The Schneider Electric ComPacT NSX630H 3‑Pole 630 A Molded Case Circuit Breaker (MCCB) is a heavy‑duty low‑voltage circuit protection device used in industrial and commercial electrical distribution systems.
Specifications
Specification Typical Value / Description
Product Family ComPacT NSX Molded Case Circuit Breakers
Device Type Molded Case Circuit Breaker (MCCB)
Model / Designation NSX630H 3P 630 A
Number of Poles 3‑pole (3P) — three phases protected simultaneously
Rated Current (In) 630 A @ 40 °C
Rated Operational Voltage (Ue) 690 V AC, 50/60 Hz
Rated Insulation Voltage (Ui) 800 V AC
Rated Impulse Withstand Voltage (Uimp) 8 kV
Trip Unit Micrologic 2.3 (electronic) with long‑time and instantaneous protection (varies by specific part)
Protection Functions Overload (long‑time), Short‑circuit (instantaneous), Earth‑fault/optional functions (depending on trip unit)
Utilisation Category Category A (general distribution)
Mounting Mode Fixed panel mounting
Suitability for Isolation Yes (meets isolation requirements of IEC/EN 60947‑2)
Control / Operation Manual toggle handle
Standards Compliance IEC/EN 60947‑1 and IEC/EN 60947‑2 molded case circuit breaker standards
Mechanical Durability ~15,000 operations (typical)
Electrical Durability Varies with voltage and conditions; thousands of cycles typical