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Limit Switch

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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Brand	OMRON (8)
CAD	2D 3D
Days to Ship	All Same day 1 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less Others

8 items

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Small Safety Door Switch / Slide Key Unit [D4NS/D4NS-SK]

OMRON

Next generation safety door switch supporting multi-contact, man-hours saving and micro load

[Features]
· As regards the contact structure, in addition of the conventional 1NC/1NO, 2NC, three type of 2NC/1NO, 3NC are available.
· M12 connector type easy to replace and saving man-hours is also released.
· Standardized au clad contact with high contact reliability.
· Supports both i.e. general load and micro load.
· Metallic head variation

CAD ：: 2D / 3D

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)
Others	Small Type	Standard / Cold Resistant	-	-	-	-	-	Mutually Insulated Double Throw	-	-	DC125V / DC250V	2.5

From: ₹ 2,419.13
Days to Ship: Same day or more

Same day or more

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Small Solenoid Lock / Safety Door Switch [D4SL-N]

OMRON

General-purpose enclosed switch with high shut-off capacity and high durability
[Features]
· ZE, ZV, and ZV2 types have built-in Z type general-purpose basic switch.
· Highly durable and has a large shutoff capacity.
· There are three types of mounting methods: side, bottom and side diagonal, as well as abundant actuator types.
· Connecting is easy since the terminal of the built-in switch is on the front when the cover is removed.
· Models with ground terminals support CE Marking.
· UL/CSA/CCC certified (contact the manufacturer for the certification format).

CAD ：: 2D / 3D

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)
Others	Small Type	Standard	-	-	-	-	-	Mutually Insulated Double Throw	-	-	DC125V	1

From: ₹ 5,849.00
Days to Ship: Same day or more

Same day or more

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Solenoid Lock / Safety Door Switch / Slide Key Unit [D4JL/D4JL-SK40]

OMRON

Lock Strength 3,000 N
[Features]
· Various monitoring patterns can be used thanks to 2 circuits + 2 contacts in the safety circuit.
· It uses gold clad contacts as standard and supports both general load and micro load. The trap key type helps avoid the danger of being left behind within the fence.
· A rear release button type that allows unlocking from the inside and egress even when locked within the fence.
· Protection degree IP67.

CAD ：: 2D / 3D

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)
Others	Standard	Standard	-	-	-	-	-	Mutually Insulated Double Throw	-	-	DC125V / DC250V / AC100/125V / AC240/250V	10

From: ₹ 15,350.20
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Safety Door Switch [D4BS]

OMRON

Blocks the control circuit by directly opening the contact by using the operation key only used to open the protective door of machine tools

[Features]
· Approved by EN (TÜT) compliant to CE marking.
· Approved by UL, CSA.
· Direct opening of contact of switch at the time of opening protective cover by using the direct opening operation mechanism (only at NC contact side).
· Approval of EN standard of direct opening operation is shown by mark on the switch.
· Prevents error operation and fake operation by using exclusive operation key.
· A wide temperature range of -40 to+80°C.
· The protective structure of switch box is approved by IP67 (EN60947-5-1).

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)
Others	Standard	Standard / Cold Resistant	-	-	-	-	-	Mutually Insulated Double Throw	-	-	AC100/125V / More than AC300V	10

From: ₹ 391.00
Days to Ship: Same day or more

Same day or more

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Slim Type Safety / Door Switch [D4GS-N]

OMRON

[Features]
· IP67 compliant thin door switch.
· Slim type with 17 mm width (3 contacts).
· Possible to use on front or back surface due to reversible structure.
· Built-in switch available with 2 contacts and 3 contacts.
· Operation key uses a structure to absorb vibration and shocks using rubber in fitting hole.
· Protective structure IP67

CAD ：: 3D

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)
Others	Standard	Standard	-	-	-	-	-	Mutually Insulated Double Throw	-	-	DC125V / DC250V	2.5

From: ₹ 636.00
Days to Ship: Same day or more

Same day or more

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Small safety door hinge door switch

OMRON

Compact safety hinge door switch made up of resin and supporting reduction in space of machine

CAD ：: 3D

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)
Others	Small Type	Standard / Cold Resistant	-	-	-	-	-	Mutually Insulated Double Throw	-	-	DC125V / DC250V	2.5

From: ₹ 4,446.96
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Solenoid Lock / Safety Door Switch [D4BL]

OMRON

After the cutting tool stops due to the inertia of the machine, unlock the protective cover using the controller signal, pushbutton switch, etc.
[Features]
· The mechanical lock automatically engages when the operation key is inserted. The mechanism releases the lock only when voltage is applied to the solenoid, realizing high safety.
· It has acquired EN (TÜV) Standards compatible with CE Marking.
· UL/CSA/CCC certified.
· The direct circuit opening mechanism (NC contact side only) is used to open the switch contacts when opening the protective cover. The direct circuit opening certification by EN standards is displayed on the switch cover.
· The release key handles maintenance power outages (power supply failures).
· The main body is made of robust and strong aluminum die-cast, and the inside of the box has protection degree IP67, UL, CSA Type 6P, 13.
· Also equipped with two conduit ports in horizontal and vertical directions.
· A series of display unit types that show operation status at a glance and adjustable operation keys that support double doors.
· By changing the direction of the head in 4 directions, the operation key can be inserted in 4 directions.

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)
Others	Standard	Standard	-	-	-	-	-	Mutually Insulated Double Throw	-	-	AC100/125V / AC240/250V	10

From: ₹ 20,558.98
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Small Enclosed Switch VE

OMRON

[Features]
· Compact and light weight seal switch.
· Excellent dust proof and mechanically strong V type compact basic switch by sealing it in die-cast case.
· In case of cams/arms types and cams/roller arms type, the position of arm can be set to 360° random position.

CAD ：: 2D

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)
Others	Small Type	Standard / Oil Resistant / Dust Resistant	-	-	Standard	Lever / Arm Lever	-	Single Pole Double Throw	-	-	AC240/250V	10

From: ₹ 2,851.19
Days to Ship: 5 Day(s) or more

5 Day(s) or more


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.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON	OMRON
Product Series	Small Safety Door Switch / Slide Key Unit [D4NS/D4NS-SK]	Small Solenoid Lock / Safety Door Switch [D4SL-N]	Solenoid Lock / Safety Door Switch / Slide Key Unit [D4JL/D4JL-SK40]	Safety Door Switch [D4BS]	Slim Type Safety / Door Switch [D4GS-N]	Small safety door hinge door switch	Solenoid Lock / Safety Door Switch [D4BL]	Small Enclosed Switch VE
CAD	2D / 3D	2D / 3D	2D / 3D		3D	3D		2D
From	₹ 2,419.13	₹ 5,849.00	₹ 15,350.20	₹ 391.00	₹ 636.00	₹ 4,446.96	₹ 20,558.98	₹ 2,851.19
Days to Ship	Same day or more	Same day or more	5 Day(s) or more	Same day or more	Same day or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more
Detector Shape	Others	Others	Others	Others	Others	Others	Others	Others
Main Body Size	Small Type	Small Type	Standard	Standard	Standard	Small Type	Standard	Small Type
Environment	Standard / Cold Resistant	Standard	Standard	Standard / Cold Resistant	Standard	Standard / Cold Resistant	Standard	Standard / Oil Resistant / Dust Resistant
Plunger Shape Type	-	-	-	-	-	-	-	-
Number of Plunger Rows	-	-	-	-	-	-	-	-
Roller Lever Shape Type	-	-	-	-	-	-	-	Standard
Lever Shape Type	-	-	-	-	-	-	-	Lever / Arm Lever
Rod Shape Type	-	-	-	-	-	-	-	-
Contact Type	Mutually Insulated Double Throw	Mutually Insulated Double Throw	Mutually Insulated Double Throw	Mutually Insulated Double Throw	Mutually Insulated Double Throw	Mutually Insulated Double Throw	Mutually Insulated Double Throw	Single Pole Double Throw
Contact Point Type	-	-	-	-	-	-	-	-
Contact Material	-	-	-	-	-	-	-	-
Rated Operating Voltage(V)	DC125V / DC250V	DC125V	DC125V / DC250V / AC100/125V / AC240/250V	AC100/125V / More than AC300V	DC125V / DC250V	DC125V / DC250V	AC100/125V / AC240/250V	AC240/250V
Rated Conductance Current(A)	2.5	1	10	10	2.5	2.5	10	10

Configure

Specification/Dimensions

Detector Shape
- Plunger Type
- Roller Lever Type (Rotary)
- Lever Shape (Push)
- Rod Shape
- No Lever Type (Knurled Shaft)
- Others
- Roller lever type
Images

Clear

Main Body Size
- Standard
- Small Type
Clear

Environment
- Standard
- Outdoor Corrosion Resistant
- Cold Resistant
- Heat Resistant
- Hydrogen Gas
- Weather Resistant
- Oil Resistant
- Dust Resistant
- Water Resistant
Clear

Plunger Shape Type
- Top Plunger
- Ball Plungers
- Roller Plungers
- PerpendiCular Side Roller Plungers
- Side Surface Plunger
- Side Surface Ball Plunger
- Multiple
Images

Clear

Number of Plunger Rows
- 2
- 3
- 4
- 5
- 6
Clear

Roller Lever Shape Type
- Standard
- Fork Lever Lock
- Variable Roller Lever
- Center Roller Lever
- Variable Rod Lever
- Spring Rod Lever
Images

Clear

Lever Shape Type
- One Way Roller Vertical
- One Way Roller Horizontal
- Lever
- Hinge Lever
- Hinge Roller Levers
- Arm Lever
Images

Clear

Rod Shape Type
- Variable Metal Rod
- Spring + Metal Rod
- Spring + Resin Rod
- All Spring Rod
Images

Clear

Contact Type
- Mutually Insulated Double Throw
- 2-Circuit Double Break
- 4-Circuit Double Break
- Single Pole Double Throw
Images

Clear

Contact Point Type
- Rivet
Details

Clear

Contact Material
- Gold Alloy
Clear

Rated Operating Voltage(V)
- 30 VDC or Less
- DC125V
- DC250V
- AC100/125V
- AC120/240V
- AC240/250V
- More than AC300V
Clear

Rated Conductance Current(A)
0.01

0.03

0.1

0.4

0.5

0.8

1

2.5

4

5

10

15

20
Clear

Related Categories to Limit Switch

- Limit Switch
- Peripheral Components (for Limit Switches)

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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Limit Switch

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Specification/Dimensions

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)

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FAQ Limit Switch

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