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Current Sensors · Closed-Loop Flux-Gate · PCB Mount

MCT-C Series

Compact DC & AC earth-leakage and differential-current sensing.

The MCT-C family is a miniature closed-loop compensated current transducer based on a flux-gate principle. It measures DC, AC and mixed currents with galvanic isolation between the primary power circuit and the secondary electronics, making it particularly suitable for leakage-current, fault-current and differential-current detection in compact industrial and photovoltaic systems.

100–400 ANominal current range
Up to ±800 APrimary measuring range
2.5 kVIsolation voltage
<60 msResponse time
<±1%Accuracy @ IPN, 25°C
Ø11 mmPrimary conductor aperture
ADISENS MCT-C flux-gate current transducer
Measurement principle

Closed-loop flux-gate architecture for DC, AC and mixed currents

Unlike a conventional open-loop Hall sensor, the MCT-C uses a compensated flux-gate measurement principle. This architecture is particularly valuable when the application requires detection of DC components, AC leakage and mixed-current fault conditions with galvanic isolation.

DC + AC capabilityMeasures direct, alternating and mixed currents in the same compact sensor platform.
Compensated measurementClosed-loop architecture supports accurate differential and fault-current sensing.
Analog ±5 V outputAt ±IPN under the stated 10 kΩ load and 25°C test conditions.
Galvanic isolationPrimary high-power conductor remains electrically isolated from the secondary electronics.
References & Documents

MCT-C technical characteristics and datasheets

Three validated current ratings are available. Each reference links directly to its technical datasheet.

Reference Product code Nominal current Measuring range Supply Output @ ±IPN Accuracy Linearity Response Bandwidth Isolation Operating temp. Datasheet
MCT-C-100P4 PDF ↗ 11200100031200001 100 A ±200 A ±15 V ±5 V <±1% IPN <±0.5% IPN <60 ms DC 40…7000 Hz 2.5 kV −20 to +85°C Open PDF ↗
MCT-C-200P4 PDF ↗ 11200200031200001 200 A ±400 A ±15 V ±5 V <±1% IPN <±0.5% IPN <60 ms DC 40…11000 Hz 2.5 kV −20 to +85°C Open PDF ↗
MCT-C-400P4 PDF ↗ 11200400031200001 400 A ±800 A ±15 V ±5 V <±1% IPN <±0.5% IPN <60 ms DC 40…18000 Hz 2.5 kV −20 to +85°C Open PDF ↗
Custom MCT-C Need another current rating or project-specific differential-current solution?
Request a Custom Product →
Best-fit applications

Protection-oriented current measurement

MCT-C is positioned primarily as a leakage, fault and differential-current sensor rather than a general-purpose phase-current transducer.

Earth-Leakage DetectionLeakage-current monitoring in transformerless power-conversion installations. PV Human-Contact ProtectionFirst-level current-fault protection functions in photovoltaic arrays. Power-Source Fault DetectionDetection of leakage current in power sources and stacked DC-source architectures. Differential Current MeasurementSingle- or three-phase differential-current measurement up to ±30 A per wire, AC or DC. Motor-Inverter Fault DetectionSymmetrical fault-current monitoring downstream of motor inverters. Compact Industrial EquipmentPCB-mounted fault-current sensing where installation space is limited.
Mechanical & electrical integration

Compact PCB-mount architecture

Ø11 mmPrimary-conductor aperture.
4 signal pins0.6 × 0.6 mm² secondary connection.
2 fixation pinsØ2 mm PCB mechanical retention.
25 gTypical sensor mass.
PBT G30/G15Housing material, UL94-V0.
100°C max.Maximum primary-conductor temperature.
Pin definition

Simple ±15 V analog interface

MMeasurement output — analog image of the primary current.
GNDSignal ground — 0 V reference for the output signal.
−VCCNegative supply — −15 V DC.
+VCCPositive supply — +15 V DC.
Flux-gate installation note

The transducer injects a 500 Hz square wave into the primary circuit. In low-impedance primary circuits this may induce an AC current. The controlled datasheets specify the resulting output contribution for each current rating when primary impedance is at least 10 Ω.

MCT-C-100P4 ≤0.8% of IPNMCT-C-200P4 ≤0.5% of IPNMCT-C-400P4 ≤0.3% of IPN
Standards & Compliance

Industrial electrical-safety integration

IEC 61010-1Safety framework for electrical measurement and control equipment integration.
EN 50178Electronic equipment for use in power installations.
UL94-V0PBT G30/G15 insulated plastic housing classification.
CE · RoHS · REACHConformity and environmental documentation available from ADISENS.
Selection support

Designing an earth-leakage or differential-current function?

Share the monitored conductors, expected DC and AC residual-current content, primary impedance and protection objective with our technical team.

Request Technical Support →
Custom engineering

Need another current range or integration format?

ADISENS can review project-specific leakage-current and differential-current sensing requirements.

Request a Custom MCT-C →