IEK VA47-100, Operation Manual, Page: 8 / 15

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MODULAR CIRCUIT BREAKERS (MCB)
FOR OVER-CURRENT PROTECTION VA47-100
Operation Manual
MVA40.001
1 Purpose and Application
1.1 Modular circuit breakers for overcurrent protection VA47-100 from IEK
brand (hereinafter referred to as “circuit breakers”) are intended for application in
single or three-phase AC electric networks with rated line-to-line voltage limited
to 400V and 50Hz frequency. These circuit breakers meet the requirements of EN
60898-1 and EU Directives 2006/95/EC and 2004/108/EC.
1.2 Circuit breakers exercise a function of automated cutting the electric
equipment off at overcurrents (overload or short circuit) and day-to-day manage-
ment of electric network arms.
1.3 Main application: electrical distribution panels, accounting and distribut-
ing boards or residential, public and industrial buildings as well as individual elec-
tric power consumers.
2 Designation structure:
1 – modular circuit breaker;
2 – series;
3 – modification;
4 – protection degree type (C,D);
5 – rated current;
6 – type according to pole number (1в4)*
* Used only at circuit breaker ordering.