Masterpact NW10N1, 4 P, 1000A, max. breaking capacity 42kA. Product range: Masterpact NW - Product or component type: Base frame - Device short name: Masterpact NW10 - Circuit breaker name: Masterpact NW10 - Neutral position: left - Network connection: AC - Line breaker performance index: N1 - Usage category: Category B.