Electrical accessories. Circuit breakers for overcurrent protection for household & similar installations. Circuit-breakers for a.c. operation Circuit-breakers, Overcurrent circuit-breakers, Overcurrent protection, Electrical protection equipment, Domestic electrical installations, Electrical equipment, Household equipment, Miniature circuit-breakers, Switchgear, Rated current, Grades (quality), Circuits, Test equipment, Power losses, Sampling methods, Rated voltage, Ratings, Testing conditions, Electrical testing, Electrical measurement, Mechanical testing, Short-circuit current tests, Marking