SSR-40DA single-phase solid state relay DC controlled AC 10-100DA complete sizes

                   How to choose a model                           

Step 1: Select the control mode  
            DA: DC controlled AC

            AA: AC-controlled communication

            DD: DC control DC

            VA: resistive voltage regulator

Step 2: Calculate the current

            Equipment current ÷ coefficient = selection current

           (Coefficient: resistive load is 35%, rod load is 20%)

For example: a motor with a rated current of 10A, the motor is a rod load

The formula is: 10*0.2=50A, so choose a 50A solid-state relay.

Step 3: Select the radiator

            The correct use of the radiator can effectively increase the life of the solid-state relay, the solid-state relay is hot, and the radiator must be used when the load current is higher than 10A, which needs to be between the solid-state relay and the radiator
1. Bidirectional thyristor output, zero voltage on, zero current off

2. Optical isolation between input and output loops

3. The input/output terminal can withstand 2500V isolation

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