The Schneider Electric Masterpact NSX630 is a high-current, three-pole molded case circuit breaker (MCCB) from the flagship Masterpact NSX range. With a 630A frame, it is engineered to provide superior protection, control, and connectivity for main incoming feeders, busbar ties, and large power distribution circuits in demanding commercial, industrial, and infrastructure applications.
Parameter Value / Description
Product Line / Frame Size Masterpact NSX630
Rated Current (In) 630 A (Frame Rating). The operational current is set and adjusted via the installed electronic trip unit.
Number of Poles 3
Breaking Capacity (Key Selection) Must be specified:
• N (Standard): ~50 kA Icu
• S (Standard High): ~70 kA Icu
• H (High): ~100 kA Icu
• L (Extreme High): ~150 kA Icu
*Example: NSX630N, NSX630H
Rated Ultimate Breaking Capacity (Icu) Depends on the selected breaking capacity rating (N, S, H, L) and operational voltage. (e.g., 100 kA at 415V AC for an H rating per IEC 60947-2).
Rated Operational Voltage (Ue) Up to 690 V AC
Trip Unit (Essential Selection) Electronic Micrologic only. Wide range available:
• Basic Protection: Micrologic 2.0A - 6.0A (L, S, I, G functions).
• Protection + Measurement: Micrologic 5.0E - 6.0E (adds power, energy metering).
• Protection + Comms: Micrologic 5.0A/6.0A/7.0A (adds embedded communication).
Communication Native in advanced units (Micrologic A, E). Supports Ethernet, Modbus TCP, Profibus DP, etc., enabling direct integration into BMS/SCADA and EcoStruxure Power platforms.
Standard IEC 60947-2
Mounting Style Primarily Withdrawable (standard feature for easy maintenance). Also available in Fixed version.
Connection Front or Rear connection (depends on the specific kit/housing).
Width Approximately 252 mm (for a 3-pole withdrawable unit. Confirm with exact catalog reference).