AC-only and AC/DC clamps use different physics inside the jaw · review
An 800 A AC and DC clamp with true-RMS and 6000 counts, positioned by its maker for solar and balcony photovoltaic work — which is where the DC capability earns its keep.
What the figures leave us with The DC range is the reason to buy it, and the missing jaw dimension is the reason to measure your cable first.
A clamp bought for the current type, not the current value.
Measurement of currents up to 800 A on both AC and DC, plus voltage. True RMS, stated as delivering correct values on distorted current waveforms of the kind common in photovoltaic installations, with 6000 counts. A five-in-one function set combining multimeter capabilities. Positioned by the maker for maintaining PV systems, monitoring balcony solar output and fault-finding in DC circuits.
A transformer clamp induces a current in its core from the changing field around a conductor. Direct current has no changing field, so the clamp reads nothing — not an error, not a warning, just zero. Reading DC needs a Hall-effect sensor, which costs more and is the entire reason to choose a clamp like this one.
Jaw opening in millimeters decides whether the clamp goes round the cable in front of you. On a domestic circuit it always will; on a battery main or a PV combiner it may not. No figure appears in this listing.
Read on the day this page was built: $34 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 31 August 2026. The live price is at the top of the page.
| Amazon reference | B075Z1GH5L (identical on 6 markets) |
|---|---|
| EAN | 0757347418813 |
| Current measurement | 800 A AC and DC |
| True-RMS | True RMS |
| Display count | 6000 counts |
| Functions | 5-in-1 |
At $34, it is the 1 cheapest of the 3 models in this category published here.
A photovoltaic array and a battery bank carry direct current. An AC-only clamp works by transformer action, which needs a changing field, and reads zero on DC. Proster states 800 A on both AC and DC.
The listing does not state one. It is the specification that determines whether the clamp physically fits round the cable you have, and its absence is a genuine gap.
None is stated. For work on a live PV installation, the category and the isolation specifications matter more than usual — read the manual and follow the rules that apply where you are.
7.5/ 10
The DC range is the reason to buy it, and the missing jaw dimension is the reason to measure your cable first.
A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom, United States. Listed is not the same as in stock — availability changes daily.
Details checked on August 31, 2026.
Solar and battery work, where the current is direct and an AC-only clamp reads nothing at all.
Amazon reports what buyers took in the month before this page was last checked: at least 50.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for measuring instruments and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
400 A True RMS · inrush · low-pass filter ~160 Hz
A trade mini-clamp reading load currents to 400 A with true-RMS, an inrush function and a low-pass filter at around 160 Hz for suppressing the switching noise of motor drives.
Best for: Motor and lighting installations where the drive noise is the reason previous readings made no sense.
1000 A AC/DC · 750 V AC / 1000 V DC · inrush · VFD and LoZ modes
The highest current range here at 1000 A AC and DC, with an inrush mode for motor starting currents and VFD and low-impedance modes for drives and ghost voltages.
Best for: Motor and drive work, where inrush and VFD filtering are the two modes that make the reading meaningful.
≈ $80
1 mA resolution · True RMS · color LCD · 19.2 × 4.5 × 3.0 cm (7.6 × 1.8 × 1.2 in)
A pocket clamp with 1 mA resolution for finding leakage and parasitic drain, an automatic multimeter mode, and a color screen — in a body under twenty centimeters long.
Best for: Chasing a parasitic drain on a vehicle, or a leakage current that a normal clamp reads as zero.
≈ $50
