The Schneider Electric NSC is a high-performance, compact Air Circuit Breaker (ACB) from the Masterpact series. The model NSC630K refers to the 630A frame size with a K-type breaking capacity and a 3-pole configuration.
Parameter Specification
Product Line / Range Masterpact NW / NSC (New Small Compact)
Frame Size NSC630
Number of Poles 3-Pole (3P)
Breaking Capacity Category K
Rated Ultimate Breaking Capacity (Icu) 80 kA at 415V AC (IEC 60947-2)
Other capacities: L (65kA), N (100kA).
Rated Service Breaking Capacity (Ics) 100% of Icu (80 kA) for category A.
Rated Operational Current (In) 630 A (Adjustable via the electronic trip unit, e.g., range from 250A to 630A).
Rated Operational Voltage (Ue) Up to 690V AC
Rated Insulation Voltage (Ui) 1000V
Trip Unit Type Electronic MicroLogic Trip Unit (e.g., MicroLogic 5.0A, 6.0A, 7.0). Provides adjustable protection for overload (L), short-circuit (S), and ground fault (G).
Protection Functions • Overload (L) – Adjustable (Ir)
• Short-Circuit (S) – Adjustable (Isd, Ii)
• Ground Fault (G) – Adjustable (Ig) – *with MicroLogic 6.0/7.0*
• Measurement & Communication – *with MicroLogic 5.0/7.0*
Control Digital display, rotary handle for manual ON/OFF/Reset, and options for motorized charging mechanism.
Communication Integrated communication slots for Ethernet, Modbus, Profibus, etc. (via optional communication modules).
Mounting Style Typically Withdrawable (Draw-out) for easy maintenance and testing.
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
Ambient Temperature -5°C to +70°C (operation)
Protection Degree IP30 (as standard in its compartment)