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Hi guys, just making sure that I'll be choosing the right size of MPCB, motor connected in star with current 3.32A, would a MPCB rated at 4A - 6.3A be good enough? Thanks!
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Discuss Sizing MPCB in the Electricians' Talk area at ElectriciansForums.net
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No. Use one whose range covers the FLC of the motor, and set it to that value.
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that would be fine if your also using a contactor and overload relay that is set to FLC of motor.
but if that is the only device protecting the motor from overload then as @SheffSimon says above, get the correct matched rating (nameplate of motor, not actual current measured) or the motor will burn out before the breaker trips.
but if that is the only device protecting the motor from overload then as @SheffSimon says above, get the correct matched rating (nameplate of motor, not actual current measured) or the motor will burn out before the breaker trips.
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