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MKA-10110 B (MKA-10109 B)

Reed switch 0.5A / 100V 7 ... 40 A

  • Switched current, A: 0.5
  • Switched voltage, V: 100
  • Response time, ms: 0.5
  • Release time, ms: 0.3
  • Contact set: 1 circuit
  • Weight g: 0.08

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Nom. number 94332712
Manufacturer Ryazan Plant of Cermet Instruments
Switched current, A 0.5
Switched voltage, V 100
Response time, ms 0.5
Release time, ms 0.3
Contact set 1 circuit
Weight g 0.08


MKA-10110 B (MKA-10109 B): A magnetically controlled contact (reed switch) is an electric device that changes the state of an electric circuit by mechanically opening or closing it when a control magnetic field acts on its elements, combining the functions of contacts, springs, and sections of electric and magnetic circuits.
The principle of operation of reed switches is based on the use of interaction forces arising in a magnetic field between ferromagnetic bodies. In this case, the forces cause deformation and displacement of the ferromagnetic current conductors of the electrons.


  1. The reed switch, MKA-10110 B (MKA-10109 B), contains a pair (or more) of magnetizable, flexible, metal reeds whose end portions are separated by a small gap when the switch is open.
  2. The reeds are hermetically sealed in opposite ends of a tubular glass envelope.
  3. The reed switch’s application is to detect the opening of a door, when used as a proximity switch for a burglar alarm.

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