40A YF Brushless Motor Controller – 48V–72V, 15-FET Sine Wave, MT60

This high-performance 40A YF brushless motor controller is designed for compatible electric bicycles, electric scooters and custom BLDC motor systems operating between 48V and 72V. Its 15-FET power stage provides strong and efficient motor control for compatible high-power applications.

The smart sine-wave design provides smooth acceleration, reduced motor noise and efficient power delivery when used with a compatible Hall-sensor motor. The controller also features self-learning, throttle and pedal-assist support, low-level brake input and a range of protective functions.

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Key Features

• 40A Maximum Current: Designed for compatible high-power electric bicycle and scooter motor systems.
• 15-FET Power Stage: Strong MOSFET construction provides efficient and dependable power control.
• 48V–72V Compatibility: Suitable for compatible battery and motor systems within the stated voltage range.
• Sine-Wave Operation: Provides smooth acceleration, reduced motor noise and comfortable power delivery with a compatible Hall-sensor motor.
• Dual-Mode Support: Designed to operate in sine-wave mode with Hall sensors and sensorless square-wave mode when correctly configured.
• Self-Learning Function: Assists with matching the controller phase and Hall-sensor arrangement to a compatible brushless motor.
• MT60 Motor Connection: Supplied with an MT60-style three-phase motor connector for compatible installations.
• Throttle & PAS Support: Supports compatible throttle control and pedal-assist operation with up to five assist levels.
• Compatible Display Adjustment: Supported settings can be adjusted through a matching OMD-protocol display.
• Protective Aluminium Housing: Black anodised casing helps dissipate heat and protects the internal components.

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Technical Specifications

Product Type	Brushless BLDC motor controller
Controller Type	YF sine-wave / dual-mode controller
Voltage Range	DC 48V–72V
Rated Current	Approximately 20A
Maximum Current	Approximately 40A ±1A
MOSFET Count	15 FETs
Control Mode	Hall-sensor sine wave / sensorless square wave
Motor Phase Connector	MT60 three-phase connector
Display Protocol	Compatible OMD protocol display or operation without display
Throttle Signal	Approximately 1V–4.2V
Brake Input	Low-level brake signal
PAS Levels	Up to 5 assist levels with a compatible display and system
Low-Voltage Protection	Configured according to the selected system voltage
Water-Resistance Rating	Manufacturer-stated IP65
Approximate Cable Length	10–16cm, depending on the cable
Approximate Dimensions	175 × 110 × 65mm
Approximate Weight	610g
Housing	Black anodised aluminium

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Manufacturer-Stated Power Guide

System Voltage	Rated Power	Maximum Theoretical Input at 40A
48V	Approximately 960W at 20A	Approximately 1920W
52V	Approximately 1040W at 20A	Approximately 2080W
60V	Approximately 1200W at 20A	Approximately 2400W
72V	Approximately 1440W at 20A	Approximately 2880W

Power notice: These figures are electrical input calculations based on voltage multiplied by current. Actual motor output depends on the battery voltage under load, controller settings, motor efficiency, BMS limits, wiring, temperature and operating conditions.

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Protection Functions

• Over-voltage protection
• Low-voltage protection
• Over-current protection
• Controller over-temperature protection
• Motor lock / stall protection
• Abnormal throttle or runaway protection
• Hall-sensor fault support through dual-mode operation
• Brake cut-off input

Please note: Protective functions are supplementary safeguards and do not replace correct component selection, wiring, fusing and professional installation.

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Compatibility & Installation

• Confirm that the controller voltage matches the battery's nominal and fully charged voltage.
• The battery, BMS, fuse, connectors and power cables must safely support the controller's programmed current.
• Check that the motor phase connector is compatible with the supplied MT60 connection.
• Verify the Hall-sensor connector, throttle, PAS and brake pin arrangements before connection.
• Use only a compatible OMD-protocol display supplied or confirmed for this controller.
• A matching display connector does not guarantee software or communication compatibility.
• Disconnect the battery before installing or changing any controller wiring.
• Never reverse the positive and negative battery connections, as incorrect polarity may permanently damage the controller.
• Complete the self-learning procedure with the driven wheel safely raised from the ground.
• Mount the controller securely in a ventilated position with suitable heat transfer and protection from impact.
• Professional electrical installation is strongly recommended.

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Package Contents

• 1 x 40A YF 15-FET brushless motor controller with MT60 phase connector

Please note: The display, motor, battery, throttle, PAS sensor, brake levers and additional wiring components are not included unless specifically shown or stated in the listing.

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Shipping, Guarantee & Support

• Free Shipping: Free UK shipping is included with this product.
• Same-Day Dispatch: Orders placed before 4 PM Monday to Friday are normally dispatched on the same working day.
• UK-Based Stock: Dispatched from our UK warehouse for fast and reliable delivery.
• Buy with Confidence: We offer a money-back guarantee or warranty to give you peace of mind when making your purchase.
• Compatibility Support: Please contact us before ordering if you need a compatible OMD display or are unsure about your battery, motor or wiring.
• Customer Support: Your satisfaction is very important to us. Should you have any questions or experience a problem with your order, please contact us and we will do our best to assist you.