Install a molded-case circuit breaker (MCCB) or an earth leakage circuit breaker (ELCB) for line protection between the power supply and main circuit power supply input terminals R/L1, S/L2, and T/L3. The MCCB or ELCB gives overload protection and also prevent damage to the main circuit and the devices that are wired to the main circuit.
Use the information in this section to select the correct MCCB or ELCB and to safely connect the device.
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The capacity of the MCCB or ELCB must be 1.5 to 2 times the rated output current of the drive. Select an MCCB or ELCB that has an operating time characteristic longer than the operating time characteristic of the drive for overheat protection (one minute at 150% of the rated output current).
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When you connect more than one drive or the drive and other device to an MCCB or ELCB, refer to Figure 1, use a magnetic contactor (MC), and set a sequence that de-energizes the drive when it outputs errors.
Figure 1. Connect an MCCB
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Electrical Shock Hazard
Use an MCCB, ELCB, or Magnetic Contactor (MC) to de-energize the drive before you wire the main circuit terminal.
If the main circuit terminal is energized during wiring, it will cause serious injury or death.
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