LEM HAZ4000-SBI/SP1 High-Current Hall-Effect Sensor

HAZ4000-SBI/SP1 Five Key Advantages – Redefining High-Current Measurement

1. Microsecond Response – Capture Transients Instantly

Based on advanced open-loop Hall-effect technology, the HAZ4000-SBI/SP1 responds to input current changes with a delay time < 2 µs and reaches 90% of the final output value in < 10 µs. Whether you are measuring DC, AC, or pulsed currents, the sensor delivers real-time, accurate feedback to your control system, enabling fast and reliable system reactions.

2. ±1% Accuracy – Stable Across the Full Range

At the rated current of 4000A, the total error is ≤ ±1%, and the linearity error is ≤ ±0.5%. The electrical zero-current output is stable at 12 ± 0.08 mA. This excellent accuracy guarantees consistent measurement over long-term operation, providing trustworthy data for system decisions.

3. 17kV High-Voltage Isolation – Leading Safety Standard

The isolation voltage between primary and secondary circuits is 17 kV RMS / 50 Hz / 1 minute, with an insulation resistance > 1000 MΩ at 500 V DC. In high-voltage, high-risk environments such as power electronics and railway systems, electrical safety is paramount. The HAZ4000-SBI/SP1 sets a high bar with its industry-leading isolation withstand capability, building a solid safety barrier for both equipment and operators.

4. Rugged Construction – Reliable in Harsh Conditions

Wide operating temperature range of -25°C to +85°C (storage: -30°C to +90°C) and humidity tolerance up to 95% (non-condensing). The PBT housing meets UL 94-V0 flammability rating. Even in hot, humid, or vibration-prone industrial environments, the sensor stays stable and reliable. With a tolerable peak current of 30,000A, it provides ample headroom for system overloads.

5. 3 kHz Bandwidth – Covers Mainstream Industrial Frequencies

The frequency bandwidth (-3 dB, small signal) spans DC to 3 kHz, sufficient for the majority of industrial drive, power conversion, and grid monitoring applications. The wideband response delivers excellent performance for both fundamental and harmonic measurements, giving engineers a comprehensive view of system current characteristics.

HAZ4000-SBI/SP1 Flexible and Easy Integration

Standard 4-20 mA output – The most common analog signal interface in industrial automation. Seamlessly connect to PLCs, DCS, and other control systems, reducing integration cost and complexity.

±15 V bipolar supply – Low power consumption of only ±50 mA, compatible with most industrial power supplies.

Large aperture – 162 mm × 42 mm – The open-loop design allows multi-conductor cables or busbars to pass through directly. Flexible installation without cutting existing lines.

Compact weight of approx. 6 kg – Excellent size-to-power ratio among sensors of this rating, saving cabinet space. Suitable for rack or panel mounting.

Fujitsu F2023A connector – Standardised 6-pin secondary interface for reliable, easy wiring and maintenance.

Broad Industry Applications – Empowering Core Systems

Thanks to its outstanding high-current measurement capability and reliability, the HAZ4000-SBI/SP1 has been proven in many critical fields:

Drives & Welding – Welding machine output monitoring, variable-frequency drive current feedback control

Power Supplies – UPS, switch-mode power supply (SMPS) current monitoring and protection

Renewable Energy – Photovoltaic inverters, wind power converter current measurement

Energy Storage – Battery test systems, energy storage converter current monitoring

Smart Grids – Grid control, distribution automation high-current measurement

Railway – Traction systems, trackside power facility current monitoring

Industrial Automation – Current signal acquisition for PLC/DCS/PAC systems

Automotive – High-voltage battery management systems (BMS), brake-by-wire (BBW) for electric buses and commercial vehicles

Why Choose the HAZ4000-SBI/SP1?

The HAZ4000-SBI/SP1 is more than just a current sensor – it is your commitment to system safety, your insistence on measurement accuracy, and your guarantee of industrial reliability. Whether you are upgrading an existing production line, developing a next-generation power supply, or building an intelligent grid monitoring system, this 4000A sensor is the core choice you can trust.