11SM861-T

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Snap action, limit switches have a wide range of applications, as they help protect and control the operation of a mechanical system or circuit. The 11SM861-T is a type of snap action, limit switch designed for use in commercial and industrial applications. This article will discuss the 11SM861-T’s application field and working principle.

Applications

The 11SM861-T snap action, limit switch is typically used in motion control and security systems. It can also be used to help with automated doors, industrial machinery, emergency exit systems and safety switches. The 11SM861-T is especially suited for applications where precise switching accuracy is desired, such as position sensing, medical devices, and laboratory instruments. The 11SM861-T is rated for up to 250 Vac, 5 A and up to 750 Vac, 5 A up to 100 mA at a pressure of 25 kgf.

Working Principle

The 11SM861-T snap action, limit switch is based on a rolling pivot mechanism. This mechanism causes a precise, repeatable, switchable action when activated. When the limit switch is triggered, the armature is pushed past the designed point and springs back, causing the mechanism to reset and the next cycle to begin. The pivot mechanism is designed to allow very small movements, thus ensuring precise accuracy and repeatability. The advantage of this design is that it can be used with very low-power applications, as the switch does not require substantial energy input to activate it.

The 11SM861-T limits switch is also capable of performing hysteresis operation. This means that when the armature is moved beyond a predetermined point, it will cause the switch to reset itself to a known state before re-triggering. This hysteresis allows for a very repeatable operation, as the switch will only be activated after a certain amount of travel has been completed.

The 11SM861-T is also protected from dust and other forms of debris, as it is rated IP67. This level of protection ensures that the limit switch will function even when exposed to dirt and moisture. The switch operates at temperatures ranging from -20°C to 80°C and can be installed in most commercial, industrial and residential areas.

Conclusion

The 11SM861-T is an excellent snap action, limit switch for use in a variety of commercial and industrial applications. It is based on a rolling pivot mechanism, which enables it to perform a precise, repeatable switching action at low power. The switch is also protected from dust and moisture, and is rated IP67. It can be used in temperatures between -20°C and 80°C, making it ideal for use in environments with extreme temperature ranges. In addition, it provides hysteresis, providing superior accuracy and repeatability.

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