194.99 GBP
testo 770-1 - TRMS Clamp meter
The Testo 770-1 is a versatile TRMS clamp meter designed for measuring AC current and voltage. With its cable-grab clamp design, this handheld multimeter provides accurate measurements in the range of CAT III 1000 V and CAT IV 600 V
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Testo 770-1 TRMS Clamp Meter
The Testo 770-1 is a high‑performance True RMS clamp meter designed for professional electrical measurements. Its compact, ergonomic design and robust construction make it ideal for field technicians, electricians, and engineers who demand accuracy and reliability in demanding environments.
Key Features
- TRMS Technology: Delivers precise root‑mean‑square (RMS) readings on both AC and DC currents, ensuring accurate measurements even with non‑sinusoidal waveforms.
- Current Range: Measures up to 400 A, covering a wide spectrum of industrial and commercial applications.
- Dual Voltage Rating: Rated for CAT III 1000 V and CAT IV 600 V, providing safety in both low‑ and high‑voltage environments.
- LCD Display: A bright, backlit LCD with a resolution of 6000 counts offers clear visibility under various lighting conditions.
- Compact Dimensions: Measures 243 mm in height, 96 mm in width, and 43 mm in depth, making it lightweight (378 g) yet sturdy.
- Power Supply: Operates on 3× AAA (Micro) batteries, ensuring long field usage without the need for external power sources.
- Durable Build: Constructed with high‑quality materials to withstand harsh working conditions and frequent handling.
Design & Ergonomics
The Testo 770-1 features an intuitive layout that prioritizes user comfort. The orange/black color scheme not only provides a modern aesthetic but also enhances visibility of the instrument’s controls in low‑light settings. The device’s slim profile allows it to fit comfortably in hand, while the robust clip mechanism ensures secure attachment to conductors of varying sizes.
Measurement Capabilities
With its True RMS capability, the meter accurately captures both sinusoidal and distorted waveforms. This is critical for applications involving power electronics, variable frequency drives, or any system where current may deviate from a pure sine wave.
- AC Current: Measures up to 400 A AC with high precision.
- DC Current: Also supports up to 400 A DC, making it versatile for battery systems and DC power supplies.
- Voltage Compatibility: While primarily a current clamp, its CAT III/IV ratings allow safe operation near high‑voltage lines.
Display & Readability
The backlit LCD provides a clear readout of up to 6000 counts, ensuring that even subtle changes in current are visible. The display is designed for quick interpretation, with large numerals and minimal glare.
Safety & Compliance
Compliance with CAT III 1000 V and CAT IV 600 V standards guarantees that the meter can be safely used in environments ranging from residential to industrial. This dual rating protects users against accidental exposure to high voltages while maintaining measurement accuracy.
Applications
The Testo 770-1 is suited for a broad range of tasks, including:
- Electrical troubleshooting and diagnostics in industrial plants.
- Inspection of motor drives, transformers, and power distribution systems.
- Verification of current draw in renewable energy installations such as solar inverters.
- Field testing for HVAC equipment and large appliance servicing.
- Educational labs where accurate RMS measurement is required.
Portability & Power
The meter’s lightweight construction (378 g) combined with a battery life that supports extended fieldwork makes it an excellent choice for mobile technicians. The use of standard AAA (Micro) batteries simplifies replacement and ensures uninterrupted operation.
Conclusion
The Testo 770-1 TRMS Clamp Meter stands out as a reliable, accurate, and user‑friendly instrument for professionals who need to measure current across a wide range of applications. Its combination of True RMS technology, robust safety ratings, and ergonomic design makes it an indispensable tool in any electrical measurement toolkit.
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Category
This product is cataloged in our store in these categories
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- Ampere Meters |
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International
Find this product in one of our international stores
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 170.96 EUR  291.58 EUR  138.76 EUR  144.60 EUR |
| Colors
Predominant colors of the product |
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| Tags | Testo 770-1 TRMS Clamp meter |
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| Identifiers | |
| Brand | Testo |
| MPN | Testo testo 770-1 |
| ID | 18729183 |
| Dimensions / Weight | |
| Key Features | |
| Assembly | Digital |
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Colours A colour is a visual attribute that describes the hue or shade of an object or surface. It can be a single dominant colour, a combination of colours, or a range such as "Black, White". The value may be expressed in common names (e.g., Black, Silver) or descriptive terms (e.g., One Colour, Assorted).
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Orange/black |
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Depth The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.
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43 mm |
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Design The visual style or aesthetic category of a product, such as "Digital signage flat panel", "Modern", "Retro", or "Sporty". It describes the overall look and feel that distinguishes the item from others in its class.
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Up to 400 A |
| Display | 6000 counts |
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Display type The type of visual panel or display technology used in a product, such as LCD, LED, OLED, TFT, IPS, AMOLED, or analog. It indicates the underlying technology that determines image quality, color reproduction, power consumption and suitability for different use cases.
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LCD |
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Height The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.
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243 mm |
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Packaging The form of packaging used for a product, such as box, blister pack, bag, pallet, or other standard formats that protect and contain the item during shipping and storage.
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Individual packaging |
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Safety A list of safety and regulatory certifications that a product complies with, such as CE, UL, FCC, or other regional standards.
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CAT III 1000 V/ CAT IV 600 V |
| Specification | TRMS |
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Technology The chemical composition of a battery that determines its performance, energy density, and suitability for different applications. Common chemistries include Lithium‑Ion, Nickel‑Metal Hydride, Alkaline, Lead‑Acid, and others.
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AC/DC |
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Type The general category or style of the product, such as laptop, printer cartridge, or cooling fan. It helps buyers quickly identify the nature of the item and compare similar products.
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Clip-on ammeter |
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Type of battery The chemical composition, physical size, and typical arrangement of the battery used in a product. It includes common formats such as AAA, AA, CR2032, 18650, or combinations like "2x AAA (Micro)" that indicate both type and count.
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3x AAA (Micro) |
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Weight The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.
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378 g |
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Width The horizontal measurement of a product, expressed in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.
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96 mm |
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