Signal relay housing manufacturer teaches you how to choose a good electromagnetic relay? A relay is a fully automatic electronic switch that serves as a protective component. By using a relay, practical operations such as switching, breaking, and connecting multiple circuits can be carried out, expanding the scope of operations. By using flexible relays and intermediate relays, high-power power circuits can be operated based on fine operation quantities, while by combining relay bases, multiple operation data signals can be comprehensively analyzed to achieve estimated actual operation effects. But many people are not very familiar with the selection of electromagnetic relays, and they have many doubts about how to choose a good electromagnetic relay. So, how should electromagnetic relays be selected?

Selection method for electromagnetic relays

1. Select the rated value of the electromagnetic coil of the electromagnetic relay for operation. The rated value of the electromagnetic coil of the DC electromagnetic relay driven by a transistor or integrated circuit chip should be within the output current range of the optocoupler circuit (usually twice the suction current).

2. Selection of Contact Types and Contact Load for Electromagnetic Relays: Relays of the same type and specification generally have various contact methods to choose from (electromagnetic relays include single group contacts, double group contacts, multiple contacts, normally open contacts, normally closed test contacts, etc.), and suitable contact types for power circuits should be selected.

3. Selecting relay coil combination electromagnetic coil power supply voltage: When selecting an electromagnetic relay, Z should first choose whether the relay electromagnetic coil power supply voltage is AC or DC. The rated operating voltage of a relay should generally be less than or equal to the operating voltage of its control circuit.

4. Selecting the appropriate volume for electromagnetic relays: The size of the relay volume is generally related to the size of the relay contact load. Choosing relays with a larger volume should also be based on the requirements of the power circuit used.

Article source: Electromagnetic relay manufacturer www.jxzhongxuan.com