Limit switches are essential components in automated systems, acting as safety devices or signaling mechanisms. Selecting the correct limit switch ensures reliable operation, prevents damage to equipment, and maintains workplace safety. Understanding key features will help you make an informed purchase for your specific application.
- KW12-3 Roller Lever Arm Micro Limit Switch, Normally Open and Close Diamension: 20 x 10.5 x 6.5mm (L x W x H)
- Contact spacing is small,short stroke action,according to the power of small,fast-break.
- Rated voltage: AC 125V-250V; Current rating: 5A
- Application:Apply in A computer mouse, car mouse, automobile electronic products, communications equipment, military products, test instrument, gas water heater, gas burner, small home appliance, microwave oven, electric rice cooker, floating ball...
- -Package Includes:30 Pcs× AC 2A 125V 3Pin SPDT Limit Micro Switch Long Hinge Lever
- -Size of the Swich: 12.6× 6.5× 5.7mm/ 0.49× 0.26× 0.22in ,Size of Lever Arm: 13.5 x 4mm/ 0.53× 0.16in (L*W)
- -Product Name: Micro Switch;Contact Type: SPDT;Voltage and Current: AC 125V 2A;Quantity of Pins: 3 Pins Action Type: Momentary Material: Plastic and metal Color: Black and white
- -Excellent touch switches,Pin-type package with plastic to prevent infiltration of welding pine fragrance.long service life. Life expectancy:More than 500000（Life expectancy at switch testing machine for a continuous period of work,operating at...
- Material: plastic and metal,Every switch has passed the qualified test. If you have any quality problems, please contact us and we will provide you with satisfactory after-sales service.
- Rating: 15A, 1/2HP, 125 250VAC; 0.6A, 125VDC; 0.3A, 250VDC
- Actuator Type: Long Hinge Lever; Switch Type:Momentary; Contact Type: SPDT 1NO 1NC
- Compact size, high sensitivity and short operating stroke, small pressing force, quick connect or disconnect. Durable and reliable material construction, long service life.
- The mini tact switches are widely used in automobile electronic products, communication equipment, test instrument, small home appliance such as audio, toys, microwave oven, electric rice cooker, and other automatic equipment.
- Package Content: 10 x Micro Limit Switches
- Highly Adjustable Actuation: Features an extendable rotary lever arm with a ±90° operating angle. The adjustable length allows you to easily customize the actuation point, while the smooth steel roller ensures low friction and high precision
- Momentary Snap Action: Engineered for reliability, the momentary mechanism ensures immediate contact reset, perfect for position monitoring and safety interlocking
- Reliable 1NO + 1NC Circuit: Features a 4-terminal, 1NO + 1NC double-break configuration with silver contacts for versatile wiring. Electrical ratings: Ui: 380V, Ith: 10A; AC-15 (Ue: 250V, Ie: 1.5A)
- Heavy-Duty IP66 Housing: Robust die-cast aluminum alloy enclosure with IP66 waterproof rating. Provides superior protection against heavy dust, oil, and high-pressure water in harsh environments
- Universal Integration: Standard mounting footprint with a secure, sealed cable gland. Ideal replacement switch for CNC machines, packaging equipment, and industrial automation
- Product name : mini limit switch; model no. : me8108; actuator action : Momentary
- Actuator Type : rotary adjustable lever arm with roller; contact configuration : NC + NO (dpdt); rated Voltage : AC 250V 5A, dc 115V 0.4A
- Roller dimension : 18 x 7Mm/0.71" x 0.2"(D*t); lever arm length : 9.2Cm/3.6"; fixing thread diameter : 4.5Mm/0.18
- Total size : 129 x 28x 50Mm/5.1"X 1.1 inch x 2 inch (l*w*h); mounting size : 56 x 21Mm/2.2" x 0.8 inch (l*w); material : rubber, plastic & metal
- Excellent quality, preferential price, bring you the best shopping experience. Package Content : 2 x Limit Switch
- Product name : mini limit switch; model no. : ME-8108; actuator action : Momentary
- Actuator Type : rotary adjustable lever arm with roller; contact configuration : NC + NO (dpdt); rated Voltage : AC 250V 5A, dc 115V 0.4A
- Roller dimension : 18 x 7Mm/0.71" x 0.2"(D*t); lever arm length : 9.2Cm/3.6"; fixing thread diameter : 4.5Mm/0.18
- Total size : 129 x 28x 50Mm/5.1"X 1.1 inch x 2 inch (l*w*h); mounting size : 56 x 21Mm/2.2" x 0.8 inch (l*w); material : rubber, plastic & metal
- Excellent quality, preferential price, bring you the best shopping experience. Package Content : 4 x Limit Switch
- DIE-CAST ROLLER LEVER: Features a heavy-duty standard roller arm for conveyor baffles, manipulator limit, and CNC industrial automation
- HIGH-PRECISION SENSING: Equipped with 1NO + 1NC (SPDT) contact configuration for rapid, accurate circuit switching in high-frequency control
- IP67 WATERPROOF & OIL-PROOF: Fully sealed housing with a protective sleeve offers superior resistance to water, oil, and dust in harsh environments
- 5A CONTROL CIRCUIT SWITCHING: Rated for 5A 250VAC to reliably handle safety interlock functions and industrial automation control systems
- PRE-WIRED 3-METER CABLE: Includes a 3m (9.8ft) pre-wired lead to greatly simplify field installation and provide flexibility in positioning
- Limit Switches Type: SPDT 3 Pin limit switch, 1 NO 1 NC design, rating: 6A 12V DC or 5A 250V / 120V AC.
- Removable Lever: Micro switch with lever design, different from other microswitches, the lever of this microswitch is removable, you can remove or change the lever according to your own needs.
- Waterproof: This lever switch is IP67 waterproof design, which makes the micro switch become much safer when be used under different kind of environments.
- Pre-wired: This micro on off switch is pre-wired design, which saves much energy and time to solder the switch, can be directly connected into the systems.
- Application: Due to its waterproof design, it will handle both indoor and outdoor use, suitable for cnc, household appliances, DIY appliances, etc.
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Last update on 2026-09-02 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Limit Switches
Types of Limit Switches
Limit switches come in various forms, each suited for different environments and operational needs. Roller lever types are common for detecting the position of moving parts. Plunger types offer direct linear actuation, ideal for precise end-of-travel detection. Cat whisker or rod lever types provide flexibility in actuation direction. Waterproof or heavy-duty models are available for harsh industrial settings.
Key Specifications to Consider
When choosing a limit switch, several specifications are crucial. Actuator type dictates how the switch is triggered. Contact configuration (e.g., SPDT, DPDT) determines the number of circuits and how they are switched. Electrical rating (voltage and amperage) must match the load it will control. Environmental sealing (IP rating) is vital for protection against dust and water. Finally, consider the mounting style and mechanical life expectancy for long-term reliability.
Installation and Safety
Proper installation is paramount for the safe and effective operation of any limit switch. Always ensure the switch is securely mounted and aligned correctly with the actuating mechanism. Electrical connections should be made by a qualified electrician, adhering to all local codes and safety standards. Verify that the switch's intended function (e.g., normally open, normally closed) aligns with the safety requirements of the machinery it controls.
Applications
Limit switches find widespread use across numerous industries. They are commonly employed in manufacturing for controlling conveyor belts, machine tools, and robotic arms. In building automation, they can be used in elevators or automated doors. They also serve critical safety functions in industrial machinery to prevent over-travel or collisions.