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Limit Switch（Contact Type：2-Circuit Double Break）
Limit Switch is used to detect the presence or absence of an object and monitor the position of a moving part for example detection of incorrectly set work, loose screws, and check the status a door of machine. They find widespread application across various industries, such as automation systems, food and pharmaceutical industries, and electronics industries. When selecting Limit Switch it is crucial to consider factors such as Detector Shape (e.g., Rod Shape, Plunger Type, Lever Shape (Push) and so on), Environment (General, Cold/Heat Resistant, Water Resistant) Plunger and Lever Shape. These considerations are vital for ensuring the production of high-quality products. We highly recommend reputable brands like OMRON and RS Pro. Take advantage of the convenience of FREE SHIPPING and NO MINIMUM ORDER on Limit Switch and related products. If you have any doubts or require assistance in choosing the right product, our experts are readily available to provide advice and guidance.
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Specification/Dimensions
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Detector Shape
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Main Body Size
- Standard
- Small Type
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Environment
- Standard
- Outdoor Corrosion Resistant
- Cold Resistant
- Heat Resistant
- Hydrogen Gas
- Weather Resistant
- Oil Resistant
- Dust Resistant
- Water Resistant
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Plunger Shape Type
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Number of Plunger Rows
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Roller Lever Shape Type
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Lever Shape Type
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Rod Shape Type
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Contact Type
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Contact Point Type
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Contact Material
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Rated Operating Voltage(V)
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Rated Conductance Current(A)
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Until 31/03/2025
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Until 31/03/2025Two-Circuit Limit Switch [WL-N/WL]
OMRON
A 2-circuit limit switch with multiple types that can be selected according to the operating environment and application.
[Features]
· A variety of head shapes, including a rotational lever type, a plunger type, a flexible rod type and a fork locking lever type.
· Select the best shape from the available actuators to match the movement and shape of the workpiece.
· As well as types for general detection, there are also environmentally-resistant types suitable for use in harsh environments, spatter-resistant types suitable for welding processes, and long-lifespan types suitable for use in high-frequency applications.From: ฿ 554.00 Special Price Days to Ship: 
Same day
Same day
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![Small Safety Limit Switch [D4N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221005138046/221005138046_20201112121441.jpg?$product_view_b$)
Until 31/03/2025
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Until 31/03/2025Small Safety Limit Switch [D4N]
OMRON
Standard safety limit switches. A full range of products provided globally.
[Features]
· Available with the following range of contact configurations: 1NC/1NO, 2NC, 2NC/1NO, 3NC (MBB specification for the throw action).
· Easily replaceable and labor-saving M12 connector types are also available.
· Highly reliable gold-plated contacts used as standard. Can be used with both general loads and micro loads.From: ฿ 376.96 Special Price Days to Ship:
Same day
Same day
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![Small Limit Switch [HL-5000]](//th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/221000559453_001.jpg?$product_view_b$)
Until 30/06/2024
Until 30/06/2024OMRON
Compact limit switch with high practicability in low price. For head, box and cover, an uneven interlocking method is used and thus robustness is maintained.From: ฿ 1,253.00 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
Until 30/06/2024
Until 30/06/2024Two-circuit limit switch long-life type WLM
OMRON
Standard, sensational, heat resistant and corrosion resistant with variety of models
[Features]
· High durability with mechanical durability of 30 million times or more.
· Long service life type suitable to use frequently.
· High durability with improved wear resistance, sliding property in head mechanism part.
· Moreover, improved visibility of setting time by displaying glory of stroke setting scene.
· The contacts are two-circuit double-break switches: The circuit will break without fail thanks to the two-circuit double-break switch.
· An IP67 protective structure: An IP67 compliant structure thanks to its O-ring and/or cover seal.
· Overseas approval corresponding to the machines for export approved by: UL, CSA, TÜV, EN/IEC, CCC.
· Optimum high accuracy type in controlling the position is available in all types: Movement till operation is less (about 5°) but repeatability is two times of standard type.
· Operation display with easy daily check: Operation status can be confirmed by using neon lamp or LED and check and maintenance at the time of starting can be done easily.
· Connector type to reduce man-hours for wiring is available: Reduces the man-hours for wiring. Series of connectors (direct output method, pulley wire method) wherein replacement can be done easily is made.From: ฿ 5,653.00 Special Price Days to Ship:
50 Day(s)
50 Day(s)
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You can add up to 6 items per a category to the compare list.
![Safety Limit Switch [D4B-□N]](//th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/OMR1_221005138091_1.jpg?$product_view_b$)
Until 31/03/2025
Until 31/03/2025OMRON
Robust safety limit switch with metallic housing.
Certified with direct opening mechanism for both slow action and snap action types.
[Features]
· Direct opening mechanism (only at NC contact side) that opens the contact when an abnormality occurs in contact welding, etc.
· Realized a safety lever setting by using a mechanism where the lever is interlocked with the operating position display board.
· Also equipped with proper operation zone display mechanism.
· Single-action switching between left and right operation directions.
· The sealing structure of the head is reinforced to improve sealing properties (TÜV: IEC IP67, UL: NEMA3, 4, 4X, 6P, 13).From: ฿ 1,818.00 Special Price Days to Ship:
Same day
Same day
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You can add up to 6 items per a category to the compare list.
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115435.jpg?$product_view_b$)
Until 31/03/2025
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115436.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115437.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/OMR1_221000559228.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115438.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115439.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115440.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115441.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115442.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115443.jpg?$product_view_b$)
![Compact Heavy Equipment Limit Switch [D4A-□N]](//content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115444.jpg?$product_view_b$)
Until 31/03/2025Compact Heavy Equipment Limit Switch [D4A-□N]
OMRON
Compact heavy equipment limit switch with improved seal, impact-resistance and load-resistance.
[Features]
· Double sealing structure of the rotary shaft has been further reinforced and the gasket full cover system, etc., ensures sealing.
· Models with fluoroelastomer available separately for effective resistance to chemicals.
· A block mount method is adopted to minimize time loss during maintenance.
· Four circuit double-break models available for complex operations.From: ฿ 2,457.00 Special Price Days to Ship:
Same day
Same day
![Small Limit Switch [HL-5000]](http://th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/221000559453_001.jpg?$product_view_b$)
![Safety Limit Switch [D4B-□N]](http://th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/OMR1_221005138091_1.jpg?$product_view_b$)
| Brand |
|---|
| Product Series |
| CAD |
| From |
| Days to Ship |
| Detector Shape |
| Main Body Size |
| Environment |
| Plunger Shape Type |
| Number of Plunger Rows |
| Roller Lever Shape Type |
| Lever Shape Type |
| Rod Shape Type |
| Contact Type |
| Contact Point Type |
| Contact Material |
| Rated Operating Voltage(V) |
| Rated Conductance Current(A) |
You can add up to 6 items per a category to the compare list. ![Two-Circuit Limit Switch [WL-N/WL]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_c/v1/p/cn/product/series/221000559396/221000559396_20201112121128.jpg?$product_view_c$) Until 31/03/2025 ![Two-Circuit Limit Switch [WL-N/WL]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221000559396/221000559396_20201112121128.jpg?$product_view_b$){kind=small} ![Two-Circuit Limit Switch [WL-N/WL]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221000559396/221000559396_20201112121129.jpg?$product_view_b$){kind=small} ![Two-Circuit Limit Switch [WL-N/WL]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221000559396/221000559396_20201112121130.jpg?$product_view_b$){kind=small} | You can add up to 6 items per a category to the compare list. ![Small Safety Limit Switch [D4N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_c/v1/p/cn/product/series/221005138046/221005138046_20201112121441.jpg?$product_view_c$) Until 31/03/2025 ![Small Safety Limit Switch [D4N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221005138046/221005138046_20201112121441.jpg?$product_view_b$){kind=small} ![Small Safety Limit Switch [D4N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221005138046/221005138046_20201112121442.jpg?$product_view_b$){kind=small} ![Small Safety Limit Switch [D4N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221005138046/221005138046_20201112121443.jpg?$product_view_b$){kind=small} ![Small Safety Limit Switch [D4N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/cn/product/series/221005138046/221005138046_20201112121444.jpg?$product_view_b$){kind=small} | You can add up to 6 items per a category to the compare list. ![Small Limit Switch [HL-5000]](http://th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/221000559453_001.jpg?$product_view_c$) Until 30/06/2024 | You can add up to 6 items per a category to the compare list.  Until 30/06/2024 | You can add up to 6 items per a category to the compare list. ![Safety Limit Switch [D4B-□N]](http://th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/OMR1_221005138091_1.jpg?$product_view_c$) Until 31/03/2025 | You can add up to 6 items per a category to the compare list. ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_c/v1/p/jp/product/series/221000559228/221000559228_20210409115435.jpg?$product_view_c$) Until 31/03/2025 ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115435.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115436.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115437.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://th.misumi-ec.com/en/linked/material/mech/OMR1/PHOTO/OMR1_221000559228.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115438.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115439.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115440.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115441.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115442.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115443.jpg?$product_view_b$){kind=small} ![Compact Heavy Equipment Limit Switch [D4A-□N]](http://content.misumi-ec.com/image/upload/f_auto,q_auto,t_product_view_b/v1/p/jp/product/series/221000559228/221000559228_20210409115444.jpg?$product_view_b$){kind=small} | |
| Brand | OMRON | OMRON | OMRON | OMRON | OMRON | OMRON |
| Product Series | ||||||
| CAD |
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| From | ฿ 554.00 Special Price On Sale Until 31/03/2025 | ฿ 376.96 Special Price On Sale Until 31/03/2025 | ฿ 1,253.00 Special Price On Sale Until 30/06/2024 | ฿ 5,653.00 Special Price On Sale Until 30/06/2024 | ฿ 1,818.00 Special Price On Sale Until 31/03/2025 | ฿ 2,457.00 Special Price On Sale Until 31/03/2025 |
| Days to Ship | Same day | Same day | Same day | 50 Day(s) | Same day | Same day |
| Detector Shape | Plunger Type / Roller Lever Type (Rotary) / Rod Shape | Plunger Type / Roller Lever Type (Rotary) / Rod Shape | Plunger Type / Roller Lever Type (Rotary) / Rod Shape | Roller Lever Type (Rotary) | Plunger Type / Roller Lever Type (Rotary) | Plunger Type / Rod Shape / No Lever Type (Knurled Shaft) |
| Main Body Size | Standard | Small Type | Small Type | Standard | Standard | Small Type |
| Environment | Standard / Outdoor Corrosion Resistant / Cold Resistant / Heat Resistant / Hydrogen Gas / Weather Resistant / Oil Resistant / Water Resistant | Standard | Standard | Standard | Standard / Cold Resistant | Standard / Cold Resistant |
| Plunger Shape Type | Top Plunger / Ball Plungers / Roller Plungers / Side Surface Plunger / Side Surface Ball Plunger | Top Plunger / Roller Plungers | Top Plunger / Roller Plungers | - | Top Plunger / Roller Plungers | Top Plunger / Roller Plungers / PerpendiCular Side Roller Plungers |
| Number of Plunger Rows | - | - | - | - | - | - |
| Roller Lever Shape Type | Standard / Fork Lever Lock / Variable Roller Lever / Variable Rod Lever / Spring Rod Lever | Standard / Fork Lever Lock / Variable Roller Lever | Standard / Variable Roller Lever | Standard | Standard / Variable Roller Lever | Spring Rod Lever |
| Lever Shape Type | - | Arm Lever | Lever | - | One Way Roller Horizontal | - |
| Rod Shape Type | Variable Metal Rod / Spring + Metal Rod / Spring + Resin Rod | Spring + Resin Rod | Variable Metal Rod / Spring + Metal Rod | - | - | Spring + Metal Rod / Spring + Resin Rod / All Spring Rod |
| Contact Type | 2-Circuit Double Break | 2-Circuit Double Break | 2-Circuit Double Break | 2-Circuit Double Break | 2-Circuit Double Break | 2-Circuit Double Break |
| Contact Point Type | - | - | - | - | - | - |
| Contact Material | - | - | - | - | - | - |
| Rated Operating Voltage(V) | 30 VDC or Less / DC125V / DC250V / AC100/125V / AC240/250V / More than AC300V | DC125V / DC250V | AC240/250V | DC125V / AC100/125V | 30 VDC or Less / DC125V / DC250V / AC100/125V / AC240/250V / More than AC300V | More than AC300V |
| Rated Conductance Current(A) | 0.1 ～ 20 | 2.5 | 5 | 20 | 10 | 10 |
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Related Categories to Limit Switch
FAQ Limit Switch
- Question: Can the Limit switch be used for doors?
- Answer: Yes, limit switches can be used for door safety functions. In fact, they are commonly used in industries to ensure the safe operation of doors, gates, and access points in automated systems. To use a limit switch for door safety, you would need a "safety limit switch."
There are two main types of safety limit switches suitable for door safety:
Mechanical Safety Limit Switches: These switches have a physical actuator that comes into contact with the door or gate, triggering the switch when the door reaches a certain position. They can be used to detect when the door is fully open or closed.
Non-Contact Safety Limit Switches: Also called "safety interlock switches" or "coded magnet switches," these use non-contact technology to detect the presence or alignment of a magnet on the door. They are more tamper-resistant and are often used in critical safety applications. - Question: What is the purpose of a Limit switch with a long lever?
- Answer: A limit switch with a long lever serves the purpose of detecting the presence, absence, or position of an object with a larger range of movement. The long lever acts as an extension, allowing the switch to respond to changes in position over a greater distance. This type of switch is commonly used in applications where the movement of the object being sensed is not directly aligned with the switch itself.
For example, imagine a conveyor belt where products of varying sizes move along. A limit switch with a long lever could be positioned such that the lever comes into contact with the products. As each product passes by, it engages the lever, causing the switch to activate. The longer lever provides the necessary reach to detect objects that might be positioned farther away from the switch housing.
In simpler terms, a limit switch with a long lever is like having an extended arm that can reach out and touch something that's not right next to it. - Question: How do I connect or install a limit switch?
- Answer: Step by step to install the limit switch
1. Choose Mounting Location: Determine where you want to install the limit switch. Make sure it's strategically placed to sense the desired movement or position.
2. Prepare Mounting Surface: If needed, prepare the surface by drilling holes for mounting screws or bolts. Ensure the surface is clean and flat.
3. Mounting: Attach the limit switch to the mounting surface using screws, bolts, or a bracket provided with the switch. Ensure the switch is securely fixed and aligned properly.
4. Connect Wiring: Refer to the manufacturer's wiring diagram or schematic for guidance. Typically, limit switches have several terminals: common (COM), normally open (NO), and normally closed (NC). Connect wires from your control system to these terminals based on your application's requirements.
5. Wire Connection: Strip the ends of the wires and attach them to the appropriate terminals. Use screw terminals, crimp connectors, or other suitable methods as specified by the switch's manual.
6. Secure Wires: Make sure the wires are properly secured and won't be pinched or pulled when the machine or system operates.
7. Adjust Actuator: If the limit switch uses an actuator (lever, roller, etc.), adjust its position so that it's activated when the desired movement or position is reached.
8. Test the Installation: Carefully test the limit switch by manually triggering its actuator to see if it activates and deactivates correctly. Make any necessary adjustments if it's not functioning as expected.
9. Final Check: Double-check all connections, screws, and adjustments to ensure everything is secure and properly aligned.
10. Power On: Power up the system and observe the limit switch's behavior during regular operation. Confirm that it accurately detects the intended movement or position.
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