Varistor 10D431K — Carbon-Composition, 430 V Key benefits Protects sensitive electronics from transient overvoltages by clamping spikes and diverting surge energy away from components. Simple, passive protection that requires no external control or power, making it easy to add to existing circuits. Carbon-composition technology delivers consistent transient suppression performance for reliable operation in standard protection roles. Main specifications Type: Varistor Model number: 10D431K Voltage rating/tolerance: 430 V Technology/material: Carbon composition Why you need this varistor Prevents costly component failures and downtime by absorbing short-duration voltage spikes caused by lightning strikes, switching events, or inductive load switching. Complements fuses and circuit breakers by handling fast transients that those devices cannot suppress. Offers a compact, low-maintenance way to increase the longevity and reliability of power supplies and electronic systems. Performance and attributes Function: Clamps transient overvoltages to protect downstream circuitry. Material: Carbon composition as specified for stable transient response. Compatibility: Suitable for use wherever a 430 V-rated varistor is required; check circuit voltage and energy requirements against this component’s rating and model number 10D431K. Practical applications (real-world scenarios) Protect the AC mains input of power supplies and chargers from occasional voltage spikes to avoid damage to regulators and downstream electronics. Safeguard control boards and sensors in home appliances or industrial equipment against switching transients and inductive kickback. Use on the input or across sensitive components in consumer electronics and small machinery to reduce failure rates caused by transient surges. Installation and selection tips Match the varistor’s voltage rating (430 V for this model) to the normal operating voltage of the circuit so it remains inactive during normal operation and responds only to overvoltage events. Verify the energy and peak current requirements of your application; choose this model where a 430 V carbon-composition varistor meets the surge-handling needs. Model reference Exact model: 10D431K (as specified). Use this model number when verifying compatibility and sourcing replacements.