Double Circuit Limit Switch WL - High Strength, Waterproof & Oil-Resistant - China Suppliers & Factory
Advantage: All products of the company can be customized for production according to user usage scenarios.
Working Principle and Structure
The working principle of the WL limit switch is based on a mechanical trigger mechanism. When the detected object reaches the preset position, the mechanical structure in the switch is acted upon by an external force, the contact is triggered, and a switch signal is generated. This signal can be used to start, stop or reverse the motor, and can also be used in other control loops to ensure that the equipment operates according to the set logic.
Common Types and Characteristics
WL limit switches are available in two types: contact and non-contact. Contact limit switches use the collision between mechanical contacts and blocks to switch the circuit on and off; non-contact limit switches include reed switches, photoelectric switches, inductive switches, etc., which are commonly used in equipment such as elevators. These types have the characteristics of high environmental resistance, high durability and high recognition, and can adapt to various complex production needs and environmental conditions.
Environmental Characteristics
| Specification Item | Subcategory | Standard / Value |
|---|---|---|
| Normative reference | Product | IEC60947-5-1, EN60947-5-1, UL508, CSAC22-2N°14 |
| Components | IEC60204-1, EN60204-1 | |
| Ambient temperature | Operation | -10 to +80℃ |
| Storage | -40 to +80℃ | |
| Vibration resistance | Compliant with IEC60068-2-6 | 10-55Hz, 1.5mm Double-amplitude |
| Shock resistance | Compliant with IEC60068-2-27 | Maximum 300ms² (less than 30G) |
| Protection class | IP67 NEMA 3, 4, 13 | |
| Mechanical life | 15,000,000 times | |
Characteristics of Contact Module
| Rated operating characteristics |
AC-15: A300 (Ue=240V, Ie=3A) Ithe=10A DC-13: Q300 (Ue=250V, Ie=0.27A) Complies with IEC60947-5-1 Appendix Table A EN60947-1 |
| Rated insulation voltage |
Between terminals of the same pole: AC1000V (600V) 50/60Hz 1min Between live metal parts and ground wire: AC2200V (1500V) 50/60Hz 1min Uimp 2.5kV Between terminals and non-conductive metal parts: AC2200V 50/60Hz 1min Uimp 2.5kV |
| Insulation resistance | >100MΩ at 500V |
| Operating frequency | 120 times/min |
| Electrical life | 750,000 times |
| Contact resistance | Less than 25MΩ |
| Model | WL-CA2-2 WL-CA2-2-Q |
WL-CA32-41 | WL-CL | WL-D | WL-D1/D2/D3 | WL-NJ/NJ-30 NJ-2/NJ-S2 |
|---|---|---|---|---|---|---|
| Triggering | Convex trigger | Convex trigger | Any moving part | At the end | Convex trigger | Any moving part |
| Triggering type |  |
- |  |
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| Single stage 1C/O Single-pole Type Za |
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| Contact operation | Contacts attract | Contacts separate | |||||
| Max triggering speed | 1.3m/s | 1.3m/s | 1.3m/s | 0.5m/s | 0.5m/s | 1.3m/s |
| Max triggering force | 1360g | 1200g | 142g | 2720g | 2720g | 120g |
| Min restoring force | 227g | - | 28g | 910g | 910g | 50g |
| Weight | 0.330 | 0.340 | 0.300 | 0.251 | 0.251 | 0.286 |
Overall and Installation Dimensions
Frequently Asked Questions (FAQ)
Can the WL limit switches be customized for specific scenarios?
Yes, all products of the company can be customized for production according to specific user usage scenarios to ensure optimal compatibility and performance.
What is the working principle of the WL limit switch?
It operates on a mechanical trigger mechanism. When a target object reaches a preset position, it exerts an external force on the switch's mechanical structure, triggering the contact and generating a control signal to manage the circuit.
What is the ambient operating temperature range for these switches?
The WL limit switch supports an operating temperature range of -10 to +80℃, and a storage temperature range of -40 to +80℃.
What is the mechanical and electrical life expectancy of the switch?
The switch is designed for high durability, offering a mechanical life of up to 15,000,000 operations and an electrical life of up to 750,000 operations.
What protection rating does the WL limit switch carry?
It features an IP67 protection rating, complying with NEMA 3, 4, and 13 standards, which provides high resistance to dust, water, and harsh environmental conditions.