Siemens Fire protection switch block 140A 230V for LS and FI/LSSwitch 12TE

The arc fault circuit interrupter (AFCI) is the protective device for detecting arc faults. Siemens' proven arc fault circuit interrupter, an important component of the SENTRON protection systems for electrical installations, provides safety against dangerous arc faults. No other protective device, whether a circuit breaker, residual current device, or fuse system, can detect this danger as reliably. Arc faults can occur due to loose connections or insulation failures and often lead to hazardous fires. The arc fault circuit interrupter detects disturbances early and safely disconnects the circuit before a fire can start. The Siemens arc fault circuit interrupter is distinguished by: 1. Reliable and comprehensive protection for people, equipment, and assets. 2. Technical excellence in fire protection by covering the previous protection gap. 3. Easy installation in conjunction with circuit breakers and residual current devices. 4. Proven North American technology.