ZLCP Series High-Frequency AC/DC Current Probes

The ZLCP Series uses closed-loop Hall-effect sensing technology to measure DC, pulse, and high-frequency AC currents. The series covers frequencies from DC up to 120MHz, with multiple models offering continuous current ratings of 30A, 50A, and 70A.

A dual-range design combines milliamp-level small-signal resolution with high-current transient measurement. A standard BNC output provides compatibility with major oscilloscope brands, making the probe suitable for power supplies, new-energy systems, motor drives, and power-device testing.

DC ~ 120MHz Maximum Bandwidth

70Arms Maximum Continuous Current

Dual Range High / Low Current Ranges

1mA Minimum Resolution

Advantages of ZLCP High-Frequency AC/DC Current Probes

Multiple models covering DC to 120MHz for capturing high-speed transient currents

Dual-range design with resolution down to 1mA on the low-current range

One-touch demagnetization and automatic zero adjustment in approximately 3 seconds

Overload alarm and jaw-lock status indication help reduce measurement errors

600V CAT II / 300V CAT III safety rating

High linearity, low noise, and flat high-frequency response

Standard BNC output compatible with major oscilloscope brands

Applications of ZLCP High-Frequency AC/DC Current Probes

R&D and performance testing of switching and linear power supplies

Testing of electric vehicles, energy storage systems, PV inverters, and EV chargers

Debugging of inverter-based appliances, servo motors, and industrial drives

Performance testing of LED drivers, electronic ballasts, and transformers

Dynamic current testing of MOSFETs, IGBTs, and other power devices

Testing of locomotive, avionics, and rail-transit power systems

Power-electronics and electrical-engineering laboratory teaching

Current waveform analysis for UPS systems, welding equipment, and industrial-control devices

Model Overview

ZLCP0330D

30MHz / 30A

30A / 5A Dual Range

ZLCP0350D

30MHz / 50A

50A / 7.5A Dual Range

ZLCP0370D

30MHz / 70A

70A / 10A Dual Range

ZLCP0530D

50MHz / 30A

30A / 5A Dual Range

ZLCP0550D

50MHz / 50A

50A / 7.5A Dual Range

ZLCP1230D

120MHz / 30A

30A / 5A Dual Range

Technical Specifications

Parameter	ZLCP0330D 30MHz / 30A	ZLCP0350D 30MHz / 50A	ZLCP0370D 30MHz / 70A	ZLCP0530D 50MHz / 30A	ZLCP0550D 50MHz / 50A	ZLCP1230D 120MHz / 30A
Bandwidth (-3dB)	DC~30MHz	DC~30MHz	DC~30MHz	DC~50MHz	DC~50MHz	DC~120MHz
Rise Time	≤11.6ns	≤11.6ns	≤11.6ns	≤7ns	≤7ns	≤2.92ns
Continuous Rated Current	30Arms	50Arms	70Arms	30Arms	50Arms	30Arms
Peak Pulse Current	50Apk	75Apk	100Apk	50Apk	75Apk	50Apk
Dual-Range Configuration	30A / 5A	50A / 7.5A	70A / 10A	30A / 5A	50A / 7.5A	30A / 5A
Output Sensitivity	30A：0.1V/A 5A：1V/A	50A：0.1V/A 7.5A：1V/A	70A：0.05V/A 10A：0.5V/A	30A：0.1V/A 5A：1V/A	50A：0.1V/A 7.5A：1V/A	30A：0.1V/A 5A：1V/A
Resolution	30A：10mA 5A：1mA	50A：10mA 7.5A：1mA	70A：20mA 10A：2mA	30A：10mA 5A：1mA	50A：10mA 7.5A：1mA	30A：10mA 5A：1mA
DC Measurement Accuracy	±1%±10mA (30A) ±1%±1mA (5A)	±1%±10mA (50A) ±1%±1mA (7.5A)	±1%±20mA (70A) ±1%±2mA (10A)	±1%±10mA (30A) ±1%±1mA (5A)	±1%±10mA (50A) ±1%±1mA (7.5A)	±1%±10mA (30A) ±1%±1mA (5A)
Overcurrent Alarm Threshold	≥50Apk / ≥5Apk	≥75Apk / ≥7.5Apk	≥100Apk / ≥10Apk	≥50Apk / ≥5Apk	≥75Apk / ≥7.5Apk	≥50Apk / ≥5Apk
Oscilloscope Input Requirement	≥100kΩ, 1MΩ input impedance recommended
Power Supply	DC12V / 1A

Note: The probe propagation delay is listed as TBD in the current specification.

Structure & Functions

5mm Sensor Jaw

Integrated magnetic core and Hall sensing element. For best accuracy, position the conductor near the geometric center of the jaw.

LOCK / UNLOCK Control

Use the slider to open or lock the jaw. Confirm that the jaw is fully closed before taking measurements.

Zero Auto Demagnetization & Adjustment

Press Zero briefly to start demagnetization and zero adjustment. One cycle takes about 3 seconds; repeat after changing range or after an overload event.

Range Switching

Cycle between the high- and low-current ranges and select the appropriate range for the current under test.

Overload Alarm

An alarm is issued when the measured current exceeds the peak value of the active range. Stop the measurement immediately and switch to the higher range.

Standard BNC Output

Connect the probe to the oscilloscope using the supplied 100cm 50Ω shielded coaxial cable. A 1MΩ oscilloscope input is recommended.

Mechanical & Environmental Specifications

Mechanical Item	Specification
Maximum Jaw Diameter	5mm
Main Cable Length	100cm
BNC Coaxial Cable Length	100cm
Probe Handle Dimensions	151 × 36 × 19mm
Control Box Dimensions	90 × 44 × 20mm
Net Weight	Approx. 228g

Environmental Item	Specification
Operating Temperature / Humidity	0°C to 40°C, RH ≤80%, non-condensing
Storage Temperature / Humidity	-10°C to 50°C, RH ≤80%, non-condensing
Safety Rating	600V CAT II / 300V CAT III
Oscilloscope Coupling	DC Coupling
Recommended Input Impedance	1MΩ
Power Supply	DC12V / 1A

ZLCP Series High-Frequency AC/DC Current Probes

Advantages of ZLCP High-Frequency AC/DC Current Probes

Applications of ZLCP High-Frequency AC/DC Current Probes

Model Overview

ZLCP0330D

ZLCP0350D

ZLCP0370D

ZLCP0530D

ZLCP0550D

ZLCP1230D

Technical Specifications

Structure & Functions

5mm Sensor Jaw

LOCK / UNLOCK Control

Zero Auto Demagnetization & Adjustment

Range Switching

Overload Alarm

Standard BNC Output

Mechanical & Environmental Specifications

Product Datasheet Download