2-6S 60A Bidirectional Self-Starting ESC Speed Controller, Model A/B/C/D

ZMR 2-6S 60A Bidirectional Self-Starting Brushless Speed Controller for High-Load DIY Power Tools and Industrial Motor Applications
The ZMR 60A Bidirectional Brushless ESC is a heavy-duty electronic speed controller built for DIY modification and industrial brushless motor systems. With a working voltage range of 7V to 25.2V (2-6S LiPo) and a maximum continuous current of 60A, it delivers up to 1000W of peak power output – making it well-suited for demanding applications such as water pumps, fans, knife grinders, hand grinders, and electric hand drills. Its broad speed range supports motors from 2-pole to 14-pole configurations, covering up to 224,000 RPM at the high end.

Model A – Power-On Auto-Start:Motor starts automatically at full speed when power is applied. No external control input required.
Model B – Dial Switch Start/Stop:Start and stop functions are controlled via a dial switch. Motor runs at full speed once started.
Model C – Rotary Switch Speed Control:Motor start, stop, and speed are all controlled through a single rotary switch, allowing variable speed operation.
Model D – Dial Switch Direction + Knob Speed Control:Speed is adjusted via a knob, while a dial switch controls stop and directional change. Forward and reverse rotation can be switched freely after the motor has started.

Model A – Power-On Auto-Start

Model B – Dial Switch Start/Stop

Model C – Rotary Switch Speed Control

Model D – Dial Switch Direction + Knob Speed Control

The controller is available in four variants – Model A, B, C, and D – each offering a different method of start, stop, speed, and directional control to suit varied use cases. For motors with a continuous load of up to 35A, this 60A-rated unit provides reliable operating headroom for extended run cycles. As heat generation is the primary concern with brushless regulators, forced cooling via air or water is strongly recommended for long-term high-load use. Built-in temperature, locked-rotor, and overcurrent protections further ensure safe and stable operation across all four variants.
Key Features

Input Voltage Range: Supports 7V to 25.2V (2-6S LiPo battery packs)
Maximum Continuous Current: Rated at 60A with a peak power output of 1000W
Recommended Motor Load: Suitable for motors drawing up to 35A continuous current
Four Control Variants: Model A (power-on auto-start), Model B (dial switch start/stop), Model C (rotary switch for start, stop, and speed), Model D (dial switch for direction control with separate speed knob)
Bidirectional Motor Control: Model D supports free switching between forward and reverse rotation after start-up
Maximum Speed Support: Up to 224,000 RPM for 2-pole motors, 74,000 RPM for 6-pole motors, 40,000 RPM for 12-pole motors, and 35,000 RPM for 14-pole motors
Temperature Protection: Built-in over-temperature shutdown to prevent damage during sustained operation
Locked-Rotor Protection: Detects stall conditions and responds to protect the motor and controller
Overcurrent Protection: Automatically limits current beyond the rated threshold to extend component life
DIY and Industrial Compatible: Designed for brushless power tools, pumps, fans, and grinding systems not for RC aircraft use

Applications

High-flow water pumps and fluid circulation systems
Industrial and high-capacity fans
Knife grinders and bench grinders
Hand grinders and angle grinders
Electric hand drills and rotary tools
Heavy-duty DIY brushless motor modification projects
Small-to-mid-scale industrial brushless drive systems