Residual current circuit breaker with overcurrent protection 4P 6kA C 40A/30mA Type A ADM490C

Safety and reliability in your electrical installation

The Hager ADM490C residual current circuit breaker with overcurrent protection is a comprehensive solution providing protection against the effects of short circuits, overloads, and electric shock. The device combines the functions of an overcurrent circuit breaker (characteristic C) and a residual current circuit breaker type A, making it an ideal choice for both installers and end-users looking for versatile protection.

Functionality and parameters

The ADM490C circuit breaker is designed to operate in AC installations with a rated voltage of 400V and a rated current of 40A. Characteristic C provides delayed tripping during short-term overloads, which is particularly important when connecting receivers with high inrush current, such as motors or transformers. The rated residual current of 30mA guarantees a quick response in the event of a ground fault, minimizing the risk of electric shock.

The short-circuit breaking capacity at 6kA ensures effective protection of the installation in the event of a short circuit, and the energy limitation class 3 confirms its ability to minimize the effects of dynamic overvoltages. The device has 4 protected poles and occupies 4 modules on a TH35 rail, making it easy to install.

Installation and application

The ADM490C circuit breaker is designed for flush mounting, providing an aesthetic look of the installation. The ability to connect solid conductors with a cross-section of 1-25 mm² and stranded conductors with a cross-section of 1-16 mm² provides great flexibility during installation. The mechanical lock prevents accidental disconnection of the circuit breaker on the supply side during maintenance or service work.

The device is used to protect electrical circuits in residential, commercial, and industrial buildings. It is particularly recommended for protecting lighting circuits, sockets in wet rooms (e.g., bathrooms, kitchens), and electrical appliances exposed to moisture. The degree of protection IP2X protects against touching conductive parts under voltage and against the ingress of solid objects larger than 12.5 mm.