General
Enclosure diameter	20 mm

The MN11 current transformer from Chauvin Arnoux is a compact measuring device for capturing alternating currents in the range of 0.5 A to 240 A. It belongs to the MN series and is specifically designed for use in industrial and commercial installations where precise current measurements are required at tight or hard-to-reach locations. The device features an ergonomic design that enables safe and comfortable handling, even in limited space. The clamping diameter is 20 mm, making it suitable for thin cables and conductors installed in switchgear or at device connections.

Applications
The MN11 is primarily used in electrical engineering and machine building, where accurate measurement of small to medium alternating currents is essential. It is approved for use in electrical installations up to safety category CAT III 600 V and CAT IV 300 V, qualifying it for professional use in industrial and commercial facilities. Measurement is performed contactlessly by clamping the device around the cable to be measured, thereby avoiding any disturbance to the installation.

Functions and Equipment in Detail
The current transformer operates on the principle of a current transformer and delivers a proportional alternating current signal at the output. The turns ratio is 1000/1, meaning that an input current of 240 A generates an output signal of 0.24 A. This signal is transmitted via a permanently attached cable with a 4-mm-insulated plug, ensuring a secure and reliable connection. The output is equipped with an integrated overvoltage protection that safeguards connected measuring instruments from transient voltage spikes.

Technology Explained Simply
The accuracy of the MN11 is ≤ 2 %, which is sufficient for professional applications. Measurement is inductive: when current flows through a cable, it generates a magnetic field, which the clamp transformer detects and converts into a measurable signal. The compact design and small clamping diameter allow measurements in tight spaces where other measuring devices cannot fit. The safety standard IEC 61010 ensures that the device can be operated safely under the specified voltage categories.

Compatibility and Accessories
The MN11 is designed for use with multimeters or power analyzers equipped with a 4-mm connection. The connection is made via the permanently mounted cable, preventing loose connections or cable breaks.

Mounting and Installation
Installation is performed by simply clamping the device around the cable to be measured. No additional mounting or fastening is required. Handling is straightforward: the device is placed around the cable, and the output signal is read on a suitable measuring instrument. The instruction manual, included in the delivery, provides guidance on correct application.

Operational Advantages
The MN11 offers a combination of compact design, high accuracy, and safety. The integrated overvoltage protection safeguards sensitive measuring instruments. The secure connection via the cable with 4-mm plug ensures stable signal transmission. The device is suitable for professional use in electrical installations and machine building, where reliability and safety are paramount.

Delivery Contents
The delivery includes the MN11 current transformer and the instruction manual.