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ACS712 30A Current Sensor Module

SKU: M40W0PKWLA
★★★★ ★ ★
4.7 (88 reviews)
The ACS712 30A Current Sensor Module is a Hall-effect-based current sensing module designed to accurately measure both AC and DC currents up to ±30A. Built around the Allegro ACS712ELC-30A current sensor IC, the module provides an analog voltage output that is directly proportional to the measured current while maintaining galvanic isolation between the measured current path and the control circuitry...
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The ACS712 30A Current Sensor Module is a Hall-effect-based current sensing module designed to accurately measure both AC and DC currents up to ±30A. Built around the Allegro ACS712ELC-30A current sensor IC, the module provides an analog voltage output that is directly proportional to the measured current while maintaining galvanic isolation between the measured current path and the control circuitry for enhanced safety and reliability.

Operating from a 5V DC supply, the module offers a sensitivity of 66mV/A for the 30A version, allowing precise current measurements in motor control, battery management systems, power monitoring, overcurrent protection, inverters, solar energy systems, and industrial automation. The ACS712 features a low-resistance internal conductor, fast response time, and low-noise analog output, making it suitable for real-time current monitoring applications. Compatible with Arduino, ESP32, STM32, Raspberry Pi (with ADC where required), PIC, AVR, and other microcontrollers, the ACS712 30A module is widely used in embedded electronics and IoT projects.

Key Features

  • Based on the Allegro ACS712 Hall-effect current sensor IC
  • Measures both AC and DC current
  • Current measurement range up to ±30A
  • Hall-effect sensing with electrical isolation
  • Analog voltage output proportional to current
  • Sensitivity of 66mV/A (30A version)
  • 2.1kVRMS isolation voltage between current path and signal pins
  • Low internal conductor resistance (approximately 1.2mΩ)
  • Fast response time (5µs typical)
  • Low-noise analog signal output
  • Operates from a single 5V supply
  • Compact PCB module with screw terminals
  • Easy interfacing with Arduino, ESP32, STM32, Raspberry Pi, AVR, and PIC
  • Ideal for power monitoring and overcurrent detection

Shipping & Returns

Orders placed before 3 PM IST will be shipped on the same day (excluding Sundays and Public holidays) through our shipping partners. In rare cases, the pickup may get delayed during Public holidays / Bandh / Environmental disturbances.

Specifications

Specifications:

Module Type: Hall-Effect Current Sensor Module
Sensor IC: ACS712ELC-30A
Measurement Type: AC and DC Current
Current Measurement Range: ±30A
Operating Voltage: 5V DC
Supply Voltage Range: 4.5V to 5.5V DC
Output Type: Analog Voltage
Output Voltage at 0A: Approximately VCC/2 (2.5V Typical)
Sensitivity: 66mV/A
Bandwidth: 80kHz
Response Time: 5µs (Typical)
Isolation Voltage: 2.1kVRMS Minimum
Internal Conductor Resistance: Approximately 1.2mΩ
Total Output Error: ±1.5% (Typical at 25°C)
Supply Current: Approximately 10–13mA
Operating Temperature: -40°C to +85°C
Storage Temperature: -65°C to +150°C
Module Dimensions: Approximately 31mm × 13mm
Mounting Type: PCB Module with Through-Hole Pins and Screw Terminals
Compatibility: Arduino UNO, Nano, Mega, ESP32, STM32, Raspberry Pi (with ADC where required), PIC, AVR, 8051 and other analog-input microcontrollers

Additional Resources

Current Sensor Module.PDF

FAQ

1. What is the ACS712 30A Current Sensor Module used for?

The ACS712 30A module is used to measure both AC and DC currents up to ±30A in applications such as battery monitoring, motor control, power measurement, solar energy systems, overcurrent protection, and industrial automation.

2. Can the ACS712 30A measure both AC and DC current?

Yes. The ACS712 Hall-effect sensor is capable of measuring both alternating current (AC) and direct current (DC) with a single analog output.

3. Is the ACS712 30A module compatible with Arduino and ESP32?

Yes. The module is compatible with Arduino, ESP32, STM32, AVR, PIC, and Raspberry Pi (with an external ADC where required). Its analog output can be read directly using the ADC of most microcontrollers.

4. What is the output sensitivity of the ACS712 30A version?

The 30A version has an output sensitivity of 66mV per ampere, with an output voltage centered around 2.5V when no current is flowing.

5. What is the advantage of using Hall-effect current sensing?

Hall-effect sensing provides electrical isolation between the measured current and the output circuitry, allowing safe current measurement with low insertion loss, fast response, and the ability to measure both AC and DC currents.