MCU-758 ACS758LCB-050B-PFF-T 50A Bidirectional Hall Effect Current Sensor Module

Accurately monitor high AC and DC currents with the Electroboat MCU-758 ACS758LCB-050B-PFF-T 50A Current Sensor Module. Built around Allegro’s precision Hall-effect IC, this module measures bidirectional currents up to ±50A with an ultra-low internal conductor resistance of 100 µΩ and 3000 RMS galvanic isolation—making it ideal for solar inverters, EV battery management, motor control, and industrial power monitoring.

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Tags acs758 lcb 050b mcu 758 current sensor 50a hall current sensor acs758 050b module electroboat current sensor 50a ac dc current module hall effect current module

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Product Details :

The Electroboat MCU-758 ACS758LCB-050B-PFF-T Hall Effect Current Sensor Module provides an economical and precise solution for high-current AC and DC sensing in industrial, commercial, and DIY power electronics applications. Powered by Allegro MicroSystems' ACS758 sensor IC, this module uses a monolithic Hall IC circuit to measure magnetic fields generated by current flowing through its primary copper conduction path.

Capable of measuring bidirectional currents up to ±50A, the onboard primary conductor features an extremely low resistance of approximately 100 µΩ, keeping power loss and internal thermal heating to an absolute minimum. The primary current path is electrically isolated from the sensor electronics (up to 3000 Vrms), eliminating the need for expensive opto-isolators when interfacing high-voltage circuits directly with microcontrollers such as Arduino, ESP32, STM32, or Raspberry Pi.

Key Features and Benefits

Bidirectional ±50A Current Sensing: Accurately measures both AC and DC positive and negative current flow.
High Galvanic Isolation (3000 Vrms): Fully isolates the primary high-current path from low-voltage microcontroller logic for maximum circuit safety.
Ultra-Low Conductor Resistance (100 µΩ): Minimizes power dissipation, voltage drops, and thermal heating during continuous high-load operation.
Factory-Calibrated Sensitivity (40 mV/A): Delivers a proportional analog output voltage centered at VCC/2 (2.5V at 0A) for straightforward ADC sampling.
Integrated Noise Filtering: Built-in filter capacitor pins allow easy bandwidth tuning to suppress output ripple and electrical noise.

Technical Specifications

Parameter	Specification
Sensor IC	Allegro ACS758LCB-050B-PFF-T
Current Measurement Range	±50A (AC or DC)
Sensitivity	40 mV/A
Operating Supply Voltage (VCC)	3.3V to 5.0V DC
Zero Current Output Voltage	VCC / 2 (~2.5V at 5V Supply)
Conductor Resistance	~100 µΩ (0.0001 Ohm)
Isolation Voltage	3000 Vrms (Primary Conductor to Sensor Pins)
Bandwidth	120 kHz
Operating Temperature	-40°C to +150°C

How to Use

Connect Power Supply: Connect VCC to 5V DC and GND to your microcontroller's ground.
Connect Primary Load: Pass the high-current line you wish to measure through the thick primary current terminal pins (IP+ and IP-).
Connect Signal Output: Wire the OUT terminal pin to an analog input pin (ADC) on your Arduino or ESP32 board.
Calculate Current in Code:
- At 0 Amps, the output voltage is approximately 2.5V ( $V_{CC}/2$ ).
- Calculate current using: $ext{Current (A)} = rac{V_{OUT} - 2.5 ext{V}}{0.040 ext{V/A}}$ .

Applications

Solar Photovoltaic (PV) Inverters & MPPT Charge Controllers
EV Battery Management Systems (BMS) & State-of-Charge (SoC) Monitoring
Motor Over-Current Protection & Speed Controllers
Uninterruptible Power Supplies (UPS) & Industrial Switched-Mode Power Supplies (SMPS)
STEM, Smart Grid, and Internet of Things (IoT) Energy Metering Projects

Package Includes

1 x MCU-758 ACS758LCB-050B-PFF-T 50A Current Sensor Module

Shipping & Delivery

Free shipping on orders above ₹999 across India.
Dispatched within 1-3 business days.
Expected delivery: 3-7 business days depending on location.
Secure ESD and cushioned packaging to ensure safe transit of electronic components.