This Vigi NG125 is a modular add-on residual current devices. It has 4P and rated current is 125A. The earth leakage protection class is A type with a sensitivity of 300mA and a voltage independent technology. This product protects against short circuit, cable overload, electrical shock by indirect contact and fire hazards. This device is combined with a NG125 circuit breaker to provide the earth leakage protection and circuit protection. This product is compliant with IEC 60947-2 standard. The Ue rated operational voltage is from 230VAC to 415VAC. The Ui rated insulation voltage is 690VAC. The Uimp rated impulse withstand voltage is 8kV. The pollution degree is 3. It can be mounted on 35 mm symmetrical DIN rail. The width in 9mm pitches is 11. The dimensions are (W) 207mm x (H) 118mm x (D) 81mm. The weight is 0.8kg. The degree of protection is IP20 and IP40 in an enclosure.