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Smart Reclosed Breaker


MT84SR series self-restoring circuit breaker overvoltage and under voltage protection miniature circuit breakers can distinguish between manual switch-off and over-current tripping, and provide different solutions for these two different conditions; over-voltage protection and under-voltage protection can be provided when the grid voltage is too low.


Technical Data

Poles 1P, 2P, 3P, 4P
Rated Voltage Single phase 230V~ /Three phase 400V~
Frequency 50/60Hz
Mechanical Life ≥10000 trips
Action Time Open≤0.2s Close≤0.3s (Exclude time delay)
Time delay of reset current fault 1st: 5s; 2nd: 20s; 3rd: 60s; 4th: lock
Protection Grade IP20
Work Temperature -25℃~+55℃
Relative Humidity ≤95%
Storage Temperature -40℃~+70℃
Installation 35mm DIN Rail Mounting
Direction of install Vertical, horizontal, and surface mounting

Operation Mode Review

Mode 1 Green: Dry contacts control + Rs485 + O/U voltage
protection(Note: mode 1 as factory default)
Mode 2 Red/Green flash: Maintenance mode
Mode 3 Red: Dry contacts control + Rs485 + O/U voltage
protection + current fault auto reclose
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