Extech MA445 400A True RMS AC/DC Clamp Meter, NCV, 40000 Count
- 400A True RMS Accuracy - Reliably measure AC and DC current up to 400 amps with True RMS precision, giving professionals dependable results even in noisy electrical environments.
- Non-Contact Voltage Detection - Quickly identify live wires with the built-in NCV detector, offering an added layer of safety when working in panels, outlets, or industrial systems.
- Backlit Dual Display - Large 40,000-count display with bright backlight shows both primary and secondary readings, making data easy to read even in dimly lit job sites.
- Versatile Test Functions - Includes inrush current capture, frequency, duty cycle, diode, and continuity testing, giving you a complete multimeter in a convenient clamp design.
- Durable & Professional Design - Compact body with 1.2-inch jaw opening accommodates thick conductors, while rugged construction ensures reliability in demanding field conditions.
| Included Components | test leads, 3 AAA batteries, Type K temperature probe and pouch |
| Manufacturer | Extech |
| Unit Count | 1 Count |
| Specification Met | Etl Certified |
| Brand | Extech |
| UPC | 793950374450 |
| Number of Items | 1 |
| Power Source | Battery Powered |
| Upper Temperature Rating | 1000 °C |
| Colour | Green |
| Style | MA445 |
| Global Trade Identification Number | 00793950374450 |
| Item Weight | 9.28 Ounces |
| Part Number | MA445 |
| Model | MA445 |
| Measurement Type | Capacitance |
| Style Name | MA445 |
| Item Dimensions | 3 x 1.6 x 9 inches |
| Item Highlight | Continuity, Frequency, NCV, True RMS, 400A AC/DC, inrush, duty cycle, diode, 40000-count dual, 1.2in jaw |
| Product Type | Clamp Meters |
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Category |
Test, Measure & Inspect , Electrical Testing , Current Testers , Clamp Meters |
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Estimated shipping
Select a product to estimate shipping.The Extech MA445 400A True RMS AC/DC Clamp Meter is built for electricians, HVAC technicians, and maintenance pros who need accurate, all-in-one measurement capability. With a 400A True RMS capacity, it delivers precision even in noisy electrical systems where average-sensing meters fall short. Equipped with a non-contact voltage detector, the MA445 makes it simple to spot live circuits safely. Its backlit dual 40,000-count display allows you to view multiple measurements at once—perfect for low-light job sites. Beyond current and voltage, this versatile clamp meter also offers inrush current capture, frequency, duty cycle, diode, and continuity tests, consolidating multiple tools into one rugged device. With a 1.2-inch jaw opening to accommodate large conductors and durable construction designed for demanding field work, the Extech MA445 is the go-to clamp meter for professionals seeking accuracy, versatility, and confidence on the job.
AC Current: 40.00A, 400.0A (10mA)
DC Current: 40.00A, 400.0A (10mA)
Current Accuracy: AC: ±2.5% DC: ±2.0%
Resistance: 400, 4k, 40k, 400k, 4M, 40M (0.1Ω)
Capacitance: 40nF, 400nF, 4μF, 40μF, 400μF, 4mF, 40mF (0.01nF)
Frequency: 10Hz to 1MHz (0.01Hz)
1.2" (30 mm) jaw size fits conductors up to 500MCM
About the Product
Compact and powerful, the Extech MA445 True RMS AC clamp Meter provides the versatility of multiple meters in one convenient device. The MA445 measures AC current, resistance, capacitance and frequency. It also features a True RMS function to ensure accurate measurements of non-sinusoidal waveforms without distortion from electronic devices. The MA445’s large, backlit LCD display allows for easy reading, while the ergonomically designed housing offers comfortable, one-handed operation. Additional features include a non-contact voltage detector, built-in flashlight, Data Hold, DC Zero, and Auto Power Off.
The MA445 digital clamp meter comes complete with test leads, AAA batteries (3), general-purpose Type K temperature probe, and a pouch.
Comprehensive Measurement Device
Professional Clamp Meter
The MA445 clamp on multimeter accurately features 11 basic and advanced functions and measurements allowing you to carry one meter into the field instead of several.
Easy and Safe to Operate
The MA445 digital clamp meter is lightweight and ergonomically designed for comfortable one-handed operation. The built-in flashlight illuminates your work area, allowing you to safely take measurements in poorly lit environments and the non-contact voltage detector reduces the risk of injury.
Accurate Readings
The MA445 clamp multimeter's True RMS feature uses a more advanced formula to compensate for the kind of electronic interference commonly caused by fluorescent lights, motor drives, computer power supplies, and other electronic systems, making it ideal for a variety of commercial or industrial applications.
Loaded with Additional Features
The MA445 True RMS clamp meter is packed with a number of different features that make taking measurements that much easier. Using Data Hold, your readings remain on screen until you’ve had a chance to record your findings. Likewise, the Max/Min feature retains the high and low values for you to record.
Product details
Shipping & Delivery
At GofinchKart Australia, we aim to deliver your order quickly and safely.
Domestic Shipping (Australia):
Orders are typically delivered within 3–7 business days.
International Shipping:
Estimated delivery time is 12–26 business days, depending on the destination and customs processing.
Once your order has been dispatched, you will receive a tracking number. Delivery times may vary during public holidays or due to unforeseen delays.