DFRobot
LED Current Meter 50A (Green)
This panel-mount LED current meter displays DC current readings from 0 to 50A on a bright green 3-digit LED display. It features reverse connection protectio...
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This panel-mount LED current meter displays DC current readings from 0 to 50A on a bright green 3-digit LED display. It features reverse connection protection to prevent damage, and requires just four wires to install — no additional circuitry or components needed.
With a 4–30V DC power supply range and 2% accuracy, it's a practical solution for monitoring current in robotics, power supplies, battery systems, and other DC circuits.
Specifications
- Measurement Range – 0–50A DC
- Power Supply Voltage – 4–30V DC
- Display – 3-digit 0.56" green LED
- Accuracy – 2%
- Panel Cutout – 45.5 × 26.5 mm (1.79 × 1.04 in)
- Overall Dimensions – 48 × 29 × 21 mm (1.89 × 1.14 × 0.83 in)
Key Features
- Reverse Connection Protection – Prevents damage from incorrect wiring
- Simple 4-Wire Installation – No extra circuitry required
- Panel Mount Design – Standard cutout for easy enclosure integration
- Includes Shunt Resistor – External shunt for high-current measurement
Ideal For
- Robotics and motor current monitoring
- Power supply and battery systems
- Solar and charging circuits
- Bench power supply builds
Package Contents
- 1× LED Current Meter 50A (Green)
- 1× Shunt Resistor
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- shunt resistor
- A very low-value resistor placed in the current path so the board can measure the tiny voltage drop across it and calculate current. Its resistance and tolerance affect the maximum current range, heat produced and accuracy of the readings.
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