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What is the reed switch (reed switch) switching voltage and switching current?

- May 22, 2018 -

Reed switch voltage

Usually expressed as the maximum DC voltage (volt) or peak voltage, it is the maximum voltage that the switch can withstand. When the voltage is too high, arc discharge will occur and some metal transition will occur. The arc will usually exceed 5V. This arc discharge is the main factor that causes the switch life to shorten. In the range of 5V to 12V, of course, depends on the size of the current. Most reed pipes still have excellent characteristics after many operations. Mostly closed reed switches cannot switch more than 250 volts, mainly because when an attempt is made to open the switch, arc discharge cannot be avoided.


Typically, vacuum switches are used when switching over 250 volts, they can switch up to 10,000 volts. When the switching voltage is less than 5 volts, no arc will be generated, so no reed losses will occur, so the life of the reed switch can be up to 1 billion operations. Well-designed reed relays can be switched and resolved very small, down to 10 nano Volt voltage.



Reed switch current

The switching current is the current value measured when the switch is closed. It is represented by direct current or peak alternating current. The higher the switching current is, the shorter the life of the switch is.


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