LA 305-S/SP1 , LA305-S/SP1

LA305-S/SP1: High-Precision Closed-Loop Hall-Effect Current Sensor – Built for Demanding Applications

In power electronics, high-precision current measurement is the cornerstone of safe and efficient system operation. However, conventional current sensors often become the performance bottleneck due to accuracy errors, slow response, and external interference. For complex scenarios such as renewable energy generation, industrial drives, and rail transit, you need a measurement partner that is both accurate and reliable. The LA305-S/SP1 high-precision closed-loop Hall-effect current sensor is designed to overcome these limitations. Breaking through the performance constraints of regular sensors, it delivers outstanding accuracy, ultra-fast response, and strong immunity to interference – making it the preferred solution for current measurement in harsh industrial environments.

LA305-S/SP1 Four Core Advantages: Accurate, Fast, Stable, Safe

Closed-loop Hall technology with ±0.8% accuracy – say goodbye to measurement errors
The LA305-S/SP1 employs advanced closed-loop (compensated) Hall-effect technology, achieving industry-leading ±0.8% accuracy and better than ±0.1% linearity error. Its output current follows the primary current with a fixed ratio of 1:2000, providing high-fidelity real-time tracking of DC, AC, and pulsed currents. This delivers reliable, true-to-life current data to your control system.

Ultra-fast 500 ns response – capture microsecond transient signals
For fast overcurrent protection or precision control, response time is a critical sensor parameter. The LA305-S/SP1 excels in dynamic performance indicators such as response time and reaction time, enabling it to capture microsecond current transients in the circuit. This gives you valuable time for equipment safety and fine-grained control.

Galvanic isolation – a safety barrier in high-EMI environments
The LA305-S/SP1 provides high-strength galvanic isolation between the primary high-voltage, high-current circuit and the secondary low-voltage electronic circuit. It effectively blocks stray signal interference, ensuring the safe and stable operation of your back-end measurement and control circuits, while significantly improving equipment immunity in complex electromagnetic environments.

Full-temperature range stability – industrial reliability from -10°C to +85°C
From outdoor equipment in freezing winter to high-temperature factory floors, wide temperature adaptability is key to a sensor's practical value. The LA305-S/SP1 maintains excellent performance stability across the entire -10°C to +85°C temperature range. With outstanding temperature drift control, it ensures continuous, accurate operation under extreme conditions, delivering reliable performance throughout its service life.

LA305-S/SP1 Technical Specifications

LA305-S/SP1 Wide Range of Applications
Whatever your industry, the LA305-S/SP1 will bring reliable measurement capabilities to your equipment:

Industrial drives and variable frequency drives – Monitor motor current for overload protection and torque control, improving equipment efficiency.

Renewable energy – Accurately measure DC and AC current in solar inverters and wind power systems, helping convert green energy efficiently.

Welding equipment – Withstands high pulsed currents, ensuring stable welding power output.

Rail transit – Vibration-resistant and interference-immune, suitable for traction converters and auxiliary power supplies.

UPS and switch-mode power supplies – Real-time monitoring of input and output current to ensure safe and reliable power supply.

Why Choose the LA305-S/SP1?
Instead of endlessly comparing current sensors or worrying about insufficient accuracy or slow response, make the right choice once. The LA305-S/SP1 combines first-class closed-loop Hall technology, a precise turns ratio, and reinforced isolation to deliver a stable and reliable current measurement solution. Housed in a UL 94-V0 flame-retardant plastic case and RoHS compliant, it meets both quality and environmental standards.