DS201 UL 1P+N RCBO is a device that in two modules width is able to provide complete protection against overcurrent (overload and shortcircuit) and earth fault. DS201 UL are approved according to UL 1053 standard “Ground- Fault Sensing and Relaying Equipment” and UL 1077 "standard for Supplementary Protectors for Use in Electrical Equipment, making them suitable for installation in equipments/ machines addressed to North American market.