275VAC - 430VDC 20mm Varistor - 20D431K is your ultimate solution for reliable overvoltage protection. Designed to safeguard your electronic circuits, this robust Varistor effectively absorbs excessive voltage transients, preventing potential damage to sensitive components. With its compact 20mm diameter, this varistor is perfect for space-constrained applications while providing optimal performance between 275VAC and 430VDC. Its high energy absorption capacity and quick response time ensure that your devices are protected against voltage spikes, enhancing their longevity and performance.