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Wiring diagram of small relay

Wiring diagram of small relay

2024-09-25

Each relay has a name, and generally the normally open point and normally closed point share the same name with the relay.

If there are 10 relays, there will be 10 names, as long as each relay and contact is not confused with other relays.
Wiring diagram of small solid state relay
Small relay wiring diagram

Principle and base wiring diagram of commonly used small relays
Commonly used small relays include DC and AC types. They have the same appearance, and their contacts are generally two groups of normally open and two groups of normally closed or four groups of normally open and four groups of normally closed. The corresponding sockets are also relatively uniform, but sometimes the printed numbers are not very clear. In order to enable everyone to clearly grasp the corresponding wiring relationship and prevent wrong connection, the electrical schematic diagram and physical wiring diagram are now provided for your reference.


Note: For relays working in DC power mode, the No. 14 terminal should be connected to the positive pole and the No. 13 terminal to the negative pole, so that the LED can light up. If it is connected in reverse, it will not light up. Of course, the reverse connection will not affect the action effect, but it is not conducive to maintenance and inspection. For relays working in AC power mode, there is no difference in polarity, and the diode will definitely light up.

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