Residual current circuit breaker 1P+N 40A 30mA 6kA A HI CDH240J

Residual Current Circuit Breakers – Protection and Safety in Your Installation

This 1P+N residual current circuit breaker, with a rated current of 40A and a sensitivity of 30mA, is a key element ensuring safety in every electrical installation. The device effectively protects against electric shock, as well as against the effects of overloads and short circuits. Its compact size (2 modules) makes it easy to install in a distribution board.

This circuit breaker is designed to protect people and equipment in electrical circuits. Thanks to its high short-circuit breaking capacity (6kA), it ensures reliable operation even in the event of serious disturbances. Type A application guarantees detection of both sinusoidal leakage currents and those containing a DC component, increasing the scope of protection.

Construction and Installation

Installation is carried out on a standard DIN rail, making it easy to integrate with existing electrical infrastructure. Screw terminals provide secure and durable connections for wires with a cross-section from 1 mm² to 25 mm² (solid) or from 1 mm² to 16 mm² (stranded). The installation depth is 70 mm, which allows for optimal use of space in the distribution board.

Application and Benefits

• Personal protection: Provides effective protection against electric shock thanks to 30mA sensitivity.
• Fire protection: Minimizes the risk of fire caused by short circuit or overload.
• Wide application: Ideal for protecting lighting circuits, socket outlets and electrical appliances in residential and commercial buildings.
• High reliability: Short-circuit breaking capacity at 6kA guarantees stable operation in emergency situations.
• Easy installation: DIN rail mounting and screw terminals facilitate installation and maintenance.
• Versatility: Type A provides protection for both AC and DC currents, increasing the range of applications.

Additionally, the circuit breaker is characterized by an impulse withstand voltage of up to 3kA and has an IP20 degree of protection, which ensures its durability and reliability in various environmental conditions. Operation in an ambient temperature from -25°C to 40°C allows it to be used in a wide range of climates. The rated impulse withstand voltage Uimp is 4kV, which further increases the safety of use.