GROUND fault circuit breaker, 4-pole, type A, short-term delayed, in: 25A, 30 mA, UN AC: 400 V of the FI switch is the residual current protection device for touch protection The patented residual current protection devices from Siemens are an important component of the SENTRON protective components for electrical installation, because they prevent life-threatening electric shocks by safely switching off dangerous fault currents against earth. Electrically ignited fires can be prevented even in the . Whether by direct contact with live parts during operation or by indirect contact with equipment, the protection is achieved primarily by rapid shutdown. The Siemens 5SV FI circuit breakers are characterized above all by: 1. Comprehensive protection for persons and property against electric shock. 2. Whether sinusoidal AC fault currents or smooth DC fault currents, Siemens offers the right type and special versions for all requirements. 3. Reliable safety during installation thanks to the standard included comprehensive and touch protection. 4. Tool-free release from the DIN rail or from the busbar network by means of convenient slide-manual operation. 5. Datamatrix code on the front of the device offers all information about the FI-circuit breaker quickly and easily. 6. Be protected according to standards: The residual current circuit breakers comply with the DIN VDE regulations. 7. Optimum technology for your safety - only from Siemens.This text is machine translated.