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Limit switches with a plunger actuator activate when an object or mechanism depresses the plunger. These actuators work well to detect minuscule machine motion, available in types ranging from high-precision touch to heavy-duty IEC and NEMA-rated switches.
Limit Switches with a Plunger Actuator
Category Selection
Limit switches with a plunger-style actuator use the physical movement of a plunger to control the open/closed state of an electrical switch. These actuators detect minuscule machine motion well and offer a smaller form factor than most rotary lever-type actuators. Care must be taken with the tooling to prevent damage to the plunger.
For part listings and specifications, go to Shop Now
Precision Limit Switches
Precision limit switches are ultra-precise mechanical limit switches with a repeatability down to 0.5 microns (µm) depending on the model. Their tiny size allows them to be mounted in extremely tight locations.
- Stainless steel construction
- Models from Metrol with a diameter range from 4 to 16mm
- 23x38x18mm, 27x38x18mm, and 41x45x25mm tool setter switches for blade positioning wear detection, and breakage
- One set of N.O. / N.C. contacts (depending on model)
- 2- or 3-meter cable, or 0.5m core wire connection (depending on model)
- IP40, IP65, or IP67 protection rating (depending on model)
Starting at
$46.00
(CSFN105A-H6X)
Stopper Limit Switches
Precision stopper limit switches incorporate a mechanical stop along with the limit switch function, eliminating the need for a separate stop in many applications.
- Stainless steel construction
- Models from Metrol with a diameter range from 6 to 11mm
- Requires higher contact force ideal for indexing/positioning applications
- 10 micron (µm) repeat accuracy
- No movement differential
- No temperature drift
- Operating temperature up to 200°C on select models
- 0.5m core wire or 2m integrated cable connection
- IP44, IP65, or IP67 protection rating (depending on model)
Starting at
$47.50
(STM13A)
Micro Limit Switches
Affordable micro limit switches with metal plungers offer reliability and durability while being one of the most inexpensive limit switches in the electronics market.
- High precision 15A-rated micro switches from IDEM
- Panel mount option available
- Screw terminals for easy connection
- Suitable for a wide range of operating conditions
Starting at
$10.50
(176101-1)
30mm IEC Limit Switches
Limit switches designed to the European IEC standard are typically smaller and less expensive than NEMA devices but are application-specific and require a high degree of detail for the selection process. These 30mm body limit switches offer a compact body suitable for use in tight spaces.
- 90-degree adjustable head
- Models from AutomationDirect and Schmersal with die-cast zinc or double-insulated thermoplastic enclosures
- Metal or plastic plungers
- Variety of N.O./N.C. configurations
- Positive opening N.C. contacts on all models
- ½" NPT conduit entries (may include adapter) or 5-pin M12 quick-disconnect
- IP65, IP66, or IP67 protection rating (depending on model)
Starting at
$9.50
(AAP2T10Z11)
40mm IEC Limit Switches
Standard 40mm body IEC limit switches are available with durable metal housings or non-metal bodies suitable for corrosive environments.
- 90-degree adjustable head
- Models from AutomationDirect and Schmersal with die-cast aluminum or double-insulated thermoplastic enclosures
- Metal, plastic, or stainless-steel plungers
- Variety of N.O./N.C. configurations
- Positive opening N.C. contacts on all models
- M20 x 1.5 with ½" NPT adapter, ½" NPT or PG13.5 conduit entries
- IP65, IP66, or IP67 protection rating (depending on model)
Starting at
$21.00
(ABM1E11Z11)
65mm IEC Limit Switches
Heavy-duty 65mm IEC limit switches feature a rugged die-cast aluminum body with three conduit openings that save time and money when interconnecting multiple limit switches.
- 90-degree adjustable head
- Conduit openings in 1/2" NPT or PG13.5
- Models from AutomationDirect with stainless steel plungers
- Variety of N.O./N.C. configurations
- IP66 protection rating
Starting at
$46.00
(ABM5E11Z11)
Compact Limit Switches
Newest Additions!
- Schmersal compact limit switches
Compact limit switches are suitable for a variety of applications, their small size allowing them to easily be used in confined spaces.
- Models from AutomationDirect with double insulated plastic or die-cast metal housings
- Zinc die-cast switches from Schmersal with 45-degree adjustable head and thermoplastic housing
- Select models offer halogen free cables
- Models with metal or plastic plungers
- M12 quick disconnect or pigtail connection (depending on model)
- 1 N.O. and 1 N.C. contact on all units
- IP66/67 or IP67 protection rating (depending on model)
Starting at
$16.00
(AEP2G11Z11-1)
NEMA Limit Switches
Limit switches designed to the North American NEMA standard are intentionally oversized with a safety factor beyond their design ratings. NEMA devices are typically larger, more versatile, and easier to select than IEC devices, but are also more expensive. These robust Eaton F25 series limit switches with metal plungers consist of three modular, interchangeable, plug-in components: operating head, switch body, and wiring receptacle.
- 90-degree adjustable head
- Models from Eaton with die-cast zinc housings
- N.O. and N.C. contacts on all limit switch units
- SPDT and DPDT snap action configurations available
- NEMA A600 R300 contact ratings
- ½" NPT conduit entrance
- NEMA 3, 3S, 4, 4X, 6, 6P, 13, IP67
Starting at
$146.00
(F25ATP1)
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