Residual current circuit breaker 3P+N 25A/30mA Type A QuickConnect left N CDS425R

Residual Current Device (RCD) 3P+N 25A/30mA is an element protecting the electrical installation, safeguarding users from electric shock in case of insulation failure. This model, catalog number CDS425R, is designed for mounting on a DIN rail and provides effective protection for electrical circuits with a rated voltage of 400V.

Features and application

This four-pole (3P+N) RCD is characterized by a rated current of 25A and a differential current sensitivity of 30mA, classifying it as type A – ideal for protection against short circuits and leakage currents to ground. The QuickConnect construction with left N connection simplifies and speeds up installation, which is particularly important during installation work. This RCD finds application in home installations, commercial buildings, and industrial facilities where high safety is required.

Construction and parameters

The RCD is designed for reliability and durability. Its housing provides an IP20 degree of protection, meaning protection against touching with a finger and solid objects larger than 12.5 mm. The short-circuit strength of 6kA guarantees its proper operation even in the event of high overvoltages. The ability to connect single-wire conductors with a cross-section from 1 to 25 mm² and multi-wire conductors from 1 to 16 mm² ensures compatibility with various types of cabling. The width of the device, 4 modules, allows for efficient use of space in the switchgear cabinet.

Additional information regarding technical parameters: the rated insulation voltage Ui is 500V, the rated impulse withstand voltage Uimp is 4kV, and the ambient temperature during operation is in the range of -25°C to 40°C. The RCD has a pollution degree of 2 and is compatible with additional equipment, increasing its functionality. The surge current withstandability is 0.25kA.