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ACS712 5A Current Sensor Module

SKU: 6GQCEBU37O
★★★★ ★ ★
4.3 (40 reviews)
The ACS712 5A Current Sensor Module is a Hall-effect-based current sensing module designed to accurately measure both AC and DC currents up to ±5A. Built around the Allegro ACS712ELCTR-05B current sensor IC, the module provides an analog voltage output that is directly proportional to the measured current while offering galvanic isolation between the current-carrying conductor and the output circuitry for...
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The ACS712 5A Current Sensor Module is a Hall-effect-based current sensing module designed to accurately measure both AC and DC currents up to ±5A. Built around the Allegro ACS712ELCTR-05B current sensor IC, the module provides an analog voltage output that is directly proportional to the measured current while offering galvanic isolation between the current-carrying conductor and the output circuitry for enhanced safety and reliability.

Operating from a 5V DC supply, the module offers a high sensitivity of 185mV/A, making it ideal for measuring low currents with excellent resolution. The ACS712 features a low-resistance internal conductor, fast response time, and low-noise analog output, making it suitable for battery monitoring, power supplies, motor control, overcurrent protection, solar energy systems, and embedded electronics projects. Compatible with Arduino, ESP32, STM32, Raspberry Pi (with ADC where required), PIC, AVR, and other microcontrollers, the ACS712 5A module is widely used in current monitoring and power management applications.

Key Features

  • Based on the Allegro ACS712 Hall-effect current sensor IC
  • Measures both AC and DC current
  • Current measurement range up to ±5A
  • Hall-effect sensing with electrical isolation
  • Analog voltage output proportional to current
  • High sensitivity of 185mV/A
  • 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 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, battery management, 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: ACS712ELCTR-05B
Measurement Type: AC and DC Current
Current Measurement Range: ±5A
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: 185mV/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 5A Current Sensor Module used for?

The ACS712 5A module is used to measure both AC and DC currents up to ±5A in applications such as battery monitoring, motor control, power measurement, solar energy systems, overcurrent protection, and embedded electronics projects.

2. Can the ACS712 5A measure both AC and DC current?

Yes. The ACS712 uses Hall-effect sensing technology to measure both alternating current (AC) and direct current (DC) with a single analog output.

3. Is the ACS712 5A 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). The analog output can be read directly using the ADC of most microcontrollers.

4. What is the output sensitivity of the ACS712 5A version?

The 5A version has a sensitivity of 185mV per ampere, providing higher measurement resolution than the 20A and 30A variants. The output voltage is centered around 2.5V when no current is flowing.

5. What is the advantage of using the ACS712 5A module?

The ACS712 5A module offers electrical isolation, low internal resistance, fast response, accurate current measurement, and the ability to measure both AC and DC currents without using an external shunt resistor, making it ideal for safe and reliable current sensing applications.