Eigenschaften
Clamp diameter Ø / sensor length	MA400D-170 : Ø 45 mm / 170 mm MA400D-250 : Ø 70 mm / 250 mm MA400D-1000 : Ø 318 mm / 1000 mm
Dimensions of housing	100 x 60 x 20 mm
Length of connected link cable	0,8 m

The Chauvin Arnoux DigiFLEX MA4000D-350 is a digital TRMS ammeter with a flexible current transformer, specifically designed for measuring alternating current in switch and distribution enclosures. The device features a compact housing and a flexible sensor with a diameter of 100 mm and a length of 350 mm, which can be easily looped around conductors. Measurement is performed in the range of 0.20 A to 4000 A AC, with display in three ranges: 4 Aac, 40 Aac, and 400 Aac. Resolution is 1 mA, 10 mA, and 100 mA, depending on the measurement range, enabling precise reading. Accuracy is ± (1.5% + 2 pts) in the higher ranges, sufficient for reliable measurement in industrial applications. The bandwidth of 10 Hz to 3 kHz allows capture of alternating currents at high frequencies, which is relevant for modern electrical systems.

Applications
This device is suitable for use in switch and distribution enclosures of installations up to 600 V CAT IV. The safety category IEC 61010 CAT IV 600 V ensures safe operation even in environments with high electrical loads. The battery-powered operation using two 1.5 V AAA batteries enables mobile and flexible use without external power supply. The operating temperature range of 0 °C to +50 °C makes the device suitable for indoor use and normal ambient conditions.

Functions and Equipment in Detail
The digital display with 4,000 points enables direct and precise display of the measured current. The HOLD function stores the current measurement value, allowing it to be read even after removing the sensor. The maximum value memory records the highest measured value during measurement, which is useful for monitoring load peaks. The exclusive sensor locking system ensures easy and safe handling. The magnetic Multifix mounting allows flexible attachment in the enclosure, while the included Velcro straps facilitate storage of the device.

Technology Explained Simply
TRMS (True Root Mean Square) means that the measured current value is correctly captured regardless of the waveform shape, which is particularly important for non-sinusoidal loads. The flexible measuring loop allows measurements even in tight or inaccessible areas of the switchgear without damaging wires or cables. Power supply via two AAA batteries ensures long operating life and independence from mains voltage. The connected cable length is 0.8 m, sufficient to position the device outside the enclosure.

Compatibility and Accessories
The device is compatible with the magnetic Multifix mounting system, enabling flexible installation in the enclosure. Additionally, opening clamps for MiniFLEX, Velcro straps, and a transport bag (120 x 200 x 60 mm) are available as suitable accessories, facilitating handling and storage.

Installation and Mounting
Installation is performed by looping the flexible measuring loop around the conductor to be measured. The locking system ensures secure latching. The magnetic holder allows firm attachment in the enclosure, keeping the device stably positioned during measurement. The Velcro straps are used for storage and transport.

Operational Advantages
The device is characterised by its compactness, mobility, and easy operation. Direct display of current and the HOLD and maximum value memory functions simplify field work. The high safety category and TRMS measurement ensure reliable results in demanding environments. The flexible measuring loop enables quick and safe measurement without mechanical stress on conductors.

Scope of Delivery
The device is delivered with the magnetic Multifix holder, a strap for storage, and a user manual. Batteries are not included in the scope of delivery.