The Schneider Electric Masterpact MT is a premium Air Circuit Breaker (ACB) from the high-performance Masterpact range. The MT400/630 refers to a specific frame size designed to accommodate continuous current ratings from 400A to 630A.
Parameter Specification
Product Line / Range Masterpact MT
Frame Size MT 400/630
Rated Current (In) Range 400 A to 630 A (Continuously adjustable via electronic trip unit)
Rated Ultimate Breaking Capacity (Icu) Typically 65 kA at 415V AC (IEC 60947-2). Higher options available (e.g., 100kA).
Number of Poles 3-Pole or 4-Pole
Rated Operational Voltage (Ue) Up to 690V AC
Rated Insulation Voltage (Ui) 1000V
Trip Unit Type Micrologic Electronic Trip Units (e.g., 5.0A, 6.0A, 7.0). Standard for this frame.
Protection Functions • Overload (L) – Adjustable (Ir)
• Short-Circuit (S) – Adjustable (Isd, Ii)
• Ground Fault (G) – Adjustable (Ig)
• Measurement & Communication – Standard
Communication Integrated communication slots for multiple protocols (Ethernet, Modbus, Profibus, etc.).
Control Digital display, rotary handle, and standard/optional motorized charging mechanism.
Mounting Style Withdrawable (Draw-out) is standard and recommended.
Electrical Durability Up to 15,000 operations at In
Mechanical Durability Up to 30,000 operations
Standards & Compliance IEC 60947-1 & 60947-2, UL 1066, CE, CCC