Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Series	CHB-200S / CHB-300S / CHB-500S
Measurement Principle	Closed-Loop Hall Effect
Rated Input Current	200A, 300A, or 500A (Selectable)
Output Signal	50mA ± 10% at rated current
Supply Voltage	±12V to ±15V DC
Accuracy Class	≤ 0.5% at 25°C
Response Time	≤ 1 µs
Dielectric Strength	2.5kV AC for 1 minute
Operating Temperature	-25°C to +85°C
Mounting Type	PCB Mount with Screw Terminals

6 reviews

Anonymous

Mar 19, 2026

Rating: 4/5

Good accuracy, slightly bulky

Accuracy is spot on compared to my reference meter. The only downside is that it takes up a bit more space on the PCB than I anticipated, but the performance makes up for it.

Anonymous

Mar 18, 2026

Rating: 4/5

Great value for money

For the price point, you cannot beat the specifications. It performs similarly to much more expensive brands. Delivery was also faster than expected.

Anonymous

Mar 15, 2026

Rating: 5/5

Zero drift after warmup

After a brief warmup period, the zero drift is negligible. I've been running continuous tests for 48 hours and the readings remain consistent. A solid choice for precision monitoring.

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect for my inverter project

The CHB-300S module works flawlessly in my solar inverter build. The response time is incredibly fast, and the output signal is very stable even under fluctuating loads. Highly recommended for industrial applications.

Anonymous

Mar 06, 2026

Rating: 5/5

Reliable high-current sensing

I am using the 500A version for an EV charging station prototype. It handles the high current without heating up excessively and provides isolated measurements which is crucial for safety.

Anonymous

Mar 05, 2026

Rating: 5/5

Excellent build quality

The casing feels robust and the terminals are solid. Setup was straightforward with the standard ±15V supply. No noise issues detected in the output signal.

5 FAQ

Q: Is the output ratiometric?

A: No, the output is a constant current source (50mA at rated input), not ratiometric to the supply voltage. This ensures stable readings even if the supply voltage fluctuates within the specified range.

Q: Does this sensor require external calibration?

A: No, the CHB series comes factory-calibrated. However, for ultra-high precision applications, we recommend verifying the offset voltage upon initial installation.

Q: What is the exact aperture size for the primary conductor?

A: The aperture dimensions vary slightly by model. The CHB-200S fits up to 12mm, while the CHB-500S accommodates conductors up to 18mm. Please refer to the specific datasheet for your chosen model.

Q: Are these suitable for DC and AC measurements?

A: Yes, the Closed-Loop Hall Effect principle allows for accurate measurement of both AC and DC currents, as well as complex waveforms, with galvanic isolation between the primary and secondary circuits.

Q: Can I use a single 24V supply instead of dual polarity?

A: These modules are designed for bipolar supply voltages (±12V to ±15V). Using a single 24V rail without creating a virtual ground may damage the internal circuitry or result in incorrect output.

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