D3V-16G2-1C5-K

Snap Action, Limit Switches

The D3V-16G2-1C5-K snap action, limit switch is often used for applications where an external control is needed for controlling and diagnosing an electrical circuit. When properly installed, the switch provides reliable contact closure prior to reaching a pre-set point.

The snap action limit switch consists of an actuator, a housing, and some electrical contacts. The actuator is the component that reacts to the movement of a mechanical component, or switch operator. This actuator includes a normally closed contact and a normally open contact. When pressure is applied to the actuator, it triggers the internal switch mechanism, transferring the output to the same contacts as the external switch operator.

When used in an electrical circuit, the switch can be used to control the opening or closing of an electrical relay, as well as pull and release an electrical motor. Depending on the type of circuit and the desired function, the snap action limit switch may also be used to detect vibration or friction in a mechanical system.

In terms of its internal mechanics, the D3V-16G2-1C5-K snap action limit switch operates by the physical displacement of two contact plates held by the actuator in a stationary position. The actuator is a spring-loaded device which, when triggered, causes the two contact plates to move either inward or outward from the center of the body. When the plates move outward, they close the internal contacts and open the external contacts; and when the plates move inward, they open the internal contacts and close the external contacts.

The contact plates are constructed with a plastic casing and a gold alloy backing, an arrangement which ensures consistent and reliable contact closures within a wide temperature range and in the presence of dust and moisture. The actuator itself is spring-loaded, which ensures the contact plates are reset after a cycle is completed, ready for future use.

The D3V-16G2-1C5-K snap action limit switch is a simple but highly effective device, and has a wide range of applications. This includes industrial, automotive, and medical applications, where reliability and cost-efficiency are paramount. With a long life-span, the switch is also used in applications where a single switch is expected to experience frequent actuations, such as door and window switches, or in domestic appliances, where contact closure is triggered at precise intervals.