Safety X2 capacitors are a type of safety capacitor and are widely used in scenarios to ensure that equipment does not endanger personal safety after capacitor failure. Safety capacitors are mainly divided into two types: X-type capacitors and Y-type capacitors. X-type capacitors are usually connected across the two lines (L-N) of the power line, and metal film capacitors are generally used. Y-shaped capacitors are connected across the power line and the ground line (L-E, N-E). They usually appear in pairs. The capacitance level of X-type capacitors is usually in the microfarad level, while the capacity level of Y-type capacitors is in the nanofarad level. X-type capacitors are mainly used to suppress differential mode interference, while Y-type capacitors are used to suppress common mode interference.
Safety X2 capacitors are low-voltage safety capacitors, where "X" refers to the X type: the capacitance between the phase line and the neutral line. In the safety regulation
Safety X2 capacitor products are also printed with capacity and voltage values, such as 0.1UF; K; 275V; 310V, etc. What do these marks mean? 0.1UF represents the capacity of 0.01UF, usually called 104; K represents the capacity error of 10%; 275V~ represents the rated voltage of 275V AC; 310V~ represents the rated voltage of 310V AC.
As for the difference between 275V and 310V safety X2 capacitors, they are actually the same in performance, and there is no difference in price or product box size. 310V includes the 275V range, and now manufacturers are gradually using 310V printed markings. Therefore, the 310V safety X2 capacitor is actually an expansion of the 275V capacity, allowing it to adapt to higher voltage application requirements while maintaining the same performance and reliability. This change reflects the manufacturer's optimization and standardization of its product range, aiming to improve the suitability of capacitors and user convenience.