This is a 40A solid state relay module. This relay allows you to control high current AC loads from lower voltage DC control circuitry. This relay also has several advantages over mechanical relays. It can be switched by a much lower voltage and at a much lower current than most mechanical relays. This type of relay can be switched much faster and for much longer periods without wearing out. This relay can switch current loads of up to 40A with a 3-32V DC input and a zero cross trigger control method. It features compact size, high structural strength, good impact resistance, and strong shock resistance.
This is the pack of a single piece of SSR-40DA 3V-32V DC 40A solid state relay
Long service life
Reduced electromagnetic interference
Compact size designed to offer users maximum simplicity.