Varistor 07D221K — Carbon Composition, Rated 220V Key benefits Protects electronics from transient voltage spikes and surges that can damage components or cause failures. Reduces downtime and repair costs by clamping overvoltages at or above the 220V rating. Carbon composition technology gives predictable resistance behavior under surge conditions for reliable protection. What this component does Type: Varistor — a passive surge-suppression device that limits voltage by changing resistance during transient events. Function: Absorbs and diverts excess energy when line voltage exceeds the specified tolerance, protecting downstream circuitry. Clear specifications Model: 07D221K Resistance tolerance / Rated voltage: 220V Technology / Material: Carbon composition Compatibility and usage notes Designed for use in circuits that require a varistor rated for 220V; suitable as a like-for-like replacement for model 07D221K. Can be installed across supply lines or between line and ground as appropriate for the application; verify circuit design and mounting requirements before use. Performance highlights Activates at voltages at or above the 220V rating to clamp transient spikes and protect sensitive components. Carbon composition construction provides consistent performance under transient conditions. Typical applications Surge protection on AC mains input for household or industrial appliances operating in 220V environments. Transient suppression on power supply boards for consumer electronics, audio equipment, or control systems. Protection for motor control circuits, relays, and industrial instrumentation exposed to switching transients. Ordering and selection tip Confirm the 07D221K matches your circuit’s required voltage rating and physical mounting before purchase to ensure proper fit and protection.