Limit switches are electromechanical devices used for positioning and control applications in mechanical and systems engineering. They are used to detect presence or absence in areas where physical contact is allowed.
Limit switches can be seen in applications such as in valves where the extension of the valve shaft mechanically trips the limit switch, indicating an open or closed position. Limit switches are also found in applications such as woodworking, plastic injection and packaging in order to monitor the position of moving components.
Limit switches include several different styles of the actuator/operating head. The actuator is the part of the limit switch which comes into contact with the moving object. Actuator/operating heads can be found as pin plungers, levers, roller plungers, roller levers, flexible rods and other configurations.
Certain environment-resistant specifications should be taken into consideration when ordering limit switches. There are several features on limit switches that can make them more suitable for certain environmental conditions such as dust, water, dirt, oil and temperature. This is to aid operation and maintenance, and various wiring specifications.
Limit switches are used to control, monitor and view the position of the valve or to activate other system components.
There are different versions of on/off limit switches in the market. The most common are based on the principle of echanical switches, proximity sensors or potentiometers.
SED has designed and engineered ...
Limitless™ WLS Heavy-Duty Wireless Limit Switches combine the best of MICRO SWITCH™ HDLS heavy-duty limit switches with the latest wireless technology. Limitless™ Series switches have the same mechanical life, temperature ratings, and sealing as standard ...
Hazardous environments demand Honeywell. When conditions are hazardous and performance is critical, Honeywell Sensing and Control delivers exceptional performance.
-Designed specifically ...
Honeywell MICRO SWITCH™ Limit Switches
Limitless leadership. Available with a variety of actuators, electrical specifications, terminations, circuitries and sealing ratings, Honeywell Sensing ...
Product advantages
Compact switch for safety or control applications
Two channel safety ...
Product advantages
Compact switch for safety or control applications in protection class IP 65
Optimized size utilising proven terminal technology
Two ...
Features
EX certification: II 2 EEX d IIC T6
Switch with ...
- Prismatic plastic housing and mini type cover
- Double insulation
- ...
L1K13SOM11 - CLASSIC ...
L3K13SOM10 - PRIS ...
SLZC series (Small and high-precision enclosed switch)
‧ Small, ...
Small Safety Limit Switch (SL4N)Series
- UPgraded Safety Limit Switch
- Lineup includes three contact models with 2NC/1N0 ...
Limit Switch - SL4NS series
‧ Multi-contact, Labor-sowing, Environment-friendly, Next-generation, Safety-door ...
Machine-operated limit switches
for the control and ...
- EKU1-SPR-KFS
EKU series
category: Limit ...
- EKU1-KST
EKU series
category: ...
Class II materials, according to IEC 536, are designed with double ...
switching voltage max. 48 V
switching current 0,3 A
switching ...
switching voltage max. 48 V
switching current 0,5 A
switching ...
switching voltage max. 48 V
switching current 0,5 A
switching ...
Resolver Based PLS - 2500 High Speed PLS
High Speed Programmable Limit Switch - The Series 2500 PLS is a high-speed resolver based Programmable ...
The Series 2000 Rotary Limit Switch is primarily used for machine tools, handling devices, ...
The Series 1980R combines a resolver based signal off of the existing camshaft. Many press operations are now being fitted with automation equipment ...
Limit switches for severe environments
- ...
Crouzet's microswitch range offers a wide variety of switching ratings (0.1 to 20 A), a choice of many different actuators as standard, numerous possibilities for adaptation, NF-cUL approval, ...
The PBX is the latest newcomer to Crouzet's range of microswitches for industrial and railway equipment.
It has been developed and tested in compliance with current standards (EN 60947, DIN 41636 type F, NF EN 50124-1, NFF 16 101/102).
The electrical configuration of this switch is based on a double insulated failsafe circuit (1 NO 1 NC) with two types of contact (Silver ...
High specification Plastic Bodies, Positive opening NC safety contacts to IEC 945-5-1. Unique 3 pole positively operated contacts. Choice of ...
Safety Limit Switches - Types LSPS (Plastic) and LSMM (Metal)
High specification plastic or Heavy Duty Die Cast Metal ...
IDEM has released its HLM-SS fully Stainless Steel 316 Safety Limit Switches.
The switches are designed to be mounted for position sensing of moving applications, e.g ...
LINEAR SWITCH BOXES - SE SERIES
Linear limit ...
OMEGA CONTROL UNITS
Omega control unit combines a compact enclosure with limit ...
Water proof IP65 limit switch box SA _3D series as follows:
-Atex Ex II 3D Ex tD A22 IP65 T85°C
-aluminium heavy duty body and cover die-cromated and Polyester ...
