The Isocom Components 2004 LTD MOC3021X Triac Output Optocoupler is a reliable, non-zero-crossing, optocoupler specifically designed for the control of very large loads. With its high dielectric strength of 5.3 kV, rated insulation voltage of 400 V, and six-pin DIP form factor, this optocoupler is perfect for solid-state relay applications. It offers fast-switching output, up to 600 V rating, and flexibility in terms of output current range. The MOC3021X is also ESD-protected and UL approved for safety and reliability, making it ideal for AC power control.