Fluke i410 vs i1010: Which Current Clamp Fits Your Multimeter?

Choose the Fluke i410 to reuse a compatible multimeter for current within 400 A AC/DC; choose the i1010 when you need 600 A AC or 1000 A DC, according to Fluke's instruction sheet. Both send 1 mV/A to the DMM's voltage input; with a Fluke 117, deriving 1% of its 600.0 mV range gives a 6 mV, or 6 A, AC input threshold. If you also need to buy a DMM, compare an integrated clamp multimeter before committing to a separate probe and display.

• 1 mV/ABoth accessories send voltage to the DMM
• 400 Ai410 maximum for AC and DC
• 6 ADerived AC input threshold when paired with a Fluke 117

Quick picks: which setup should you buy?

Compare specifications and all conditions

Existing suitable DMM; current stays within 400 A

Our choice

i410

Buying condition

Accept its accuracy and check the DMM's low end

DC above 400 A through 1000 A, or AC above 400 A through 600 A

Our choice

i1010

Buying condition

Match the output voltage range, not the DMM's direct-current jack rating

A wider jaw

Our choice

Neither wins on the documented specification

Buying condition

The sheet gives 30 mm for one conductor and 2 × 25 mm for two

Small parasitic drain or leakage

Our choice

Choose a purpose-specific instrument

Buying condition

Neither clamp's small-current accuracy makes it our default here

No DMM already, or preference for one instrument

Our choice

Compare integrated clamps

Buying condition

Start with clamp meter vs multimeter

Full comparison table ↔

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Your requirement	Our choice	Buying condition
Existing suitable DMM; current stays within 400 A	i410	Accept its accuracy and check the DMM's low end
DC above 400 A through 1000 A, or AC above 400 A through 600 A	i1010	Match the output voltage range, not the DMM's direct-current jack rating
A wider jaw	Neither wins on the documented specification	The sheet gives 30 mm for one conductor and 2 × 25 mm for two
Small parasitic drain or leakage	Choose a purpose-specific instrument	Neither clamp's small-current accuracy makes it our default here
No DMM already, or preference for one instrument	Compare integrated clamps	Start with clamp meter vs multimeter

Your requirement	Our choice	Buying condition
Existing suitable DMM; current stays within 400 A	i410	Accept its accuracy and check the DMM's low end
DC above 400 A through 1000 A, or AC above 400 A through 600 A	i1010	Match the output voltage range, not the DMM's direct-current jack rating
A wider jaw	Neither wins on the documented specification	The sheet gives 30 mm for one conductor and 2 × 25 mm for two
Small parasitic drain or leakage	Choose a purpose-specific instrument	Neither clamp's small-current accuracy makes it our default here
No DMM already, or preference for one instrument	Compare integrated clamps	Start with clamp meter vs multimeter

i410 vs i1010: the comparison that matters

Sources: shared instruction sheet, i410 specifications and i1010 specifications. These are manufacturer specifications, not readings from thisMETER.

Best when 400 A covers the job: Fluke i410

The i410 is our starting accessory when you already own a suitable DMM and its current ceiling covers your work. Fluke identifies the standalone US model as i410, part 617727. Its Hall-effect design measures AC and DC; the meter reads the clamp's voltage output rather than carrying the measured current through its own current input. Fluke's accessory explanation distinguishes this from AC-only current-output clamps.

The trade-off is its looser percentage accuracy relative to i1010. Do not choose it for fine drain measurements simply because Fluke's product page lists a lowest measurable current below its specified range; the accuracy floor still applies.

Jaw conflict: the i410 page's headline says 32 mm, while its specification table and the shared instruction sheet say 30 mm for one conductor. Treat clearance near that boundary as unresolved and obtain confirmation for your exact cable; we would not buy it assuming the headline wins.

Check the standalone i410 at Fluke.

Best for higher current: Fluke i1010

Choose the i1010, part 617735, for its higher current ceilings or tighter percentage accuracy. Its headline maximum applies to DC: 1000 A DC does not mean 1000 A AC. The instruction sheet caps AC at 600 A rms. Fluke's US i1010 page confirms the separate ranges.

It does not buy a larger documented jaw: both models share the instruction sheet's conductor dimensions. Nor does its wider bandwidth guarantee its headline accuracy at every frequency. If your reason for upgrading is conductor clearance or a particular waveform, resolve that requirement separately from the maximum-current number.

Check the i1010 at Fluke.

Match the output to your DMM before ordering

The instruction sheet requires a voltmeter accepting safety-shrouded banana plugs, able to display 1 mV, preferably 0.1 mV, with accuracy ≥0.75%, a load impedance of 1 MΩ, ≤100 pF. For AC current, select mV AC or V AC; for DC current, select mV DC. Check the chosen voltage function's accuracy as well as its resolution, and use the matching mode.

At 1 mV/A, a hypothetical 20 A gives 20 mV. A display step of 0.1 mV corresponds to 0.1 A; it does not establish that accuracy. The i1010's 1000 A DC ceiling corresponds to 1000 mV, exceeding a 600 mV range. These conversions follow the documented output scale.

Fluke specifies the DMM's voltage and COM inputs for these accessories: connect the black output lead to COM and the red output lead to V. For the most accurate DC readings, zero the display with the jaws closed before clamping one conductor. Its similarly named i400 instead produces an AC current output and needs the appropriate milliamp input. A shared brand, banana connection or clamp shape is insufficient compatibility evidence. Source: Fluke's connection guide.

• Yes: Voltage-output clamp plus matching AC/DC voltage function is the required pairing
• No: A current-input jack alone does not establish compatibility with i410 or i1010
• Partly: Another DMM needs its connector, impedance, range and accuracy checked individually

Compatible DMM example to reuse: Fluke 117

The existing Fluke 117 record is a useful host example, not a requirement to buy another meter. Its manual explicitly permits mV/A current probes. A shared input-characteristics table for models 110, 114, 115 and 117 lists nominal voltage-input impedances above 5 MΩ AC and 10 MΩ DC, each below 100 pF; this article infers that those documented inputs fit the clamp load requirement. Fluke also confirms i1010/117 compatibility in the i1010 page's manufacturer Q&A, while the instruction sheet says minimum AC current is limited to the low end of the specified mV AC range.

The 6 A AC threshold is this article's calculation from the manual's 1% of range specified-input note on 600.0 mV, not a Fluke statement in amps. Thus the clamp's 1 A specified lower end does not make a 117 combination specified down to that current. Also note that the 117's AC millivolt function is DC-coupled. Its AC accuracy table covers 45–500 Hz and 500 Hz–1 kHz; intersect the meter's conditions with the clamp's conditions rather than adopting whichever specification looks broader. 117 accuracy tables and notes.

Check the useful low end and the combined accuracy

Fluke separates specified ranges starting at 1 A from usable ranges of 0.5 A to 400 A (i410) and 0.5 A to 1000 A DC (i1010); with a true-rms voltmeter, minimum AC current is limited to the low end of the specified mV AC range. Both clamps retain a 0.5 A fixed accuracy term, so neither is our default for small parasitic drain or leakage. More display digits cannot remove clamp error. For DC, the published accuracy requires zero adjustment and a centered conductor; follow the manual's procedure.

For an illustrative 20 A DC signal, the 117's 20 mV reading has a meter allowance of ±(0.5% of reading + 2 counts), with 0.1 mV per count. Add that contribution, converted to amps, to the clamp's ±(3.5% + 0.5 A) or ±(2.0% + 0.5 A). A first-order worst-case sum is approximately ±1.5 A with i410, or ±1.2 A with i1010. This is calculated from the clamp specifications and 117 DC millivolt table, before additional environmental allowances, not a calibration result.

Frequency, voltage and environment still apply

The current instruction sheet gives the quoted AC accuracy over 45–400 Hz, with crest factor ≤3. Its separate 3 kHz/10 kHz bandwidth figures are not the same promise. The linked older service document additionally lists an i1010 sine-wave accuracy band above that interval; the current instruction sheet omits it. Confirm the applicable specification with Fluke before buying for higher-frequency accuracy.

Both clamps have a current × frequency limit of 240,000 A·Hz, so maximum current and maximum bandwidth cannot be assumed simultaneously. Their operating temperature is −10 to 50°C, storage temperature is −20 to 60°C, permitted humidity falls from 0–90% to 0–45% as temperature rises, and the operating altitude is 2000 m. The instructions prohibit damp or wet use. Check those limits for the actual location. Instruction-sheet limits.

Buying guide: variants and the complete order

The kit's own contents list names the same i410 1-400A AC rms, 1-400A DC clamp and case, not a DMM or a higher range. Both standalone product pages list 1.6 m output cables with shrouded banana plugs, so the documented 117 pairing needs no connector adapter. We recommend no unverified adapter for a different host. Both clamps specify a 9 V alkaline battery and 60 hr typical continuous life; remove the battery during non-use over 60 days or storage above 50°C. Inventory the clamp and meter batteries separately, and confirm what ships.

1. 1

   Match the measurement

   Check AC versus DC, useful current range, waveform and conductor clearance.

2. 2

   Match the host

   Read the DMM's voltage-input, impedance, resolution and accuracy tables.

3. 3

   Match the package

   Confirm standalone versus case kit, batteries and an approved connection for the exact host.

Only one conductor carrying the target current should pass through the jaw: Fluke explains that enclosing line and neutral together cancels the reading. Do not alter a mains cord to gain access. Use the maker's procedure and suitable equipment for the job. Replacement leads and accessories are covered separately in best multimeter test leads.

How we choose

We compared Fluke's US product pages, instruction sheet, service specifications and the 117 manual, checked November 3, 2026. Recommendations follow documented range, compatibility, accuracy, safety limits and package contents; we have not physically tested these accessories. Conflicting maker claims remain identified. See how we choose for our research method.

Verdict

Get i410 when your existing DMM and required current range fit. Pay for i1010 when its higher ceiling or tighter percentage accuracy solves a defined need. Check the DMM's low end before either purchase; if you are starting from scratch, compare our integrated clamp-meter picks first.