Read the current without breaking the circuit
Eight clamp meters across four sensor types, from a 23 mm mini that fits between crowded conductors to a flexible Rogowski coil that wraps a busbar. AC and AC/DC current to 6000 A, true RMS where the waveform is not a sine, and a three-phase power meter for load surveys, with inrush capture on the two newest. Filter by sensor, what you need to measure and maximum current.
Filter by what matters to you
Select any combination of criteria. Choosing more than one option within a row widens the search rather than narrowing it.
| Model | Family | Sensor | Measures | Maximum | Counts | Notable | Link to product page |
|---|---|---|---|---|---|---|---|
| GPS-230 | Mini | Round Ø23 mm | AC | 400 A | 2000 | 1 mA resolution · max hold | View product |
| GPS-232 | Mini | Round Ø23 mm | AC and DC | 400 A | 4000 | Zero · capacitance · 150 kHz | View product |
| GPS-212 | Large jaw | 52 mm | AC | 1000 A | 4000 | NCV · 10 MHz frequency counter | View product |
| GPS-275 | Large jaw | 52 mm | AC and DC | 1000 A | 4000 | True RMS · temperature · peak hold · bargraph | View product |
| GPS-276 | Large jaw | 52 mm | AC and DC | 1000 A | 3999 | True RMS · inrush · temperature · 40 MHz frequency | View product |
| GPS-278 | Large jaw | 55 mm | AC and DC | 2000 A | 1999 | 2000 V · inrush · true RMS on voltage, averaging on current | View product |
| GPS-210 | AutoCheck | 45 mm | AC | 2000 A | 6000 | True RMS · AutoCheck · Ghost Voltage Buster · NCV | View product |
| GPS-290PR | Flexible coil | Rogowski coil, φ200 mm | Three-phase power | 6000 A | — | kW, kVA, kvar, kWh, PF · phase sequence · USB | View product |
Four ways to get round the conductor
A rigid jaw for most work, a small one for tight spaces, a large one for distribution cable, and a flexible coil where nothing rigid will fit.
GPS-230 / GPS-232
Mini Clamp Meters
A 23 mm jaw small enough to get between conductors in a crowded consumer unit, where a full-size clamp will not fit. The GPS-232 adds DC current, capacitance and frequency.
GPS-212 / GPS-275
Large Jaw Clamp Meters
A 52 mm jaw for the cable sizes on distribution boards and switchgear, with a full multimeter behind it. The GPS-275 adds true RMS, DC current, temperature and peak hold.
GPS-276 / GPS-278
AC/DC Clamp Meters with Inrush
Two clamp meters for two jobs, both capturing starting current as an 80 ms RMS window. The GPS-276 is the general purpose instrument: 1000 A, true RMS on current and voltage, temperature and frequency. The GPS-278 reaches 2000 A and 2000 V and keeps the meter behind it simpler.
GPS-210
AutoCheck Clamp Meter
Put the probes on anything and it works out whether it is DC volts, AC volts or resistance. Low impedance drains ghost voltage, so a dead conductor reads dead.
GPS-290PR
Three-Phase Power Clamp Meter
A Rogowski coil instead of a jaw, so it wraps round a busbar or cable bundle. Reads three-phase power, power factor, energy and phase sequence.
Four things worth settling first
Start with the conductor, not the current
The jaw has to go round the cable before anything else matters. A 23 mm mini fits between crowded conductors, 52 mm takes distribution cable, and a flexible coil wraps a busbar or a bundle no rigid jaw can reach.
Do you need DC?
A plain CT clamp reads AC only. DC current needs a Hall sensor, which on this range means the GPS-232, GPS-275, GPS-276 or GPS-278. All four zero the display before a DC reading, which matters at the bottom of the range.
True RMS, and when it matters
On drives, switch-mode supplies and dimmers the waveform is not a sine, and an averaging meter reads low. The GPS-275, GPS-276 and GPS-210 are true RMS on current; the GPS-278 is true RMS on voltage but averaging on current, and the others are averaging and perfectly adequate on clean mains.
Current, or power?
The first seven measure current. The GPS-290PR measures three-phase power: kW, kVA, power factor, energy and phase sequence, which is what a load survey or energy audit actually needs.