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MD63F800

The Siemens MD63F800 is a high-performance Molded Case Circuit Breaker (MCCB) from the 3VA series, designed for reliable overcurrent and short-circuit protection in low-voltage (LV) electrical systems. It features a robust construction with a rated current of 800A, making it suitable for industrial, commercial, and infrastructure applications.

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Key Features:
Current Rating (In): 800A

Breaking Capacity (Icu/Ics):

Icu (Ultimate Breaking Capacity): Typically up to 100 kA (dependent on voltage, verify datasheet).

Ics (Service Breaking Capacity): Usually 75% of Icu.

Voltage Rating (Ue):

Operational Voltage: Up to 690V AC (50/60Hz).

Rated Insulation Voltage (Ui): 1000V.

Poles: 3P (3-pole) or 4P (4-pole) options.

Trip Unit:

Thermal-Magnetic (Fixed): Overload and short-circuit protection.

Electronic (Adjustable): Optional for precise settings (e.g., 3VA ETU).

Standards Compliance:

IEC 60947-2, UL 489, CE, CCC.

Mounting: Fixed or withdrawable (depending on assembly).

Accessories:

Auxiliary contacts, shunt trips, undervoltage releases, communication modules.