Mitsubishi NF400-SEW 4P 400A Description Description Mitsubishi Circuit breaker 4pole. Ir = 200 – 400A; Icu = Ics = 42kA at AC 440V Related products Mitsubishi FX2N-48ER-ES/UL MITSUBISHI FR-PU04 MITSUBISHI A3ACPUR21 Mitsubishi FX2N-16EX-ES/UL Mitsubishi FX2N-48ET-ESS/UL MITSUBISHI Q02HCPU