Mitsubishi Instantaneous tripping Circuit Breakers
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In case of depending on a kind and a characteristic of the load, MCCBs or ELCBs have only Instantaneous characteristic are used.
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DC is more difficult to cut off than AC because there is no current zero point, and standard products are not available for DC high voltages. For this reason, use a circuit breaker for DC special voltages.
4-pole products are available for 550VDC and 600VDC. (The NF1250-SDW is a 3-pole product.)