Type: MCCB (Moulded Case Circuit Breaker)

Rated current (In): 400A

Rated operational voltage (Ue): 690V AC

Rated insulation voltage (Ui): 750V

Interrupting capacity: Varies with voltage (e.g., 200–240V → 85kA, 400/415V → 50kA, 500V → 32kA, 690V → 33kA)

Compliance: IEC 60947-2

🔹 Purpose:
MCCBs like this one provide protection against overcurrent (overload and short-circuit) in electrical distribution systems. They are widely used in industrial and commercial installations where high current capacity is needed.

A residual current device (RCD) at the bottom (AEG DB3/M96, ID-300), which protects against earth leakage.

Additional modular protection devices in the middle (likely miniature circuit breakers or protective relays).

This combination ensures layered protection:

MCCB (top) → Main incoming breaker, handles high fault currents.

MCBs/RCD (middle/bottom) → Branch protection and leakage protection for final circuits.

Used.Tested