1. Plural of contactor; electrical switches or devices that open and close circuits, typically controlled by an electromagnet and used to control motors, lights, or other equipment.
Usage: technical; commonly used in electrical engineering and industrial applications
2. Plural of contactor; persons or companies that enter into contracts to perform work or provide services.
Usage: business/legal context

Examples

• The electrician replaced the worn contactors in the control panel.
• Industrial motors rely on contactors to manage high-voltage circuits safely.
• The HVAC system uses multiple contactors to regulate compressor operation.
• Contactors in the factory equipment needed regular maintenance to prevent failures.
• The electrical code requires specific types of contactors for commercial installations.