Magnetic proximity sensor switch (DC 3-wire type / square shape / M9 case type)
Magnetic proximity switch SW-250A, SW-270A Makome Research Institute Magnet sensor
【Sample available for loan!】 A unique magnetic switch different from reed switches and Hall elements. Long lifespan design, maintenance-free limit switch.
This is a DC three-wire magnetic proximity switch using a saturable coil that utilizes high-frequency transmission. We offer four models tailored to different applications based on shape and protective structure. The 'SW-252A' and 'SW-272A', compliant with IP68, can be used underwater at all times. Additionally, leveraging the characteristics of magnetic detection type proximity switches, they can distinguish detection magnetic poles (both NS poles, only N pole, only S pole). Main features: Four models available: rectangular case types 'SW-250A' and 'SW-252A', and M9 case types 'SW-270A' and 'SW-272A'. - The 'SW-250A' and 'SW-270A' with protection structure IP67 come with an operation indicator light. - The 'SW-252A' and 'SW-272A' compliant with IP68 can be used underwater at all times. - Output formats (PNP, NPN) can be selected according to PLC input. - The 'SW-270A' and 'SW-272A' have screw threads on the sensor body, making height adjustment easy after installation! Detection distances can be freely set according to the magnetic force of the magnet, allowing multiple units to be used in parallel without mutual interference. Discontinued models: SW-150, SW-170, compatible products. *For more details, please download the catalog or contact us.*
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basic information
■It detects the magnetic field generated by the magnet, so it is not affected by dirt or dust. ■IP67, rectangular case ■IP67, M9 case ■IP68, rectangular case ■IP68, M9 case ■Various variations are available, including detection magnetic poles. Additionally, taking advantage of the characteristics of magnetic detection type proximity switches, it can distinguish between detection magnetic poles: both N and S poles, only N pole, only S pole, and each type. ■DC 3-wire type. NPN transistor open collector output. PNP available. ■Various magnets for detection are also available. *For more details, please download the catalog or contact us.
Price information
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Delivery Time
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Applications/Examples of results
Conveyor limit switch Origin switch Stop switch
Line up（12）
| Model number | overview |
|---|---|
| SW-250A | IP67, square case, N pole S pole |
| SW-250A-N | IP67, square case, N pole |
| SW-250A-S | IP67, square case, S pole |
| SW-252A | IP68, square case, N pole S pole |
| SW-252A-N | IP68, square case, N pole |
| SW-252A-S | IP68, square case, S pole |
| SW-270A | IP67, M9 case, N pole S pole |
| SW-270A-N | IP67, M9 case, N pole |
| SW-270A-S | IP67, M9 case, S pole |
| SW-272A | IP68, M9 case, N pole S pole |
| SW-272A-N | IP68, M9 case, N pole |
| SW-272A-S | IP68, M9 case, S pole |
catalog（4）
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CAD data（20）
| Model number | overview | File |
|---|---|---|
| SW-250A | Square type IP67 |
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| SW-250A | Square type IP67 |
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| SW-252A | Square type IP68 |
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| SW-252A | Square type IP68 |
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| SW-270A | M9 IP67 |
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| SW-270A | M9 IP67 |
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| SW-272A | M9 IP68 |
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| SW-272A | M9 IP68 |
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| MG-101 | Rubber magnet for software use |
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| MG-101 | Rubber magnet for software use |
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| MG-102A | SW use ferrite magnet with cover |
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| MG-102A | SW use ferrite magnet with cover |
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| MG-102AS | SW type ferrite magnet with cover, S pole |
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| MG-102AS | SW type ferrite magnet with cover, S pole |
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| MG-103 | SW-type magnetizing device |
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| MG-103 | SW-type magnetizing device |
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| MG-104 | Magnetizing device for software use |
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| MG-104 | Magnetizing device for software use |
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| MG-150 | SW Series Dedicated Magnet |
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| MG-150 | SW Series Dedicated Magnet |
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Company information
Utilizing our original technology of saturable coils, we provide a fundamentally simple magnetic detection element technology that allows for high precision and long-term stability even under adverse conditions. We have received strong support from a wide range of industries, including unmanned transport carts, industrial equipment, labor-saving machines, material handling, machine tools, injection molding machines, civil engineering and construction robots, food machinery, industrial machinery, nuclear facilities, and ships. We also excel in sensors for motorsports such as F1 and Moto GP, tilt meters for construction machinery, and magnetic sensors used for ultra-high precision measurements in scientific fields. Some of our products are also used in applications like multi-story parking and golf cart guidance sensors. All of our products are developed and manufactured 100% in Japan, with over 80% of our product lineup being custom-made based on individual customer requests. We offer many custom options including waterproof, explosion-proof, heat-resistant, water-resistant, and radiation-resistant specifications. If you have any issues related to sensing or measurement, please feel free to consult with us. IoT Platform: Our sales and technical staff will fully support you, from minor customizations of existing products to proposals for new detection principles. You can also rely on us for assistance with Kaizen. For standard products, we offer a reassuring 3-year warranty. Our location is in Ina, Nagano Prefecture, and we are featured on Ipros Monozukuri.