeable, plug-in components: operating head, switch body, and wiring receptacle. Operating heads (side rotary, top and side push, and wobble stick) are mounted on top of the switch body in any of four positions.
- 9 side rotary heads available
- 6 push and 3 wobble heads available
- 90-degree adjustable head
- Die-cast zinc housing for industrial applications
- Fully assembled out of box
- N.O. and N.C. contacts on all limit switch units
- SPDT and DPDT snap action configurations available
- 1/2 inch NPT conduit entrance
- NEMA 3, 3S, 4, 4X, 6, 6P, 13, IP67
Plastic Compact Limit Switches
AEP series compact sized plastic limit switches include a variety of actuator types: plunger, lever, rod and spring actuators.
- Double insulated plastic housing
- 1 N.O. and 1 N.C. contact on all limit switch units
- Compact size with standard 25mm hole spacing
- Epoxy resin-filled for IP67 rating
- Snap-action contacts
Metal Compact Limit Switches
AEM2G series compact limit switches have die cast metal housings that are epoxy resin filled for IP67 rating.
- 35mm wide die-cast metal housings
- 1 N.O. and 1 N.C. contact on all limit switch units
- Compact size with standard 25mm hole spacing
- Wide offering of limit switch actuator styles
- Epoxy resin-filled for IP67 rating
- Both snap-action and slow-make/slow-break contacts are available
Compact Limit Switches - Halogen Free Cable
Halogen free cables are engineered and designed so that emissions during a fire offer low toxicity and low smoke.
- Die-cast metal housings
- 1-meter halogen-free cable
- 1 N.O. and 1 N.C. contact on all limit units
- Compact size with standard 25mm hole spacing
- Epoxy resin-filled for IP67 rating
- Snap-action contacts
Heavy Duty Metal IEC Limit Switches
Heavy-duty metal - the most rugged IEC limit switch around. Our heavy duty IEC limit switches feature the most popular limit switch actuator styles (plungers, short and adjustable levers with rollers, and steel and plastic rods) and a wide variety of cable entry options.
- Die cast aluminum bodies for heavy-duty industrial limit switch applications
- Single and multiple conduit openings save wiring time and money when interconnecting several limit switches
- Conduit openings in 1/2 inch NPT or PG13.5 sizes
- Splined actuator shafts for fine adjustment of limit switch to fit all applications
- Eight different limit switch actuator styles, including roller levers and plungers
- Six interchangeable combinations of contact blocks
Double-Insulated Plastic IEC Limit Switches
ABP series limit switches feature the most popular actuator styles (plungers, short and adjustable levers with rollers, and steel and plastic rods) and a wide variety of cable entry options.
- Electrically-isolated PBT (plastic) bodies for corrosive environments
- Single conduit openings in 1/2 inch NPT or PG13.5 sizes
- Splined actuator shafts for very fine adjustment of limit switch to fit all applications
- Eight different limit switch actuator styles including roller levers, plungers, and wobble sticks
- Six interchangeable combinations of contact blocks
Miniature Double-insulated Plastic IEC Limit Switches
AAP series limit switches feature small bodies for mounting in tight spaces; and the most popular limit switch actuator styles (plungers, short and adjustable levers with rollers, and steel and plastic rods) with a wide variety of cable entry options.
- Electrically-isolated PBT (plastic) bodies for corrosive environments
- Single conduit openings in 1/2 inch NPT or PG13.5 sizes
- Splined actuator shafts for very fine adjustment of limit switch to fit all applications
- Eight different limit switch actuator styles, including roller levers, plungers, and wobble sticks
- Six interchangeable combinations of contact blocks
Pneumatic Limit Switches
NITRA EVP series manual valves function as pneumatic limit switches and are also used with NITRA pneumatic pushbuttons and switches.
- Metal plunger, versions with roller, one-way roller
- Normally open, normally closed, spring return
- Axial ports, side ports
- 5/32" [4mm] push-to-connect ports
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