The Schneider Electric Compact NSX100F 50A 4P 3D is a specialized 4-pole, 50A, fixed-type molded case circuit breaker (MCCB) from the Compact NSX series. The unique "3D" configuration indicates a 3-pole protected + 1 switched neutral design, providing a specific and cost-optimized solution for three-phase systems where the neutral conductor requires switching but not necessarily overcurrent protection.
Specifications
Parameter Specification
Product Series Compact NSX
Model / Frame NSX100F
Configuration 4 Poles 3D
• 3 Protected Poles (L1, L2, L3): Full thermal-magnetic overload and short-circuit protection.
• 1 Switched-Only Neutral Pole (N): Disconnects with the phases but has no thermal or magnetic trip elements.
Rated Current (In) 50 Amperes (Applies to the three protected phase poles).
Frame Rating (Iu max) 100 A
Trip Unit Type Thermal-Magnetic (TM-D) (standard for this configuration).
Breaking Capacity (Icu @ 400V) 36 kA, 50 kA, or 70 kA (Selectable via model suffix).
Rated Operational Voltage (Ue) 400/415V AC (3P+N systems).
Neutral Pole Rating Typically rated for the same frame current (100A) as the phases but without overload/short-circuit protection.
Connection Front or rear connection, screw terminals.
Mounting Fixed Mounting (F).
Width (4P 3D) Approximately 140 mm (same as a standard 4P version).
Mechanical Life 20,000 operations
Standards IEC 60947-2