This accessory from Chauvin Arnoux consists of a set of two clamps in the form of crocodile clips, specifically developed for electrical measurements and testing in installations of safety categories CAT IV and CAT III. The clips are available in red and black and are designed for secure and stable connection to electrical conductors or terminals. They are designed for use in environments with high safety requirements, as commonly found in electrical installation technology.

Applications
The crocodile clips are intended for use in electrical installations of categories CAT IV and CAT III. These categories refer to the safety classification according to international standards for measuring instruments and accessories, with CAT IV representing the highest safety level for measurements at the energy supply level (e.g. meter connections, distribution boards). Therefore, the clips are suitable for testing at main distribution boards, meters, power supply lines, and other connection points in low-voltage networks.

Functions and Equipment in Detail
The set includes two individual crocodile clips, each featuring a stable, rigid jaw. The colour coding (red and black) allows for clear assignment to phase and neutral conductors, helping to avoid errors during measurements. The clips are rated for a maximum current of 20 A, making them suitable for use in typical low-voltage installations. The maximum voltage is 1000 V, with safety category CAT IV representing the highest requirement for insulation and protection against electrical overvoltage.

Technology Explained Simply
The crocodile clips are designed as pick-up clamps that are placed directly onto electrical conductors or terminal clamps to establish a secure contact for measuring instruments. The rigid jaw ensures a firm connection that remains intact even under slight vibrations or movements. Safety category CAT IV means that the accessory is approved for measurements at the energy supply level, i.e. at points directly connected to the power supply. The insulation of the clips is designed to meet the required electrical insulation values at 1000 V, protecting the user from dangerous contact or breakdown voltages.

Compatibility and Accessories
The accessory is specifically designed for measuring and testing instruments used in safety categories CAT IV and CAT III. It can be combined with multimeters, clamp meters, insulation testers, and other testing instruments that have corresponding connection sockets or cable connectors. The clips are not designed for a specific brand or model series, but comply with general standards for electrical measuring accessories.

Installation and Mounting
The crocodile clips are placed directly onto the conductors or connection points to be measured. The rigid jaw allows for easy and quick mounting, with the clips establishing a secure contact through their weight and shape. It is recommended to attach the clips to clean, exposed conductor cross-sections to ensure optimal electrical connection. The clips are used in conjunction with a measuring instrument equipped with appropriate connection cables or plug connectors.

Operational Advantages
The crocodile clips provide a reliable and safe connection for electrical measurements, especially in environments with high safety requirements. The colour coding simplifies assignment to phase and neutral conductors, reducing the error rate during measurements. The design for 20 A and 1000 V CAT IV enables use in a wide range of installation scenarios, from residential installations to industrial facilities. The robust construction ensures long service life and repeated use.

The accessory is supplied with a brief instruction manual explaining correct handling and safe use. The manual includes tips for avoiding errors and complying with safety regulations for electrical measurements.