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Current Sensors · Open Loop · PCB & Compact

OTS Series

Compact high-bandwidth current sensing for photovoltaic and power-electronic systems.

The OTS family is an isolated open-loop Hall-effect current sensor platform for DC, AC, pulsed and mixed-current measurement. Its through-hole PCB format is designed for compact integration and is compatible with MC4-type photovoltaic connector arrangements.

20–50 ANominal current range
500 kHzTypical bandwidth
1 µsTypical response time
4.0 kVGalvanic isolation
ADISENS OTS compact PCB current sensors
Family overview

Five compact current ratings on one PCB platform

The OTS series covers 20 A, 25 A, 32 A, 40 A and 50 A nominal currents. All published references use a 5 V supply, proportional analog output, 500 kHz typical bandwidth and 4 kV isolation.

20 A±20 A measuring range
25 A±25 A measuring range
32 A±32 A measuring range
40 A±40 A measuring range
50 A±50 A measuring range
Product selection

OTS reference table

Click a reference to open its controlled technical datasheet in a new tab.

Reference Nominal current Measuring range Sensitivity Supply Accuracy Response Bandwidth Isolation Datasheet
OTS-20P3 PDF ↗ 20 A ±20 A 100 mV/A 5 V ±1% max. @25°C 1 µs 500 kHz 4.0 kV Open PDF ↗
OTS-25P3 PDF ↗ 25 A ±25 A 80 mV/A 5 V ±1% max. @25°C 1 µs 500 kHz 4.0 kV Open PDF ↗
OTS-32P3 PDF ↗ 32 A ±32 A 62.5 mV/A 5 V ±1% max. @25°C 1 µs 500 kHz 4.0 kV Open PDF ↗
OTS-40P3 PDF ↗ 40 A ±40 A 50 mV/A 5 V ±1% max. @25°C 1 µs 500 kHz 4.0 kV Open PDF ↗
OTS-50P3 PDF ↗ 50 A ±50 A 40 mV/A 5 V ±1% max. @25°C 1 µs 500 kHz 4.0 kV Open PDF ↗
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Engineering performance

Built for fast, compact electronic integration

500 kHz bandwidth

High-bandwidth measurement for fast dynamic current waveforms.

1 µs response

Fast step response for switched and pulsed-current applications.

4 kV isolation

Full galvanic isolation between primary and secondary circuits.

5 V supply

Single-ended 5 V supply with analog output centered around a 2.5 V offset.

Compact PCB format

Through-hole board-mount construction, compatible with MC4-type photovoltaic connector integration.

−40°C to +105°C

Operating-temperature range suited to demanding electronic equipment.

Standards & Compliance

Electrical-safety and environmental references

The supplied OTS datasheets identify IEC 61010-1 and EN 50178 as relevant electrical-safety references. The housing material is UL94-V0, and CE / RoHS / REACH documentation is available from ADISENS.

IEC 61010-1Electrical-safety reference for measurement and control equipment integration.
EN 50178Electronic equipment for use in power installations.
UL94-V0Moulded housing material flammability classification stated in the datasheets.
CE · RoHS · REACHApplicable conformity and environmental documentation available on request.
Applications

Best-fit applications for OTS

The application mapping below follows the supplied OTS technical datasheets.

Photovoltaic InvertersCompact current sensing in PV inverter electronics PV Combiner BoxesIsolated current measurement in photovoltaic collection systems SMPS Power SuppliesHigh-bandwidth current feedback in switching power supplies AC Speed ControllersCurrent measurement for motor-control electronics Welding Power SuppliesFast isolated measurement in electric-welder power stages
Selection support

Need help selecting the right OTS?

Share your nominal current, PCB architecture and application constraints with our technical team.

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Custom engineering

Need another current range or PCB integration?

Start from a standard OTS reference and define your required electrical and mechanical integration constraints.

Request a Custom Solution