Kä cï kek ya looi në DER3B dossena Italy në relay de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël de gël:

Italy dossena yam looi B-type leakage protection relay, ye raan töŋ ye tɔ̈u yen tɔ̈u yen tɔ̈u yen tɔ̈u yen tɔ̈u yen tɔ̈u yen tɔ̈u yen tɔ̈u yen tɔ̈u yenIEC 60947-2:2006 annex M ed.4.Kɛnɛya ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye kɛ̈n ye.

B-type leakage protection relay dossena, Italy, lëu bï ya luui në DC wala AC wala AC mixed low voltage grid. A ka looi tënë frequency converters, UPS， Machine tools, photovoltaic, buildings, lifting, mines, medical and other equipment and many A-type leakage protection relays can't detect environments.

DOSSENA' s Earth leakage relay in class B is the only one that complies with the standard IEC 60947-2:2006 annex M ed.4.