Fluke I400s: Top-notch Specifications, Comprehensive Comparisons, And Trusted Buying Sources
Fluke i400s Information
the information about the Fluke i400s AC current clamp:
Introduction
The Fluke i400s is a compact, high-performance AC current clamp that is ideal for measuring up to 400 amps of current in live circuits. It is the only current clamp available with a CAT IV 600 V / CAT III 1000 V safety rating, making it safe to use in high-voltage environments. The i400s also features a soft, non-slip overmold handle for comfort and control, and an optional BNC/Banana adapter for connecting to digital multimeters.
Specifications
- Measuring range: 40 A to 400 A
- Accuracy: ±1.5% (20 A to 400 A)
- Resolution: 10 mA (40 A range), 100 mA (400 A range)
- Response time: 300 milliseconds
- CAT IV 600 V / CAT III 1000 V safety rating
- Soft, non-slip overmold handle
- Optional BNC/Banana adapter
- Maximum conductor diameter: 32 mm
Features
- Measure AC current up to 400 amps
- CAT IV 600 V / CAT III 1000 V safety rating
- Soft, non-slip overmold handle
- Optional BNC/Banana adapter
- Compact and lightweight design
- Easy to use
- Accurate measurements
What's in the box
- Fluke i400s AC current clamp
- Instruction manual
- Optional BNC/Banana adapter
The Fluke i400s is a versatile and reliable current clamp that is perfect for a wide range of applications, including:
- Electrical troubleshooting
- Power quality testing
- Motor maintenance
- Solar panel installation
- HVAC diagnostics
- And more
If you are looking for a high-performance, safe, and easy-to-use current clamp, the Fluke i400s is a great option.
Fluke i400s Compare with Similar Item
a table comparing the Fluke i400s with similar items:
| Feature | Fluke i400s | Klein Tools DT4200 | Greenlee 38800 |
|---|---|---|---|
| Maximum current measurement | 400 amps | 400 amps | 400 amps |
| Accuracy | ±1.5% | ±2% | ±2% |
| Power source | Hand-powered | Hand-powered | Hand-powered |
| Dimensions | 12.83 x 6.97 x 2.17 inches | 12.3 x 6.2 x 2.2 inches | 11.8 x 6.7 x 2.3 inches |
| Weight | 480 grams | 475 grams | 480 grams |
| Price | $299.99 | $259.99 | $249.99 |
As you can see, the Fluke i400s is very similar to the Klein Tools DT4200 and the Greenlee 38800. All three clamps have a maximum current measurement of 400 amps, an accuracy of ±1.5% to ±2%, and a hand-powered operation. The Fluke i400s is slightly larger and heavier than the Klein Tools DT4200, but it is also slightly more expensive. The Greenlee 38800 is the smallest and lightest of the three clamps, but it is also the least expensive.
Ultimately, the best clamp for you will depend on your individual needs and budget. If you are looking for a high-accuracy clamp with a large measurement range, the Fluke i400s is a good option. If you are looking for a more affordable clamp, the Klein Tools DT4200 or the Greenlee 38800 are also good choices.
Fluke i400s Pros/Cons and My Thought
The Fluke i400s is a high-quality current clamp that is designed for use by electricians and other professionals who need to measure AC current without breaking the circuit. It has a maximum measuring range of 400 amps and a CAT IV 600 V / CAT III 1000 V safety rating, making it safe to use on high-voltage circuits.
Pros:
- Accurate measurements: The i400s is known for its accurate current measurements, even at high currents.
- Safe to use: The i400s has a CAT IV 600 V / CAT III 1000 V safety rating, making it safe to use on high-voltage circuits.
- Easy to use: The i400s is easy to use, even for beginners. It has a simple interface and provides clear readings.
- Durable construction: The i400s is made from durable materials and is built to withstand the rigors of everyday use.
- Compact and lightweight: The i400s is compact and lightweight, making it easy to carry and use in tight spaces.
Cons:
- Expensive: The i400s is more expensive than some other current clamps on the market.
- Not suitable for DC current: The i400s can only measure AC current.
- Not suitable for low currents: The i400s has a minimum measuring range of 10 amps, so it is not suitable for measuring low currents.
User reviews:
- Positive reviews: Overall, user reviews of the Fluke i400s are positive. Many users praise its accuracy, safety, and ease of use.
- Negative reviews: Some users have complained about the i400s's price and its inability to measure DC current.
My thoughts:
Overall, I think the Fluke i400s is a great current clamp. It is accurate, safe, and easy to use. However, it is also expensive and cannot measure DC current. If you are looking for a high-quality current clamp that can measure AC current at high voltages, then the i400s is a great option. However, if you need a current clamp that can measure DC current or if you are on a budget, then you may want to consider other options.
Here are some other current clamps that you may want to consider:
- Klein Tools DT420A Digital Clamp Meter: This is a less expensive option that offers similar features to the i400s. It has a maximum measuring range of 400 amps and a CAT IV 600 V safety rating.
- Amprobe MC400 AC Current Clamp: This is another affordable option that is known for its accuracy. It has a maximum measuring range of 400 amps and a CAT III 1000 V safety rating.
- Fluke 375 FC True-RMS Current Clamp: This is a more expensive option that offers a wider range of features than the i400s. It can measure AC and DC current, as well as voltage, resistance, and continuity. It also has a CAT IV 600 V / CAT III 1000 V safety rating.
Fluke i400s Where To Buy
You can buy Fluke i400s and spare parts from the following retailers:
- Fluke Direct: This is the official website of Fluke, the manufacturer of the i400s. You can buy the i400s multimeter and spare parts here at a discounted price. You can also find a wide range of other Fluke products on the website.

- Walmart: Walmart is a large retailer that sells a variety of products, including the Fluke i400s multimeter. You can find the multimeter in the electrical section of most Walmart stores.

- Amazon: Amazon is another large retailer that sells the Fluke i400s multimeter. You can find the multimeter on Amazon at a competitive price. You can also read reviews of the multimeter from other Amazon customers before you buy it.

- Best Buy: Best Buy is a retailer that sells electronics and appliances. You can find the Fluke i400s multimeter in most Best Buy stores.

- Lowes: Lowes is a home improvement retailer that sells a variety of tools and equipment. You can find the Fluke i400s multimeter in most Lowes stores.

- eBay: eBay is an online auction site where you can find a variety of products, including the Fluke i400s multimeter. You can often find the multimeter on eBay at a discounted price. However, it is important to be careful when buying from eBay sellers, as there have been cases of counterfeit products being sold on the site.

I hope this helps!
Fluke i400s Problems and Solutions
some common issues and solutions for the Fluke i400s multimeter, as reported by experts:
- The multimeter is not turning on.
- Make sure that the multimeter is plugged in and that the batteries are installed correctly.
- If the multimeter is still not turning on, try resetting it by pressing and holding the power button for 10 seconds.
- The multimeter is not displaying any readings.
- Make sure that the multimeter is set to the correct measurement mode.
- If the multimeter is still not displaying any readings, try cleaning the probes with a damp cloth.
- The multimeter is giving inaccurate readings.
- Make sure that the probes are properly connected to the multimeter.
- If the multimeter is still giving inaccurate readings, try calibrating it.
- The multimeter is dropping its readings.
- Make sure that the multimeter is not in contact with any high-voltage sources.
- If the multimeter is still dropping its readings, try replacing the batteries.
Here are some additional tips for troubleshooting common Fluke i400s problems:
- If you are experiencing a problem that is not listed above, consult the Fluke i400s user manual for more information.
- If you are still unable to resolve the problem, contact Fluke customer support for assistance.
Here are the steps on how to reset the Fluke i400s multimeter:
- Turn off the multimeter.
- Press and hold the power button for 10 seconds.
- Release the power button.
- The multimeter will now be reset.
Here are the steps on how to calibrate the Fluke i400s multimeter:
- Turn on the multimeter.
- Select the "Calibration" menu.
- Follow the on-screen instructions to calibrate the multimeter.
- Once the calibration is complete, the multimeter will be ready to use.
I hope this helps!
Fluke i400s Manual
Fluke i400s AC Current Clamp Manual
Safety Information
- Before using the Fluke i400s AC current clamp, read and understand all safety instructions in this manual.
- The Fluke i400s is rated CAT IV 600 V / CAT III 1000 V. This means that it can be used safely in circuits with up to 600 Vrms line-to-line (or 1000 Vrms line-to-ground) as long as the circuit is properly grounded.
- Do not use the Fluke i400s if it is damaged or malfunctioning.
- Do not open the Fluke i400s. There are no user-serviceable parts inside.
- Keep the Fluke i400s away from children and unauthorized personnel.
- Use the Fluke i400s only for its intended purpose.
Before Use
- Before using the Fluke i400s, make sure that the circuit is turned off and discharged.
- Make sure that the Fluke i400s is compatible with the instrument you are using.
- Connect the Fluke i400s to the instrument using the BNC cable.
- Set the range of the Fluke i400s to match the expected current.
- Open the jaws of the Fluke i400s and clamp them around the conductor you want to measure.
- Read the current measurement on the instrument.
Troubleshooting
- If the Fluke i400s is not working properly, check the following:
- Make sure that the circuit is turned on and that the Fluke i400s is connected to the instrument.
- Make sure that the range of the Fluke i400s is set correctly.
- Make sure that the jaws of the Fluke i400s are properly clamped around the conductor.
- If the Fluke i400s is still not working properly, contact Fluke Customer Service for assistance.
Maintenance
- Keep the Fluke i400s clean and dry.
- Do not use harsh chemicals or cleaners to clean the Fluke i400s.
- If the Fluke i400s gets wet, dry it off immediately.
- Do not store the Fluke i400s in extreme temperatures or humid conditions.
Warranty
- The Fluke i400s is warranted to be free from defects in materials and workmanship for a period of two years from the date of purchase.
- If the Fluke i400s becomes defective during the warranty period, Fluke will repair or replace it, free of charge.
Contact Information
- Fluke Customer Service
- Phone: 1-800-443-5853
- Email: [email protected]
- Website: https://www.fluke.com/
Additional Information
- The Fluke i400s can measure AC currents up to 400 A.
- The Fluke i400s has a typical accuracy of 2% + 0.015 A (45-400 Hz).
- The Fluke i400s has a maximum non-destructive current of 1000 A.
- The Fluke i400s has a working voltage of 1000 Vrms.
- The Fluke i400s has a storage temperature range of -20°C to 60°C.
- The Fluke i400s has an operating temperature range of 0°C to 50°C.
- The Fluke i400s has a relative humidity range of 95% at 30°C and 75% at 40°C.
- The Fluke i400s has a dimensions of 150 x 70 x 30 mm and a weight of 114 g.
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