China Solenoid

The stroke is the usable distance travelled by the plunger from its initial position to the end of travel. As the stroke is increased the force is reduced and vice versa.

6.1. Start of Stroke
This is the position of the plunger before it starts its travel. It is also the position when it returns upon conclusion of the complete cycle.

Unlike DC solenoids, AC solenoids provide relatively high operating/cycling frequencies and low cycling times; this results in hard operation which influences service life. Power consumption depends on the position of the plunger.

High cycling frequencies can cause dangerously high thermal loading in AC solenoids and the maximum permissible temperature is therefore the limiting factor for cycling frequency.