29 Emergency Stop Switch Manufacturers in 2022
This section provides overview, applications, and principles of emergency stop switches. Also, please take a look at the list of 29 emergency stop switch manufacturers and their company rankings.
What Is an Emergency Stop Switch?
An emergency stop switch refers to a switch that can stop equipment in an emergency.
It is not uncommon for industrial machinery to be used under high torques and pressures that are more than human bones can bear. When machines with such strong forces come into contact with humans, there is a risk of serious industrial accidents and personal injury. Emergency stop switches are installed to stop the equipment, thereby preventing human injury forcibly. It also prevents the equipment from being broken by its strong force in the event of a device runaway.
Uses of Emergency Stop Switches
Emergency stop switches are often used in industrial machinery with visible drive units.
Typical examples are installed in the middle of conveyor belts, etc. Since there have been countless conveyor entrapment accidents in the past, the installation of emergency stop switches is required by many national enforcement regulators. Additionally, when belt conveyors are used as equipment to transport goods over long distances, it is necessary to install emergency stop switches over a wide area. Since pushbutton switches may be out of reach, tug switches are generally used as emergency stop switches.
Principle of Emergency Stop Switches
The mechanism of an emergency stop switch differs depending on its shape.
When we generally think of emergency stop switches, we think of pushbutton emergency stop switches. Pushbutton switches are usually painted red because they need to stand out from other pushbuttons. Push-lock switches are also used because of the danger of being released by removing the hand from the pushbutton, so they are locked when pressed. Most are turn-reset, which is released by turning the button itself clockwise. The back of the pushbutton switch has contacts to control the electrical circuit. It is common to use a B contact, which interrupts the circuit by pushing the push button. In addition, if a body accidentally hits the emergency stop switch and the equipment stops, work at the production site will be disrupted. Therefore, the switch is often covered with a guard ring to prevent the equipment from stopping, even if a body strikes it.
Pull-train emergency stop switches used on conveyors have a structure in which a wire is stretched around the conveyor. Pulling the wire causes the switch to collapse, stopping the machine. Like the pushbutton type, once activated, the switch is locked until it is returned to its original position.
List of 29 Emergency Stop Switch Manufacturers
*Including some distributors, etc.
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OMRON Industrial Automation
Emergency stop switch
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Pepperl+Fuchs Inc.
Human-Machine safe interface
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Emergency Stop Switch Manufacturer Ranking
*Including some distributors, etc.Number of Employees
- Siemens: 293,000
- Wieland: 1,700
- Pilz: 1,000
Newly Established Company
- Dailywell Electronics: 1997 (26 years ago)
- Panasonic Industry Europe: 1988 (35 years ago)
- Omega Engineering: 1962 (61 years ago)
Company with a History
- Siemens: 1847 (176 years ago)
- Schneider Electric: 1871 (152 years ago)
- RAFI: 1900 (123 years ago)
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