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 MA400D is a digital TRMS ammeter with a flexible current transformer, specifically designed for measuring alternating current in enclosures and distribution cabinets. The device features a compact housing and a flexible sensor with a diameter of 45 mm and a length of 170 mm, which can be easily wrapped around conductors or cables. Measurement range is from 0.020 A to 399.9 A AC, displayed in three ranges: 0.020 A to 3.999 A, 4.00 A to 39.99 A, and 40.0 A to 399.9 A. Resolution is 1 mA, 10 mA, and 100 mA depending on the range, enabling precise readings. Accuracy is ± (2% + 10 pts) in the lower range and ± (1.5% + 2 pts) in the higher ranges. The bandwidth of 10 Hz to 3 kHz allows measurement even with rapid signal changes. Power supply is via two 1.5 V AAA batteries, making the device independent of mains power and suitable for mobile use. Operating temperature is between 0 °C and +50 °C. The device is safety-tested according to IEC 61010 CAT IV 600 V, making it suitable for use in distribution boards and enclosures up to 600 V. The housing dimensions are 100 x 60 x 20 mm and weighs approximately 130 g. The connected connection cable has a length of 0.8 m.

Applications

The DigiFLEX MA400D is designed for measuring AC current in industrial and commercial installations, particularly in enclosures and distribution cabinets. It is suitable for maintenance, commissioning, and diagnostics in electrical engineering. The combination of compact design and flexible measuring loop enables easy and quick installation without disconnecting wires. The safety category CAT IV 600 V ensures safe use in environments with high electrical risk.

Functions and Equipment in Detail

The device features a digital display with 4,000 points, directly showing the measured current value. The HOLD function allows fixing the current reading, useful for difficult access or documentation. Maximum value memory stores the highest measured value, helpful for monitoring load peaks. The exclusive closing system of the measuring loop simplifies handling and ensures secure positioning of the sensor. The magnetic Multifix mounting allows flexible attachment to metallic surfaces inside the cabinet, keeping the device securely positioned during measurement.

Technology Explained Simply

TRMS (True Root Mean Square) means the measured current value is captured independently of the waveform of the alternating voltage, which is especially important for non-sinusoidal loads such as frequency converters or electronic consumers. The 4,000-point display ensures high resolution and precise values. The bandwidth of 3 kHz enables capturing even fast alternating processes. The safety category CAT IV 600 V is the highest for measuring instruments in distribution networks and means the device is suitable for use near power sources such as distribution boards or main lines.

Compatibility and Accessories

The device is compatible with the magnetic Multifix mounting system, allowing flexible installation on metallic surfaces inside the cabinet. Available accessories include opening clamps for MiniFLEX, hook-and-loop straps, and a transport bag, facilitating handling and storage.

Installation and Mounting

Installation is performed by wrapping the flexible measuring loop around the cable or conductor to be measured. The closing system ensures secure fixation. The magnetic Multifix holder is attached at a suitable location inside the cabinet, keeping the device securely positioned during measurement. The cable connection to the housing is made via the 0.8 m long connection cable.

Operational Advantages

The DigiFLEX MA400D stands out for its mobility, compactness, and easy operation. The direct display of current, HOLD function, and maximum value memory simplify field work. The safety approval CAT IV 600 V makes it a reliable tool for professional electricians. The use of AAA batteries ensures simple and cost-effective power supply.

Scope of Delivery

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