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249.99 GBP
249.99 GBP
testo 770-2 - TRMS Clamp meter
The Testo 770-2 is a handheld multimeter with a CAT III 1000 V and CAT IV 600 V rating. It features a current clamp, measuring range of up to 4000 counts on the display, and is designed for professional use in various industries
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Testo 770-2 TRMS Clamp Meter
The Testo 770-2 is a high‑performance True RMS (TRMS) clamp meter designed for professional electrical measurements. It combines robust construction, advanced technology, and user‑friendly features to deliver accurate current readings in demanding environments.
Key Technical Specifications
- Current Measurement Range: Up to 400 A (both AC and DC)
- Display: 6000‑count LCD, providing fine resolution for precise readings
- Safety Classifications: CAT III 1000 V / CAT IV 600 V – suitable for a wide range of industrial and commercial applications
- Technology: True RMS (TRMS) measurement, ensuring accurate results even with non‑sinusoidal waveforms
- Power Supply: Three AAA (Micro) batteries – lightweight and easily replaceable
- Dimensions: Height 243 mm, Width 96 mm, Depth 43 mm
- Weight: 378 g – portable yet sturdy for field use
- Color Scheme: Orange and black – high visibility in work environments
Design & Build Quality
The Testo 770-2 features a rugged, ergonomic chassis that protects internal components from dust, moisture, and mechanical shock. Its compact form factor (43 mm depth) allows the meter to be clipped onto cables of various sizes without compromising stability or readability.
Advanced Measurement Capabilities
Unlike conventional clamp meters that rely on peak‑to‑peak or RMS approximations, the TRMS technology in the 770-2 calculates true root‑mean‑square values. This means:
- Accurate readings for distorted waveforms: Ideal for motors, transformers, and power supplies with harmonic content.
- Consistent performance across AC/DC: The meter seamlessly switches between alternating and direct current measurements without user intervention.
- High resolution: With a 6000‑count display, small changes in current are easily discernible, aiding troubleshooting and calibration tasks.
User Interface & Features
The LCD screen presents data clearly, with adjustable brightness for low‑light conditions. The meter includes:
- Auto‑range selection: Quickly adapts to the measured current level.
- Hold function: Locks the displayed value for detailed inspection.
- Backlit display: Ensures visibility in dark work sites.
- Battery status indicator: Alerts users when a replacement is needed, preventing unexpected downtime.
The Testo 770-2 is engineered for professionals who demand precision and reliability. Typical applications include:
- Electrical maintenance: Inspecting wiring, transformers, and motor circuits.
- Industrial automation: Monitoring current draw in PLCs, drives, and control panels.
- Power quality analysis: Measuring harmonic distortion and ensuring compliance with standards.
- Field service: Quick diagnostics on-site for HVAC, refrigeration, and lighting systems.
The combination of TRMS accuracy, robust safety ratings, and a user‑friendly design makes the Testo 770-2 an indispensable tool for engineers, technicians, and electricians. Its lightweight construction (378 g) and compact dimensions allow it to be carried effortlessly across job sites, while the durable build ensures longevity even in harsh environments.
- Replace AAA batteries promptly when the low‑battery indicator appears.
- Avoid exposing the meter to extreme temperatures or direct sunlight for prolonged periods.
- Clean the clamp jaws with a dry cloth; do not use solvents that could damage the internal electronics.
With its precise TRMS measurement, high safety classification, and ergonomic design, the Testo 770-2 remains a top choice for professionals seeking reliable current monitoring in any electrical setting.
| This product in Comparor | |
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Category
This product is cataloged in our store in these categories
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- Electric multimeters for car diagnostics |
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International
Find this product in one of our international stores
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 266.17 EUR  230.67 EUR  225.72 EUR  204.53 EUR |
| Colors
Predominant colors of the product |
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| Tags | Features like Inrush |
| Identifiers | |
| Brand | Testo |
| MPN | Testo 0590 7702 |
| ID | 18729189 |
| 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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