Residual current circuit breaker 3P+N 125A 300mA 10kA Type A S CPA690

Safety and reliability in your electrical installation

Residual Current Device (RCD) 3P+N with a rated current of 125A is a key element ensuring the protection of people and equipment against electric shock and the effects of short circuits and overloads. This model, with a sensitivity of 300mA and a breaking capacity of 10kA, is perfect for both domestic and industrial installations. The 3P+N construction (three phase poles and neutral) guarantees comprehensive protection of the entire circuit.

Functionality and installation

Mounting on a DIN rail facilitates quick and easy installation in a distribution board. Compact dimensions (width 4 modules, depth 70mm) allow for efficient use of space. The RCD is characterized by high resistance to surge currents (5kA) and selective operation, which means that in the event of a failure, it will only disconnect the damaged part of the installation, minimizing downtime. The mechanical lock prevents accidental switching on of the RCD after it has been switched off due to a fault.

Technical specifications and application

This RCD is designed to operate in AC networks with a rated voltage of 415V and an insulation voltage of 500V. It is adapted to cooperate with wires with a cross-section of 1 to 50 mm² (solid) and 1 to 35 mm² (stranded). Thanks to the protection class IP20, it is resistant to touch and dirt, and the operating temperature range from -25°C to 40°C allows it to be used in various environmental conditions. Equipped with a short-circuit release, it provides a quick response in case of overloads. The rated impulse withstand voltage Uimp is 4kV, which further increases the safety of use. The possibility of additional equipment allows you to adapt the functionality of the RCD to the specific needs of the installation.