Limit Switches
A limit switch is a position switch that changes contact position when a moving machine part touches the roller, plunger or lever on its actuator head, signaling to the control circuit that the movement has reached its limit. It is used to detect end of stroke, stop motion or reverse direction on conveyors, elevators, cranes, automatic doors and machine tools. The category includes EMAS limit switches, ABB LS series limit switches, and Isıso TLS and Gwest GLS series limit switches; there are types with metal or plastic housings, roller, adjustable lever, plunger and heads with a blunt end, and 1NO+1NC and 2NO+2NC contacts, as well as crane switches. Select the limit switch by the type of actuator head and the direction from which the object approaches, housing material, contact arrangement, whether it is snap-action or slow-action, and the IP rating the environment requires. A limit switch works by contact and is not an inductive sensor that detects an object without touching it; it needs mechanical force for actuation but does not need a supply voltage.
Products
- Gwest GLS -191R GLS Series Limit Switch — Gwest · SKU: 6800 · TRY 198.12 · In stock
- Siemens 3SE5212-0CC05 Limit Switch Vertical Teflon Plunger Actuated — Siemens · SKU: 3SE5212-0CC05 · TRY 2,304.00 · Made to order
- Siemens 3SE5242-0CC05 Limit Switch Vertical Teflon Plunger Actuated — Siemens · SKU: 3SE5242-0CC05 · TRY 2,131.00 · Made to order
- Siemens 3SE5232-0CC05 Limit Switch Vertical Teflon Plunger Actuated — Siemens · SKU: 3SE5232-0CC05 · TRY 1,700.00 · Made to order
- Siemens 3SE5112-0CH02 Limit Switch Right-Left Plastic Roller (19 mm Diameter) Actuated, Lever Length 27 mm — Siemens · SKU: 3SE5112-0CH02 · TRY 5,256.00 · Made to order
- Siemens 3SE5413-0CC20-1EA2 Limit Switch Vertical Push-Button Actuated — Siemens · SKU: 3SE5413-0CC20-1EA2 · TRY 4,007.00 · Made to order
- Siemens 3SE5212-0CD03 Limit Switch Vertical Plastic Roller (10 mm Diameter) Actuated — Siemens · SKU: 3SE5212-0CD03 · TRY 2,738.00 · Made to order
- Siemens 3SE5112-0CH80 Limit Switch — Siemens · SKU: 3SE5112-0CH80 · TRY 5,044.00 · Made to order
- Siemens 3SE5413-0CC22-1EA2 Limit Switch Vertical Push-Button Actuated — Siemens · SKU: 3SE5413-0CC22-1EA2 · TRY 4,511.00 · Made to order
- Siemens 3SE5132-0CJ60 Limit Switch Adjustable Lever Length (Perforated), Right-Left Plastic Roller (19 mm Diameter) Actuated — Siemens · SKU: 3SE5132-0CJ60 · TRY 3,804.00 · Made to order
- Siemens 3SE5132-0CC03 Limit Switch Vertical Stainless Steel Roller (13 mm Diameter) Actuated — Siemens · SKU: 3SE5132-0CC03 · TRY 2,581.00 · Made to order
- Siemens 3SE5122-0CB01 Limit Switch Vertical Stainless Steel Plunger Actuated — Siemens · SKU: 3SE5122-0CB01 · TRY 3,197.00 · Made to order
- Siemens 3SE5112-0CR01 Limit Switch Coil Spring Actuated — Siemens · SKU: 3SE5112-0CR01 · TRY 3,980.00 · Made to order
- Siemens 3SE5122-0CH01 Limit Switch Right-Left Plastic Roller (19 mm Diameter) Actuated, Lever Length 27 mm — Siemens · SKU: 3SE5122-0CH01 · TRY 4,470.00 · Made to order
- Siemens 3SE5232-0HK21 Limit Switch Right-Left Plastic Roller (19 mm Diameter) Actuated, Lever Length 21 mm — Siemens · SKU: 3SE5232-0HK21 · TRY 2,520.00 · Made to order
- Siemens 3SE5232-0HE10 Limit Switch Plastic Roller (13 mm Diameter) With Lever Actuated — Siemens · SKU: 3SE5232-0HE10 · TRY 2,450.00 · Made to order
- Siemens 3SE5413-0CN20-1EA2 Limit Switch Right-Left Roller Actuated — Siemens · SKU: 3SE5413-0CN20-1EA2 · TRY 4,402.00 · Made to order
- Siemens 3SE5242-0HK21 Limit Switch Right-Left Plastic Roller (19 mm Diameter) Actuated — Siemens · SKU: 3SE5242-0HK21 · TRY 2,956.00 · Made to order
- Siemens 3SE5212-0CK50 Limit Switch Adjustable Lever Length Right-Left Plastic Roller (19 mm Diameter) Actuated — Siemens · SKU: 3SE5212-0CK50 · TRY 3,473.00 · Made to order
- Siemens 3SE5413-0CC21-1EA2 Limit Switch Vertical Adjustable-Level Push-Button Actuated (M12X1) — Siemens · SKU: 3SE5413-0CC21-1EA2 · TRY 4,511.00 · Made to order
- Siemens 3SE5132-0CJ80 Limit Switch Adjustable Lever Length Aluminum Rod (200 mm) Actuated — Siemens · SKU: 3SE5132-0CJ80 · TRY 3,724.00 · Made to order
- Siemens 3SE5112-0CH60 Limit Switch Adjustable Lever Length Right-Left Plastic Roller (19 mm Diameter) Actuated — Siemens · SKU: 3SE5112-0CH60 · TRY 4,950.00 · Made to order
- Siemens 3SE5132-0CR01 Limit Switch Right-Left Plastic Roller (19 mm Diameter) Actuated, Lever Length 27 mm — Siemens · SKU: 3SE5132-0CR01 · TRY 3,312.00 · Made to order
- Siemens 3SE5242-0HD03 Limit Switch Vertical Plastic Roller (10 mm Diameter) Actuated — Siemens · SKU: 3SE5242-0HD03 · TRY 2,582.00 · Made to order
- Siemens 3SE5112-0CC02 Limit Switch Vertical Stainless Steel Plunger Actuated — Siemens · SKU: 3SE5112-0CC02 · TRY 4,201.00 · Made to order
How to choose Limit Switches
A limit switch is a position switch that changes contact position when a moving machine part touches the roller, plunger or lever on its actuator head, signaling to the control circuit that the movement has reached its limit. It is used to detect end of stroke, stop motion or reverse direction on conveyors, elevators, cranes, automatic doors and machine tools.
- Separate sensing, motion control, logic processing and operator interface requirements.
- Select signal type, supply voltage, communication protocol and I/O count for the machine network.
- Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.
Frequently asked questions
What is Limit Switches and where is it used?
A limit switch is a position switch that changes contact position when a moving machine part touches the roller, plunger or lever on its actuator head, signaling to the control circuit that the movement has reached its limit. It is used to detect end of stroke, stop motion or reverse direction on conveyors, elevators, cranes, automatic doors and machine tools.
What should I compare when choosing Limit Switches?
Select the limit switch by the type of actuator head and the direction from which the object approaches, housing material, contact arrangement, whether it is snap-action or slow-action, and the IP rating the environment requires.
Where can I find technical details for Limit Switches products?
A limit switch works by contact and is not an inductive sensor that detects an object without touching it; it needs mechanical force for actuation but does not need a supply voltage.