CIRCUTOR MK-363-B Series - Manual (Page 8)

-- MKB-363-M ELECTRONIC METERS -- M-981198 -- Page Nº 8
Mounting:
Instrument is to be mounted onto a DIN rail. All connections
keep inside the cabinet.
Note that with the instrument powered on, the terminals
could be dangerous to touching and cover opening actions
or elements removal may allow accessing dangerous parts.
Therefore, the instrument must not be used until this is
completely installed.
The circuit must be provided with an automatic switch to
disconnect it from the power supply network and an earth
leakage switch to guarantee its proper operation. The active
phases L1 and L3 will be both connected through a wire with a
minimum cross-section of 50 mm
2
, while the reference phase
L2 needs a minimum cross-section of 1 mm
2
.