Differential switch - 4P - 63A - 30mA - B-EV TYPE 400V

Acti9 Type B Differential Switch - Schneider

Differential switches are our best defense against electrical hazards. These devices protect users from electrocution and property damage.
Unsurprisingly, the International Electrical Commission (IEC) makes the use of Type B differential switches mandatory in some applications and strongly recommends them for other applications.
With our smart and reliable Type B differential switches, Schneider Electric will help you meet the latest CIS standards.

Differential switches are designed and certified to protect against fibrillation, electric shock and electrocution (for example, if a person comes directly into contact with a wire).
Today, the new electrical installations are equipped with additional equipment, such as inverters for photovoltaic installations, speed dimmers in HVAC systems, pumps and inverters. These non-linear charges produce complex leaks in CC and in frequencies that cannot be detected by standard Type AC or Type A differential switches.

Type B differential switches are the optimal solution for these complex loads, detecting current leaks to the CA and PURE cc high-frequency land in addition to normal CA current leaks. Thanks to their high immunity to untimely triggering, these differential switches are the ideal choice for protection and continuity of service.

Characteristics