Features:Designed for household applications, 35mm DIN rail mount. Adopt superior insulation material to enhance the operation security to a great extent. Compact modularization design, easy to mount. A wiring diagram is printed on the surface of the contactor. No noise and electric spark during operation. Specification:Rated Control Supply Voltage (Us): AC 24V, AC 220V/230V(Optional)Rated Current: 20A(AC-7a), 7A(AC-7b)Conventional Thermal Current (lth): 25ARated Insulation Voltage (Ui): 500VACRated Working Voltage (Ue): 250VACNumber of Poles: 2P(1NO + 1NC)Maximum Number of Switching Operations: 30times/hourElectrical Life: 100,000 timesMechanical Life: 1,000,000 timesRelationship between 20A operating voltage and control power changesOperating VoltageControl PowerAC-7a110V2200W250V4500W400V7500WAC-7b110V770W250V1600W400V2700WPackage Weight: Approx. 128gRated Duty:1) 8-hour dutyThis is the basic duty, and conventional heating current Ith of the contactor is determined by this working system.2) Intermittent periodic dutyThe rated operating frequency of the contactor under this duty is 30 times/h, and the load factor is 40%.Action(Operation) Condition:When the ambient temperature is in the range of -5C to +60C, apply the rated control power supply voltage Us to the contactor sucking coil to make it heat up to a steady state, Then the contactor should be reliably closed under any voltage of (85% ~ 110%) Us. Its release voltage is (20%~75%) Us.Package list:1 x AC Contactor.