AH745179-A

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Snap Action, Limit Switches

The AH745179-A is a robust, precise and true snap action switch, part of the Snap Action, Limit Switches family, providing reliable, precise and repeatable switching action over a wide range of temperatures and load conditions when used with mechanical devices. It is widely used in many industrial and commercial applications which require reliable and repeatable switch action over a wide range of temperatures and load conditions.

Application Fields

The AH745179-A is ideal for use in markets that call for reliable control and switching of devices. This switch is a popular choice in machinery, industrial instrumentation, construction equipment, environmental monitoring equipment, transportation, process control and metering applications,and commercial and home appliances as well.

Working Principle

The AH745179-A is a self-contained switch with a coil spring switch mechanism that actuates concurrently with the toggle lever motion. This motion creates a snap action resetting moment of force, which actuates with a clean transfer between states. The switch remains in its actuated state until manually reset. As the toggle lever is moved, the switch is actuated and the mechanism is reset by an internal de-energized spring. Since the resetting moment occurs without a manual reset, it ensures a fully actuated switch and eliminated glitches.

The AH745179-A has a rated minimum toggle lever torque of 2.50 in-oz and maintains a stable position throughout its operating temperature range of -40°C to +85°C. It is double insulated and hermetically sealed, suitable for a wide range of environmental and harsh chemical conditions, providing reliable, precise and repeatable switching action over a wide range of temperatures and load conditions.

Design

The AH745179-A features a robust and reliable design which consists of an all-plastic over-molded body, molded to the lever and solder lug contacts. The switch is available in single pole and double pole configurations, and has an electrical rating of (2A @ 24VDC, 1A @ 120VAC). It features a multi-choice of actuator configurations and contact configurations such as SPDT, DPDT and Double Break.

Conclusion

The AH745179-A is a popular choice among Snap Action, Limit Switches used in many industrial and commercial applications requiring reliable and repeatable switch action over a wide range of temperatures and load requirements. It offers a robust and reliable design suitable for harsh condition environments, with a wide variety of available actuator and contact configurations. With its snap action resetting moment of force, it ensures a fully actuated switch with no manual reset, providing superior performance and long lasting service life.

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