Meter boars for block of flats are designed for distribute and account three-phase current of frequency 50 Hz and voltage 0.4 kV earthed neutral systems electro supply for electric installation security during overloads and short-circuits, broadcasting, telephone and television networks equipment placing
SHHE order designation example:
SHHE – 2 3 1 1 NF4 SS U 31.2-35036863-005:2009.
Boxes SHHK with residual current circuit breaker are designed for receive, distribute and account three-phase current of frequency 50 Hz and voltage 220V earthed neutral electro supply systems for electric installation security during overloads and short-circuits
SHHK order designation example:
SHHK – 2 А NF4 SS U 31.2-35036863-005:2009