RioRand 7-70V 30A PWM DC Motor Speed Controller for Brushed Motors

WIDE VOLTAGE & GRADED POWER SAFETY Designed for 770V brushed DC motors, this heavy-duty speed controller delivers 1%100% stepless duty cycle tuning without low-speed stalling. Built with high-voltage MOSFETs and three 100V capacitors, it follows strict safety thresholds (12V250W, 24V350W, 48V450W, 60V400W, max 30A) to prevent heat build-up. Keeping a 510V voltage margin promotes long-term durability for power-hungry ride-on mods, electric go-karts, and custom DIY builds. | WHISPER-QUIET 12KHZ PWM & HIGH HEAT DISSIPATION Wave goodbye to high-frequency motor whine and sudden speed jolts. The advanced 12kHz PWM drive circuit ensures smooth acceleration and vibration-free operation at any speed setting. Housed in a rigid aluminum enclosure that dissipates heat rapidly, this controller maintains cool performance during extended sessions on workshop bench tools, agricultural pumps, and marine trolling motors. | FLEXIBLE MOUNTING & 3-WAY CONTROL SWITCH Customizing control panels is seamless with the included 15cm (5.9 in) detachable potentiometer ribbon cable. The panel features an integrated Run/Stop/Brake rocker switch for instant halting and control. Ideal for retrofitting RV ventilation fans, golf cart accessories, mini drill grinders, and automated robotics where panel-mounted controls are required. | FOOLPROOF WIRING & OVERCURRENT PROTECTION Clear terminal markers prevent costly reverse-polarity damage on the DC input. Motor outputs are non-polarizedsimply swap the two motor wires to reverse rotation direction. Equipped with an onboard power status LED and a replaceable inline fuse, it guards your equipment against unexpected current surges during sudden load spikes. | REAL-LOAD TUNING & POWER CUTOFF NOTICE Engineered for accurate real-world feedback. In PWM controllers, measured no-load output voltage equals input voltage; real-time speed adjustment and voltage drops must be measured under an active motor load. Note: Setting the potentiometer knob to the lowest position sets the motor to minimum speed but does not cut off power completely; disconnect the main power supply for a full shutdown.