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Safety Capacitors are in stock with same-day shipping at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many safety capacitor manufacturers including KEMET, Murata, TDK, Vishay, Wurth & more.

Safety capacitors are specialized capacitors designed to provide reliable circuit operation while meeting stringent safety requirements for applications connected to AC power lines. They are engineered to withstand voltage surges, electrical stress, and fault conditions without creating hazardous failures, helping protect both equipment and users. These capacitors play a critical role in electromagnetic interference suppression, electrical isolation, and power line filtering within residential, commercial, and industrial electronic systems.

Types: The most common safety capacitor types include Class X capacitors (X1, X2, and X3), Class Y capacitors (Y1, Y2, Y3, and Y4), combination XY capacitors, metallized film safety capacitors, and ceramic safety capacitors, each designed to satisfy specific line-to-line or line-to-ground safety requirements.

Applications: Safety capacitors are widely used in power supplies, industrial automation equipment, household appliances, motor drives, lighting systems, consumer electronics, communication devices, and EMI/RFI filtering circuits to enhance safety and electromagnetic compatibility.

Selection requirements: To choose safety capacitors, evaluate safety class rating, capacitance value, voltage rating, regulatory certifications, operating temperature range, surge withstand capability, dielectric type, package configuration, and suitability for the intended electrical and environmental conditions.

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Please view our large selection of Safety Capacitors below.