Product Overview
KAMPA NSX Series MCCB is a direct interchangeable replacement for original NSX series. It provides overload & short-circuit protection for low voltage AC circuits. It brings better cost advantage vs imported originals. Compared with cheap replicas on Alibaba, it adopts new flame retardant materials & silver alloy contacts for stable performance and low failure rate.
Product Features
Identical dimension, mounting hole and accessories as imported NSX, plug-and-play replacement;
TMD thermal-magnetic trip unit with current-limiting arc extinguishing system, excellent short-circuit breaking capacity;
High-strength flame retardant housing, double insulation. Full optional accessories including shunt release, auxiliary contact, motor operator.
Technical Parameters
| Item | Symbol | NSX100/160/250 | NSX400/630 |
| Number of poles | – | 3P / 4P | 3P / 4P |
| Control (Manual) | – | with toggle, direct or extended rotary handle | with toggle, direct or extended rotary handle |
| Connections: Fixed | – | front connections | front connections |
| Connections: Plug-in | – | front connections / rear connections | front connections / rear connections |
| Electrical characteristics as per IEC60947-2 and EN60947-2 | |||
| Rated current(A) | In | 100A,160A,250A | 400A,630A |
| Rated operating voltage(V) | Ue | AC 50/60Hz, 690V | AC 50/60Hz, 690V |
| Rated insulation voltage(V) | Ui | 750V | 750V |
| Rated impulse withstand voltage(kV) | Uimp | 8kV | 8kV |
| Utilization category | – | A | A |
| Operation performance: Mechanical | – | 8500 times | 6000 times |
| Operation performance: Electrical | – | 1500 times | 1000 times |
| Indication and control auxiliaries | |||
| Auxiliary switch | – | Available | Available |
| MX shunt coil | – | Available | Available |
| MN under voltage coil | – | Available | Available |
| Dimensions(mm) W×H×D | – | 105×161×86140×161×86 | 140×255×110185×255×110 |
Application Scope
Low voltage distribution for industrial control cabinets, commercial buildings, photovoltaic systems, construction machinery, port equipment and overseas complete power panels. Compatible with 50/60Hz global power grid.
Operating Conditions
Ambient temperature: -5℃ ~ +40℃; Max altitude:2000m; Multi-angle mounting available; IP20, suitable for cabinet installation.
Installation & Maintenance
Firm installation & standard wiring. Regularly check terminal temperature. Inspect contacts after short-circuit tripping. Test trip function every 6 months.
Precautions
Do not disassemble under live condition. Unauthorized internal modification prohibited. Troubleshoot circuit before reclosing after trip. Extra protective cabinet recommended in humid & corrosive environment.
Model Description
NSX Series
After-sales Service
12-month warranty . Fast stock delivery for standard models. English documents & professional overseas technical support. Free replacement for manufacturing defects.
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