BU-3700-TEIKOUKI GRZG200 | Brake discharge resistor for FR-BU2。Braking Unit for FREQROL Inverter | Mitsubishi Electric | MISUMI。Brake Options。Braking Unit for FREQROL Inverter | Mitsubishi Electric | MISUMI。6D172 MITSUBISHI FREQROL BRAKE OPTION BU-3700 動作保証。