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The ACS71240 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 120 kHz) and low conduction resistance (0.6 mΩ), it minimizes energy loss and offers a fast response time of less than 5 µs. Pololu 5243
The ACS71240 current sensor module is a modern solution based on the Hall effect, providing electrical isolation of the current path. This allows it to be placed anywhere in an electrical circuit while ensuring safe and precise current measurement. The sensor features a noise-resistant design, eliminating the influence of uniform magnetic fields such as the Earth's field. With a low conduction path resistance (0.6 mΩ) and 2 oz copper layers, energy losses are minimized.

The sensor provides a wide-band analog output (up to 120 kHz) proportional to AC or DC current, with a response time of less than 5 µs. A unique feature of this model is its voltage output independent of supply voltage, ensuring resistance to interference. The built-in overcurrent detection function with a 1.5 µs response time allows for rapid short-circuit detection and system protection. The module operates over a wide temperature range (-40°C to 125°C), making it ideal for automotive and industrial applications.
Multiple mounting methods allow for easy circuit integration – you can solder wires directly to the holes, use solderless ring terminals, or attach screw terminals. The largest holes accommodate wires up to 8 AWG and M3.5 screws, while additional 3.5 mm and 5 mm holes support screw connectors or header pins.

The module is ideal for applications requiring precise current measurement, such as energy management systems, battery monitoring, protection circuits, and industrial electronics. Its electrical isolation allows safe current monitoring in high-voltage systems, while its low power consumption makes it suitable for mobile and battery-powered devices. With a user-friendly interface and compact design, the sensor is an excellent choice for both professionals and hobbyists. It can be used in prototyping, testing, and as a component in fully developed measurement systems. The ease of integration and broad range of applications make the ACS71240 an essential tool in modern electronics.
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The ACS71240 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 120 kHz) and low conduction resistance (0.6 mΩ), it minimizes energy loss and offers a fast response time of less than 5 µs. Pololu 5244
The ACS71240 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 120 kHz) and low conduction resistance (0.6 mΩ), it minimizes energy loss and offers a fast response time of less than 5 µs. Pololu 5245
The ACS71240 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 120 kHz) and low conduction resistance (0.6 mΩ), it minimizes energy loss and offers a fast response time of less than 5 µs. Pololu 5246
Precision Hall effect current sensor offering galvanic isolation, wide 150 kHz bandwidth and the ability to measure AC and DC current with very low power loss. With differential measurement and immunity to magnetic interference, it is perfect for applications requiring accurate current monitoring, such as power supplies, converters or motor control systems. Pololu 5296
Large Carrier version current sensor from Pololu, model 5297, based on the ACS37220LEZATR-100B5 IC, designed for measuring current in the range from -100 A to +100 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5297
Large Carrier version current sensor from Pololu, model 5298, based on the ACS37220LEZATR-150B5 IC, designed for measuring current in the range from -150 A to +150 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5298
Large Carrier version current sensor from Pololu, model 5299, based on the ACS37220LEZATR-200B5 IC, designed for measuring current in the range from -200 A to +200 A at a 5 V supply in applications requiring galvanic isolation and analog output. Pololu 5299
Compact current sensor Pololu 5300 based on the CT432-HSWF20MR, designed for current measurement in the range from -20A to +20A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5300
Compact current sensor Pololu 5301 based on the CT432-HSWF30MR, designed for current measurement in the range from -30A to +30A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5301
Compact current sensor Pololu 5302 based on the CT432-HSWF50MR, designed for current measurement in the range from -50A to +50A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5302
Compact current sensor Pololu 5303 based on the CT432-HSWF65MR, designed for current measurement in the range from -65A to +65A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5303
Compact current sensor Pololu 5306 based on the CT432-HSWF50DR, designed for measuring current in the 0–50A range at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5306
Compact current sensor Pololu 5308 based on the CT432-HSWF70DR, designed for measuring currents from 0 to 70A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5308
Compact current sensor Pololu 5310 based on the CT433-HSWF20MR, designed for measuring currents up to ±20A at 3.3V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5310
Compact current sensor Pololu 5311 based on the CT433-HSWF30MR, designed for measuring currents up to ±30A at 3.3V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5311
Compact current sensor Pololu 5313 based on the CT433-HSWF50MR, designed for measuring currents up to ±50A at 3.3V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5313
Compact current sensor Pololu 5315 based on the CT433-HSWF70MR, designed for measuring currents up to ±70 A at a 3.3 V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5315
The Pololu 5318 current sensor provides electrically isolated unidirectional AC and DC current measurement from 0 A to 50 A. Based on the Allegro CT433-HSWF50DR with TMR technology, the module offers up to 1 MHz bandwidth and an analog interface. Pololu 5318
Pololu 5319 current sensor provides electrically isolated DC current measurement in the range of 0 A to 65 A. Based on the Allegro CT433-HSWF65DR sensor, the module uses TMR technology and offers a bandwidth of up to 1 MHz together with an analog interface. Pololu 5319
The ACS71240 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 120 kHz) and low conduction resistance (0.6 mΩ), it minimizes energy loss and offers a fast response time of less than 5 µs. Pololu 5243