Residual current protection 2P 30mA 40A ELMARK

Residual current protection, operating without the need to supply additional voltage to the actuator.

The principle of operation consists in comparing the magnitude of the currents flowing through the neutral and phase conductors. If a fault occurs in the insulation of any of the conductors, the system becomes unbalanced and the magnetic fluxes cannot be destroyed. In this way, the magnetic flux generates a voltage in the secondary winding, which drives a current proportional to the leakage current through the electromagnet winding. When the value of this current exceeds the limit value of the residual current circuit breaker, the protection is activated and the residual current circuit breaker disconnects the power supply network. It is also used to regulate the proper functioning of electrical panels.

The circuit breaker is manually controlled and automatically disconnected. The connection is made via a power comb. Flexible or rigid conductors with the appropriate cross-section can be used. During installation, it is placed in a vertical position, attaching it to a DIN rail.

The residual current protection is two-pole, with a nominal current of 40 A, and the leakage current is 30 mA.