What it is Current limiting element a ceramic wirewound adjustable resistor rheostat for reliable current control in electrical circuits Key specs - Power rating 50 W - Resistance value 300 Ohm nominal - Material ceramic and wirewound - Adjustable resistance Benefits - Controls current precisely to protect components and extend circuit life - Durable ceramic body handles heat and continuous operation - Flexible use with adjustable resistance for fine tuning Why you need it - Provides safe, controllable current in power supplies and test setups - Reduces surge and startup stress on downstream devices - Offers a stable, adjustable resistance option in various circuits Use scenarios - In power supplies or battery charging circuits to limit current and prevent overload - In laboratory test rigs to set a specific current for experiments - In heating elements or motor control applications where gradual current adjustment is required Specifications at a glance 50 W, 300 Ohm nominal, ceramic wirewound adjustable resistor (rheostat) suitable as a current limiting element