What does a reading of infinite resistance on a contactor coil suggest?

A reading of infinite resistance on a contactor coil indicates that there is a break in the circuit, which prevents current from flowing through the coil. Normally, a functioning coil would show a finite resistance value, indicating that it can allow current to pass through when energized. When the resistance is infinite, it confirms that the coil is not completing the circuit, thus highlighting an open condition. This condition could arise from issues such as a burned-out coil or disconnection in wiring. Understanding this helps in diagnosing equipment faults and ensuring that the electrical system is safe and operational.