What Size Breaker Do I Need For A 3-phase Motor?
What Size Breaker Do I Need For A 3-phase Motor? For AC, 3 phase supply (400 /440 Volts) the rating of Breaker will be 6 Amps, 3 Pole or 4 Pole. How do you size a circuit breaker for a 3 phase motor? Breaker size must be rated for a minimum of 125% of the