A contactor is a special type of relay used for switching an electrical circuit on or off . They are most commonly used with electric motors and lighting applications. Specifications: Main Circuit Rating Voltage: 380v Electricity Type: AC Phase: 3 is_customized: Yes Number of Pole: 4 Model Number: JZC1-80 Main Circuit Rating Current: Other Package Includes: 1 x CHINT Relay JZC1-80 8 Normally Open