Earth fault breaker 5SV3 4-pole, with neutral to left

An earth fault breaker is used as a supplementary protection to prevent personal injury and fires caused by an electric overload through insulation errors, damage or unintentional contact. For personal protection, and earth fault breaker is used with 10 or 30 mA error current sensitivity and for fire protection, and earth fault breaker with max 300 mA error current sensitivity is used. Earth fault breaker type A can handle detecting both alternating current and pulsating direct current errors. Each earth fault breaker must have its own neutral base/neutral bar, and neutral must be separated from the protective conductor. Earth fault breaker is connected upstream of the group or electrical apparatus to be protected. The earth fault breaker’s must be checked frequently with the test button that is on every earth fault breaker. When the test button is pressed, a fault current is simulated and the earth fault breaker must trigger.