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- $950.00
- Free 30-day Returns
Volume Discounts Available
- $854.05 ea.
- $845.06 ea.
- $836.07 ea.
Ships from China.
Sold by GUANGZHOU PINTECH CO LTD
Shipped by GUANGZHOU PINTECH CO LTD
Meet Your Seller
PINTECH AC/DC Current Probe Oscilloscope Probe 1400A, 150kHz, 1mV/10mA, Current Clamp Meter with BNC Connector, PT740-3A
- High accuracy oscilloscope current probe can measure 600A, maximum voltage 600V rms. Bandwidths up to 150KHz. The AC/DC Current Clamp are two current ranges available.
- Peak Range: 0.2A to 140A, 140A to 1400A.
- DC Current Range: 0.4A to 140A, 140A to 1400A.
- Widely Used: The current probe features BNC interface, compatible with all oscilloscopes. The PT740-3A current clamp is also suitable for power measurements, measure RMS values in the presence of DC interference.
- Package Included: PT740-3A AC/DC Current Clamp x 1, Adapter x 1, Manual x 1. NOTE: Default delivery to adapter-powered current probe, If you want battery-powered current probe, please contact us! BUT BATTERY NOT INCLUDED.
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Overview
Specs
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MODEL: PT740-3A
Bandwidth (-3dB): DC-150kHz
Current Range:
Peak:0.2A~140A, 140A~1400A
DC:0.4A~140A, 140A~1400A
Out Signal Ratio: 10mV/A(100:1), 1mV/A(1000:1)
Out Signal Inaccuracy(typical):±1.5%+5mV
Noise:1mV rms
Rise/Fall Time:2.3s
The load impedence:1M and 100pF
Insert Impedance: 0.39m at 50Hz, 58m at 1000Hz
Working Voltage: Max 600V rms
Common-mode voltage: Max 600V rmsv Influence of Adjacent Conductors: <10mA/A at 50Hz
Influence of Jaw Conductor Position: 0.5% of reading
Battery Capacity Indicator: When >6.5V,the green LED illuminates
Overload Indicator: Red LED is on
Automatic Shutdown Time: 10 minutes
DC Zero Adjustment: Supprot
Jaw Size(insert conductor): 1 cable: 30mm diameter; 2 cables: 24mm diameter or 2×31.5×10mm busbar
Output: Cable length 2M/78.7in, BNC connector
Weight: 440g/0.97lb
Size: 224 x 97 x 44 mm
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 30 days
- This item is covered by GUANGZHOU PINTECH CO LTD Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory
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The PINTECH PT740-3A is an AC/DC oscilloscope current probe for measuring current waveforms up to 1400A with 150kHz bandwidth, making it suitable for engineers, technicians, and lab users working on power electronics, motor drives, and high-current electrical testing.
Recommended For
- Engineers and lab technicians who need to view AC and DC current waveforms directly on an oscilloscope without breaking the circuit, especially in power electronics, inverter, motor-drive, or mains-side test setups up to very high current levels.
- Users troubleshooting switching power supplies, chargers, PFC stages, or industrial power circuits where non-contact current capture is more practical than inserting a shunt resistor into the current path.
- Teams measuring RMS current in the presence of DC offset or mixed AC/DC behavior, where a Hall-effect style oscilloscope current clamp is preferred over AC-only current sensing methods.
- Bench users with compatible oscilloscopes who need a BNC-output current probe for occasional high-current waveform analysis rather than a standalone clamp meter for everyday electrical service work.
Real-World Use Scenarios
- Checking startup or inrush current on a motor, power tool, or large power supply with an oscilloscope. The user is trying to see the turn-on waveform instead of a single RMS number, and should be able to capture the current spike shape and decay without cutting the circuit or inserting a shunt.
- Observing PWM and phase current on inverter, VFD, or motor-drive wiring during development or troubleshooting. The user is trying to confirm switching behavior, ripple, or load balance, and the likely experience is that the probe is useful for visualizing current waveforms on DC bus or output conductors at oscilloscope speed rather than relying on slower power-meter updates.
- Measuring mixed AC and DC current in power electronics, such as battery-fed converters, chargers, or DC supplies with ripple. The user is trying to see both the DC level and the superimposed waveform, and should expect a more complete picture than a clamp meter that only reports averaged or RMS values.
- Troubleshooting intermittent overcurrent events on industrial or lab equipment where breaking the circuit is inconvenient or unsafe. The user is trying to clamp around a single conductor and watch transient behavior live on a scope, and the likely outcome is faster isolation of spikes, pulses, or abnormal current bursts than with inline meters.
- Using a general-purpose oscilloscope with a BNC-input current clamp for bench diagnostics across different brands of scopes. The user is trying to add current waveform visibility to an existing oscilloscope setup, and should expect basic compatibility and manual scaling rather than the auto-detection features common on proprietary probe systems.
- For hobbyist or repair use, checking mains, appliance, or bench-supply current waveforms when a shunt resistor would disturb the circuit. The user is trying to get a practical view of distortion or pulsed load current, and community discussions suggest this style of probe is most helpful when non-contact waveform capture matters more than precision at very low current.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | electrical testing and measuring applications |
| Model Identifiers | PINTECH PT740-3A |
| Physical Specifications | 224 x 97 x 44 mm overall dimensions |
| Accuracy And Certifications | Specified accuracy ±1.5% + 5 mV; CE certified |
| Packaging And Unit | Sold individually (each) |
Reference Q&A
Q: Should I choose the PINTECH PT740-3A or a 100A class current probe like the Tektronix A622 or Micsig CP2100A?
A: Choose the PINTECH PT740-3A when your priority is measuring much higher current levels on an oscilloscope, especially in power, inverter, motor-drive, or mains-side troubleshooting where current can exceed 100A. Official specs position the PT740-3A as a 1400A, 150kHz probe with two current ranges, while the Tektronix A622 is a 100A, 100kHz probe and the Micsig CP2100A is a 100A, 800kHz probe. In practice, that means the PT740-3A fits high-current work better, while 100A-class probes are the better fit for lower-current measurements that benefit from higher sensitivity or higher bandwidth.
Q: Is the PT740-3A a better choice than a budget clamp probe like the Hantek CC-65?
A: The PT740-3A is the better choice when you need substantially more current range and more oscilloscope-oriented headroom. Officially, the PT740-3A reaches 1400A with 150kHz bandwidth, while the Hantek CC-65 is rated for 65A with 20kHz bandwidth. That makes the Hantek-style probe more appropriate for lighter-duty current viewing and basic waveform checks, while the PT740-3A is the stronger fit for higher-current systems and for capturing faster current behavior beyond low-frequency power measurements.
Q: Should I buy the PT740-3A or step up to a higher-bandwidth current probe?
A: Buy the PT740-3A if your main need is high-current oscilloscope measurement and your signals are within the kind of low- to mid-frequency range covered by a 150kHz probe. Step up to a higher-bandwidth probe if you are debugging fast switching edges, detailed SMPS waveforms, or higher-frequency transient behavior where bandwidth above 150kHz matters more than maximum current capacity. For example, Micsig positions the CP2100A at 800kHz and the CP2100B at 2.5MHz, but those models are limited to much lower current ranges than the PT740-3A.
Q: For bench debugging, should I pick a lower-current probe or the PT740-3A?
A: Pick a lower-current probe if most of your work is bench electronics, low-current circuits, or power-supply debugging below 100A, because those probes usually offer more sensitivity and often more bandwidth in that range. Pick the PT740-3A when your measurements regularly move into high-current equipment where 100A-class probes would run out of range. The trade-off is straightforward: lower-current probes are usually optimized for finer low-current detail, while the PT740-3A is optimized for broader current headroom.
Q: Is the PT740-3A a good fit if I need to measure both DC and AC current waveforms on a standard oscilloscope?
A: Yes, it is suitable if your main need is non-intrusive AC/DC current measurement on a regular oscilloscope with a BNC input. The PT740-3A supports both AC and DC current measurement, uses a standard BNC connection, and is rated up to 150 kHz, which makes it more appropriate for power electronics, inverter, motor drive, and general electrical waveform work than for very high-frequency switching analysis.
Q: Who is the PT740-3A most suitable for?
A: It is best suited for technicians, power electronics engineers, service teams, and advanced lab users who need to observe current on an oscilloscope without breaking the circuit. Its high current range and BNC scope connection make it more appropriate for bench diagnostics, industrial electrical work, and power measurement than for casual hobby use or low-current precision electronics.
Q: What are the main trade-offs versus a lower-cost current clamp or a multimeter clamp?
A: The main advantage of the PT740-3A is that it is designed for oscilloscope waveform viewing with DC capability and a wider measurement role than a basic clamp meter. The trade-off is that it is a specialized bench tool: it is larger, more expensive, and less portable than a simple clamp meter, and its 150 kHz bandwidth is still far below the bandwidth of premium high-frequency current probes used for fast switching design work.
Q: Is the PT740-3A better than a lower-range 150 kHz probe like the UNI-T UT-P42?
A: It is better if your priority is much higher current capacity. The PT740-3A is intended for up to 1400 A, while the UT-P42 is a 150 kHz AC/DC probe with a much lower 200 A class range. The trade-off is that lower-range probes are often a better fit when you need more sensitivity on smaller currents, while the PT740-3A is the more practical choice for heavier current applications.
Q: Can I use the PT740-3A with any oscilloscope, or are there compatibility limits?
A: It should work with oscilloscopes that accept a standard BNC-connected probe input, which is a practical buying point for users who ask about cross-brand compatibility. However, compatibility does not mean automatic scaling or powered smart-probe support. You may still need to set the correct volts-per-amp relationship manually and confirm how the probe is powered, especially because this listing notes an adapter-powered default version and mentions a battery-powered version separately.
Q: Is the PT740-3A a good fit for checking current waveforms in power electronics or SMPS work?
A: Yes, if your work stays within moderate-frequency power electronics measurements. The PT740-3A is an AC/DC clamp probe with 150 kHz bandwidth, so it is better suited to viewing lower-frequency current behavior, RMS-with-DC situations, and general power measurements than to analyzing fast switching edges. It makes more sense for bench troubleshooting of converters, motors, and power stages than for high-speed waveform detail.
Q: What is the main trade-off of buying the PT740-3A instead of a higher-bandwidth current probe?
A: The main trade-off is bandwidth versus range and cost. The PT740-3A offers very high current capability up to 1400 A peak, but its 150 kHz bandwidth is much lower than the hundreds-of-kHz to multi-MHz probes often discussed for switch-mode power supply analysis. That means it is more suitable when current range and basic waveform visibility matter more than capturing fast edges or high-frequency detail.
Q: Who is the PT740-3A most suitable for?
A: It is most suitable for users who need an oscilloscope-compatible clamp probe for high-current AC/DC measurements, especially in power testing, industrial troubleshooting, inverter or motor-related work, and general bench diagnostics. It is less suitable for users who mainly need low-current sensitivity or high-frequency switching analysis, because the product is optimized more for current range than for bandwidth.
Q: Is the PT740-3A worth buying if I just need a general-purpose current clamp for occasional scope use?
A: Only if your measurements actually require an oscilloscope current probe and high current range. For occasional or basic electrical checks, community discussions often treat dedicated scope current probes as a specialized purchase. The PT740-3A is more justifiable when you need non-intrusive AC/DC current waveforms on a scope, not when a standard clamp meter or simpler setup would already answer the question.