HY 25-P , HY25-P

HY25-P Hall Effect Current Sensor – Precision Protection at Every Moment, Built for Industrial & Energy Power Systems

HY25-P Precision Control, Instant Response

In modern industrial control and power conversion systems, a high-accuracy, highly stable current sensor is essential. The LEM HY25-P open-loop Hall effect current sensor is precisely engineered to meet this critical need.

Using advanced Hall effect and openloop technology, it accurately captures DC, AC, and pulse current signals over a measurement range of 5 A to 25 A – easily handling demanding applications under various load conditions. Whether in a precision laboratory or a harsh industrial environment, you can count on its reliable performance.

HY25-P Four Key Advantages – Unlock Hard-Core Power

Ultra-High Accuracy – Safety at Every Milliampere

Measurement accuracy not only affects data but also the safety of core loads and electronic components:

Linearity & accuracy: Within the full temperature range, linearity is ±1% and measurement accuracy is ±1%, ensuring consistent, stable output.

Wide frequency response: Covers DC to 50 kHz – significantly better than many competing products.

Ultra-fast response: Only 3 µs response time captures instantaneous overload currents before faults occur, providing robust protection for sensitive equipment such as soft starters and variable frequency drives.

Double Electrical Isolation & Compact PCB Mounting

The device incorporates galvanic isolation between the highpower primary circuit and the low-power electronic circuit, eliminating leakage currents and commonmode noise. The compact, PCB-mount design allows flexible layout even in space-limited applications.

Overload Protection & Wide Operating Temperature – Industrial Grade Ruggedness

Builtin overload protection withstands short-duration peak currents up to 50 times the rated value. The operating temperature range of 10°C to +80°C ensures stable operation in freezing outdoor conditions or hot summer factory floors.

Analog Voltage Output – Easy Integration with Any System

The output is a ratiometric analog voltage (sensitivity 38.5 mV/A), which connects directly to embedded systems, PLCs, and data acquisition modules – no extra signal conditioning circuitry is required, greatly simplifying development.

HY25-P Wide Application Scope – Powering Many Industries

The HY25-P is used in a broad range of advanced applications:

PV inverters and wind turbine converters – enabling precise MPPT tracking.

UPS and switch-mode power supplies – protecting critical loads in real time.

EV OBC (on-board charger) and charging piles – supporting BMS battery management.

Industrial VFDs and servo drives for elevators, forklifts, and other machinery – as a core feedback element.

Railway traction converters and substation protection relays – playing a critical role in system safety.

From precision manufacturing to household electricity safety, the HY25-P delivers industrialgrade reliability.

HY25-P Premium Materials & Genuine Quality Assurance

The HY25-P is manufactured by LEM – a world leader in sensor technology. Produced in Switzerland / EU, it meets CE and RoHS environmental and safety standards and enjoys an excellent industry reputation. The through-hole module package requires ±12 V to ±15 V dual supply (maximum current consumption only 10 mA). Its extremely low power dissipation eliminates the need for additional cooling design.

Always purchase from authorized distributors or legitimate channels to avoid refurbished or counterfeit parts, ensuring the safety and service life of your end equipment.