A power relay is a device that uses an electromagnet to open or close a circuit when the input (coil) is correctly excited . They provide a high level of isolation between the control signal (coil) and the output (contacts) – typically with a rated impulse voltage of 4 or 6kV. Specification: Place of Origin:               China Brand Name:                   MRT Model Number:             JQX-70F 1Z Theory:                              Voltage Relay Usage:                                 Protective Size:                                     Miniature Protect Feature:              Sealed Contact Load:                 High Power Product name:               JQX-70F 1Z Contact Material:          AgCdO Contact Capacity:          100A 120A 250VAC Insulation Resistance: 1000M?,500VDC Operate Time:                 25ms/25ms Terminal Type:               Terminal Mounting Nominal Coil Power:     DC:2.0W AC:2.5VA Product Certifications:  CE Package Includes: 1 x High Power Relay JQX-70F 1Z