MCTFW6309F Adjustable Voltage Regulator Module Overview The MCTFW6309F is an adjustable voltage regulator module designed for stable excitation and precise voltage control in generator systems and electronic projects. It combines regulation accuracy, builtin protections, and flexible input options in a compact plastic housing. Key Benefits Precise output: Voltage regulation accuracy better than +/1% when frequency varies within 4%, providing steady excitation for sensitive electronics and generators. Reliable protection: Builtin low frequency protection, overexcitation limit, slow start, EMI harmonic suppression, and an 8A fuse help protect connected equipment. Flexible control: External voltage trim and compatible control inputs allow easy adjustment to match application requirements. Robust operation: Wide ambient temperature range and vibration tolerance suit a variety of industrial and DIY environments. Main Features Model: MCTFW6309F Sampling input: 220/400 VAC (shortswitch) Rated voltage input range: 180276 VAC Excitation output voltage: Maximum 90 VDC at 240 VAC input Continuous output current: 5 A Noncontinuous current: 8 A for up to 10 seconds Minimum resistor value: 15 ohm Voltage regulation accuracy: less than +/1% (for frequency change within 4%) Voltage buildup (startup) time: 4 seconds Power consumption: maximum 8 W Builtin features: slow start, EMI harmonic suppression, builtin 8 A fuse Low frequency protection knee values: 50 Hz system = 46 Hz, 60 Hz system = 56 Hz Overexcitation protection: factory default 75 VDC Residual magnetization requirement: voltage at buildup must be greater than 5 V at 25 Hz External adjustment: up to +/10% using a 1 k ohm, 1 W potentiometer Control inputs (A1, A2): simulation voltage input; maximum input +/5 VDC or 0 to 10 VDC Input impedance: greater than 2 k ohm Sensitivity: 5%, compatible with a 1 VDC control signal, TRIM adjustable Material: plastic Color: as shown Environmental and Mechanical Operating temperature: 40 to 65 degrees C Storage temperature: 40 to 85 degrees C Vibration: 3 G at 100 to 2000 Hz Relative humidity: less than 95% Compatibility and Applications Designed to work with a range of generator regulators and electronic control systems, the MCTFW6309F is suitable for: Generator excitation control: Stabilize excitation voltage for small to medium generators and protect against overexcitation and low frequency conditions. Electronics and lighting systems: Provide a controlled DC excitation source for LEDs, microcontrollers, and control circuits in robotics or automation. DIY and laboratory use: Adjustable output and remote control input make the module useful for prototyping, testing, and retrofitting equipment. What to Consider Verify input voltage range and system frequency before installation. Ensure minimum resistor value and wiring practices match your generator or load specifications. The product appearance or color may vary slightly from pictures. Confirm compatibility with your project needs prior to ordering. Package Contents 1 x Adjustable Voltage Regulator Module MCTFW6309F This module delivers precise voltage regulation, configurable control inputs, and multiple protection features for reliable excitation and electronic power control.