The PANASONIC part ERZ-V20D821 is a high-quality varistor designed for electrical circuit protection. With a voltage rating of 510VAC and 670VDC, this varistor can effectively absorb and dissipate high transients and surges to safeguard sensitive electronic components. It has a peak current rating of 7500A, making it capable of handling large surge currents. The varistor has a maximum clamping voltage of 820V, ensuring that excessive voltage is limited during transient events. With its radial bulk design, this varistor is easy to install and provides reliable protection in a wide range of applications. Trust the PANASONIC ERZ-V20D821 varistor to protect your valuable electronic devices from power surges and voltage spikes.