ESE-22MH4 Switches

Snap Action, Limit Switches - ESE-22MH4 application field and working principle

Snap-action, or limit switches, are electromechanical devices that act as a switching mechanism. There are a wide range of applications for this type switch, ranging from household appliances to industrial settings. The ESE-22MH4 is a particular model that is used in safety applications where a reliable and precise switch actuation is essential. In this article, we will explore the application field and working principle of the ESE-22MH4.

Application Field

The ESE-22MH4 snap-action, limit switch is particularly suitable for a wide range of safety-critical applications where a reliable and precise switch actuation is required. It is suitable for use in security automation, physical access control, industrial machinery and general purpose machine safeguarding applications. It is also used in HVAC and domestic appliances such as washing machines, dryers and refrigerators.

This switch is suitable for safety related qualified application and certified to meet high speed and low leakage requirements of the UL508 and EN13850. It is categorized as a subminiature snap-action switch, which is limited to applications operating with AC or DC load currents of less than 15A and an operating temperature between -40°C and 85°C.

Working Principle

The ESE-22MH4 is designed to be actuated by a sliding pin or plunger when opened or closed. When in the open state, the switch is considered ‘closed’, and the contact is said to be ‘on’. When in the closed state, the contact is said to be ‘off’. The switch is operating with a maximum contact resistance of 30mΩ.

The switch is actuated by means of a sliding pin or plunger with up to 40mm of travel. When the plunger is moved, the internal mechanism of the switch is designed to snap rapidly into the correct state, resulting in switching that is quick and precise. This design is intended to ensure reliable operation in any environment, while also ensuring durability even in very harsh conditions.

Conclusion

The ESE-22MH4 snap-action, limit switch is a reliable and precise switch actuation device, suitable for a range of safety-critical applications. It is certified to meet high speed and low leakage requirements and is limited to applications operating with AC or DC load currents of less than 15A and between -40°C and 85°C. The switch is actuated by a sliding pin or plunger with up to 40mm of travel, which results in quick and precise switching. This design ensures reliability in any environment for long-term durability.