Detailed electrical distribution panel layout and connection diagram for a store installation. This QDTE panel features a 125A main circuit breaker (C120N model) with 220V single-phase 60Hz input from QGBT via 1#95mm² conductors with PE50mm² grounding. The panel includes surge protection (SPW-02, 275V, 45kA) and residual current protection (125A-30mA).
The physical arrangement shows:
– Steel enclosure with IP-54 rating in RAL 7032 gray
– Main circuit breakers QD1, QD2, QD3 (125A)
– 26 branch circuit breakers (10A) for lighting circuits E1-E22
– Dedicated neutral (N1, N2, N3) and grounding (PE) bars
– Copper bus bars: phase bars 1/8″ x 1/2″, neutral bar 1/4″ x 3/4″, ground bar 1/8″ x 3/4″
– Plastic wire ducts (80x50mm/50x50mm)
– Door with rubber seal and slotted latch
The panel distributes power to store lighting circuits with proper phase balancing and features both incoming and outgoing 380/220V 3-phase connections.
