Anh
blocking relay
restraining relay
Đức
Sperrelais
Sperrglied
Pháp
relais de blocage
relais de verrouillage
relais de blocage,relais de verrouillage /ENG-ELECTRICAL/
[DE] Sperrelais; Sperrglied
[EN] blocking relay; restraining relay
[FR] relais de blocage; relais de verrouillage