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BST-I Fast Response AC Current Transmitter for Industrial Control

A fast, high-accuracy AC current transmitter with 0.1% accuracy, ≤100ms response, and three-terminal isolation for reliable PLC/DCS integration.
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BST-I AC DC Current Transmitter

BST-I Current Transmitter showing reliable industrial signal measurement conversion

Reliable Industrial Signal Measurement & Conversion

BST-I is a current transmitter designed around “Reliable Industrial Signal Measurement & Conversion.” Supports AC0~15A, AC for stable industrial signal measurement and system integration. The sensing structure converts the physical process variable into a clear signal for industrial monitoring and automation. The confirmed values highlighted here are AC0~15A, AC. The feature is directly relevant to power distribution, electrical monitoring and industrial process projects. Improve measurement clarity and maintenance efficiency in power distribution applications, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

BST-I Current Transmitter showing low-power operation for long-term monitoring

Low-power Operation for Long-term Monitoring

BST-I is a current transmitter designed around “Low-power Operation for Long-term Monitoring.” Reduces module power demand for long-term continuous operation inside automation cabinets. The stated operating range, accuracy, response, overload or stability feature supports more dependable data under changing field conditions. The confirmed values highlighted here are 1.5W. The feature is directly relevant to power distribution, electrical monitoring and industrial process projects. Reduce cabinet heat and power demand during continuous operation, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

BST-I Current Transmitter showing low-power operation for long-term monitoring

Slim DIN Rail Design Saves Cabinet Space

BST-I is a current transmitter designed around “Slim DIN Rail Design Saves Cabinet Space.” Provides clear switching, alarm or relay functions for equipment control and interlocking. The alarm, relay, switching or control function turns the measured condition into a clear action for pumps, valves, warning devices or equipment interlocks. The confirmed values highlighted here are 35mm. The feature is directly relevant to power distribution, electrical monitoring and industrial process projects. Respond faster to abnormal conditions and equipment control demands, helping engineers keep the installation, inspection and signal path easier to manage during long-term operation.

Working Principle Diagram

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Technical Specifications

Rated Input Current:AC 0–1 A / 0–5 A / 0–10 A full-range support; supports custom specifications


Input Voltage Drop (at 5A Rated Current):≤0.3 VA; compatible with high-precision CTs for low loads


Measurement Principle:True RMS sampling; compatible with distorted and non-sinusoidal variable-frequency waveforms


Compatible Signal Frequency:40–400 Hz; compatible with both power frequency and intermediate frequency


Maximum Output Load Resistance (4–20 mA):≤550 Ω


Minimum Output Load Impedance:≥10 kΩ


Step Response Time (90% Steady-State Output):≤200 ms


Temperature Drift Coefficient (Across the Entire Operating Temperature Range):≤50 ppm/°C FS


Independent Linearity Error:±0.05% FS


Overall Accuracy of the Unit @ 25°C Ambient Temperature:±0.2% FS (Class 0.2)


Output Channel Specifications:1 input, 1 isolated output; optional RS485 Modbus


Standard Transmitter Output Signal:4–20 mA, 0–20 mA, 0–5 V, 1–5 V, 0–10 V, –1–5 V, RS485

Dimension Chart

L*W*H : 108mm x 25.4mm x 47mm

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Wiring Diagram

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