111SM17-T

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Snap action, limit switches, such as the 111SM17-T, are a type of electrical switch designed to turn a circuit on and off in response to a physical action taken to a device. This type of switch is usually connected to a mechanical spring, trigger, or lever. By snapping a switch, the contact is forced either on or off. This action opens or closes an electrical circuit, controlling the flow of electricity and therefore helping to ensure safety.

The 111SM17-T is a high performance snap action, limit switch designed to control several types of loads with a variety of operating conditions. The device is suitable for heavier light-industrial and industrial applications, including pneumatic and hydraulic applications. This top-mount snap action limit switch is rated at 1-1/4 horsepower at 1 Amps at 600 Volts AC and features built-in over-travel adjustment for superior repeatability. The stationary contacts are silver alloy and the actuator is preload-plated thermoplastic.

The working principle of the 111SM17-T is relatively simple. When the switch is triggered, the movement of a lever or button forces a physical contact onto a stationary target, opening or closing an electrical circuit. For example, when the button is turned off, the contact is forced off and the circuit is interrupted. When the button is turned on, the contact is forced on, creating the connection and completing the circuit. The device uses a lever or armature, which is secured to a spring-loaded disc, allowing for snap-action movements when a predetermined amount of force is applied to it.

The 111SM17-T is suitable for a variety of applications, including control limit switches, flow switches, pressure and temperature switches, pneumatic and hydraulic systems, motion control, and vehicle control. The design of the device offers quick response and repeatability and can be used in applications where a reliable, consistent switch is required. The device has a wide range of temperature ratings, making it suitable for indoor and outdoor use. Additionally, the device has UL and CSA approvals and is designed to meet NEMA and IEC standards.

In summary, the 111SM17-T is a durable and reliable high performance snap action switch designed to meet a variety of applications. The device is constructed with top-mounted contacts, preload-plated thermoplastic actuator, and built-in over-travel adjustment for superior repeatability. The device is suitable for light-industrial and industrial applications, including pneumatic and hydraulic systems, and is UL and CSA-approved. The working principle of the device is based on the movement of a lever or button, forcing a physical contact onto a stationary target, and providing reliable, consistent switch control.

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