Merlin Gerin NS400 H

Merlin Gerin NS400 H
Description: The NS400 H is a range of open frame medium voltage (IEC) circuit breakers from Schneider Electric (formerly Merlin Gerin). They are designed to protect medium voltage electrical circuits against fault currents (short circuit and overload).
Features:
Nominal voltages: 7.2-24 kV
Nominal currents: 400-630 A
Rated breaking capacities: up to 25 kA
Arc extinguishing technologies: vacuum or nitrogen
Mechanical life: 20,000 cycles
Electrical life: 10,000 cycles
Degrees of protection: IP43, IP54, IP55, IP65
Applications: Merlin Gerin NS400 H circuit breakers are widely used in various industrial and commercial applications including:
Electricity distribution
Motor circuit protection
Data centers
Power plants
Substations
Advantages:
High safety and reliability
Long life span
Easy to install and maintain
Compact and space efficient
Compliance with IEC standards
Specifications:
Operating voltage (Ui): 7.2-24 kV
Rated long-term current (In): 400-630 A
Nominal short-circuit current (Icn): 25 kA
Short circuit power (Pcc): 10-35 MVA
Short circuit protection operating time: ≤50ms
Overload protection operating time: adjustable (0.1-30 s typical)
Available options:
Electronic or thermal trigger units
Auxiliary contact
Malfunction alarm
Manual or remote operating mechanism