INPUT · L1 L2 L3 N PE
A0
Source feed
Source feed
CEE INLET 125 A
5P · 6h · Red · 400 V · IP67
3P + N + PE
400 V
400 V
Pre-breaker
isolation
isolation
A1
SWITCH-DISCONNECTOR
4P · 160 A · AC-23A · lockable
OPTIONAL
manual
off-locker
off-locker
Main
protection
protection
A2
MAIN MCCB
4P · In = 125 A · Icu ≥ 25 kA
overcurrent
short-circuit
short-circuit
Surge
protection
protection
MCB
SPD BACKUP · 4P
per SPD datasheet
A3
SPD · TYPE 1+2
3P+N · Iimp ≥ 12.5 kA · Up ≤ 1.5 kV
to PE bar
parallel branch
parallel branch
AUX
AUX MCB
B-curve · 6 A · 4P
A4
DIGITAL MULTIMETER
V1·V2·V3 · I1·I2·I3 · Hz · kW
A6
RCM · MONITOR
supply via aux MCB · CT on main bus
Phase
presence
presence
A5
PHASE INDICATOR
3 × LED · L1 / L2 / L3 · own fuse
independent
diagnostic
diagnostic
A6 measures here
CT around L1+L2+L3+N
CT around L1+L2+L3+N
A6 · CT RING
L1+L2+L3+N pass through ring
PE excluded from CT loop
rail not interrupted · monitor only
L1+L2+L3+N pass through ring
PE excluded from CT loop
rail not interrupted · monitor only
NORMAL PATH
A7
RCCB · TYPE A · S
4P · 125–160 A · IΔn = 300 mA
A8
U-RELAY + CONTACTOR
U-min/max · N-loss · 4P 160 A · DC coil
BYPASS PATH · LOCKED
A9
MANUAL BYPASS
4P · 160 A · AC-23A · lockable
DISTRIBUTION BUS · 4 BRANCHES
A10
MCB · C32 · 4P
A11 · CEE 32A · 1
A10
MCB · C32 · 4P
A11 · CEE 32A · 2
A10
MCB · C32 · 4P
A11 · CEE 32A · 3
A10
MCB · C32 · 4P
A11 · CEE 32A · 4
PE BAR · PROTECTIVE EARTH
A0 · INLET PE
ENCLOSURE
A3 · SPD PE
A11 · OUTPUTS PE
PE NEVER SWITCHED · NEVER BYPASSED · NOT THROUGH RCM CT RING
Live rail · protection
Surge / Voltage
Bypass path
Metering / Monitor
Indication
PE
CEE Connector
Optional