The ABB SPAM150C-AA RS641006 is a motor protection relay designed to safeguard electric motors from various operational issues.

• Motor Overload Protection: It detects when a motor is drawing excessive current for extended periods, which can lead to overheating and damage. The relay trips the circuit breaker, disconnecting the motor to prevent burnout.
• Phase Failure Protection: It identifies situations where one of the phases supplying the motor is lost. This unbalanced condition can cause the motor to malfunction or overheat. The SPAM150C-AA trips the breaker to protect the motor.
• Other Potential Features (depending on specific model): Some variants might offer additional functionalities like earth fault protection, locked rotor protection, and thermal overload protection.

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