What it is and how it works The sliding varistor is a commonly used electrical device. Its working principle is to change resistance by adjusting the length of the resistance wire connected to the circuit, thereby gradually changing the current in the circuit. Key benefits Fine tuned current control: adjusts resistance to tailor circuit current as needed. Durable and serviceable: made with materials chosen for longevity; accurate installation position; easy to and disassemble. performance and reliability: rotary manual operation for easy adjustment; can be naturally cooled; glazed surface enhances durability; supports power, has strong overload capability, and offers temperature resistance. Features Material: durable construction designed for long life Surface finish: glazed coating for protection and reliability Adjustment: rotary manual control for precise resistance setting Thermal and power handling: power rating, strong overload capability, and temperature resistance Installation: accurate mounting position facilitates reliable operation and straightforward replacement Use scenarios Laboratory testing: used to vary current in test circuits for characterization and experiments Power supply calibration: enables precise adjustment of current in adjustable power supplies Industrial control: suitable for startup control, load management, and protection tasks in equipment requiring adjustable resistance Notes Designed to provide reliable resistance adjustment through length variation of the resistance wire while maintaining durability and ease of maintenance.