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This section provides an overview for magnetic contact switches as well as their applications and principles. Also, please take a look at the list of 7 magnetic contact switch manufacturers and their company rankings. Here are the top-ranked magnetic contact switch companies as of March, 2026: 1.ZhuZhou Meidasi Technology Co.,Ltd.
Table of Contents
A magnetic contact switch is a type of electrical switch that is activated by a magnetic field. It incorporates an internal magnet that influences the switch's contacts, enabling the switch to open or close an electrical circuit.
Under normal conditions, the magnetic force inside the switch keeps the contacts attracted to each other, thus completing the circuit. However, when an external magnet is brought near, it can alter the internal magnetic field, causing the contacts to separate and the circuit to open.
Widely used for monitoring the open or closed status of doors, and windows, and as position detection devices in industrial machinery, magnetic contact switches are crucial for security and safety systems. Their ability to operate without direct contact makes them particularly useful for applications where minimal physical interference is desired.
*Including some distributors, etc.
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NSI, established in 1975 and based in Huntersville, North Carolina, USA, serves as a manufacturer and supplier of electrical, building technology, and HVAC products. The company, through acquisitions like Bridgeport Fittings, Polaris, TORK, and WarriorWrap, utilizes various brand technologies to meet customer demands in sectors requiring efficient wire management, electrical circuit connectivity, system control, and proficient electrical installations and repairs. Its diverse offerings include electrical connectors, fittings, controls, and fasteners.
Ningbo SENTEK Electronics Co., LTD, founded in 2001 and headquartered in Industrial Park, Ningbo, China, specializes in manufacturing sensors and control components. The company provides products primarily for the industrial automation, automotive, and consumer electronics industries. Its main products include fire alarm panels, fire detector devices, magnetic contact switches, and proximity switches, used in applications like HVAC systems, automotive engine management, and industrial process control. Its products are certified by domestic and foreign certification bodies, such as UL, FCC, KFI, and EN, providing impetus to sustainable and stable development.
Ranking as of March 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | ZhuZhou Meidasi Technology Co.,Ltd |
100.0%
|
Derivation Method
The ranking is calculated based on the click share within the magnetic contact switch page as of March 2026. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
1 | 50.0% |
|
China
|
1 | 50.0% |
