311SM4-H2

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Snap action, limit switches, such as the 311SM4-H2, are movement based actuators used for controlling signals within automated systems, particularly in industrial applications. They are activated when a mechanical button is pushed and a low electrical resistance is created in its circuit, allowing the current to flow. As such, these are the most common type of switch used when there is a need for precise control over the flow of current in multiple applications.

The 311SM4-H2 is a multi-pole (typically four-pole) snap action limit switch, meaning that it has four separate switching points, commonly known as contacts, that can be independently activated. These contacts serve to operate the signal switch, blocking or allowing current to flow, depending on their activation. The 311SM4-H2 is suitable for a broad range of applications, due to the range of available options and its ability to be configured to meet user requirements.

The main components of the 311SM4-H2 include the plunger, contact, and actuator. The plunger is the key component, as it is what physically initiates the switch when pressed and is typically made from nylon. The contact, which is made of metals such as gold, silver, or copper, is what functions as the conductor when the plunger is pushed. The actuator is the plastic housing that contains the plunger and contact, and acts as a barrier between them, protecting them from dust or water damage. The plunger, contact and actuator are the core components of the switch, which all other components are added on to.

The functions of the 311SM4-H2 switch depend on the type of circuit it is used in. In a dual-circuit switch, the switch will either switch one circuit on or off when the plunger is pressed or released. In a four-circuit switch, the switch will either switch two circuits on or two circuits off when the plunger is pressed or released. The 311SM4-H2 is compliant with the international standard UL 1054, meaning it meets the highest level of quality and durability. Additionally, its robust design means it is suitable for a broad range of environments and applications.

In terms of its application field, the 311SM4-H2 switch is particularly popular in the automotive industry, where it is used as a safety measure in cars and other vehicles. It can be used to cut power to the fuel pump or other components if a fault is detected, thus reducing the possibility of accidents or other risks. The snap action limit switch can also be used in numerous other applications, including test and measurement, aerospace, manufacturing, and home automation.

The 311SM4-H2 snap action limit switch is one of the most popular switches on the market, due to its reliable performance, robust design, and wide application range. Its ability to control the flow of current in multiple applications makes it an attractive choice for many industries and businesses, providing them with reliable and secure signal control. Additionally, due to its compatibility with the international standard UL 1054, businesses and industries can be assured that they are getting a quality, reliable, and secure product.

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