Specification Brand : WMYCONGCONG BulletPoint1 : Aluminum heat sink, made of aluminum, non-corrosive and reliable, have great heat dissipation and work for long life. Works well with 10A, 25A, 40A single phase solid state relays. BulletPoint2 : Size of the heat sink: approx: 80 x 50 x 50 mm (L x W x H). BulletPoint3 : Application: Designed for single-phase solid state relays, suitable for temperature controllers and other mechanical control systems. BulletPoint4 : Easy installation:With thermal grease between the solid state relay and the heat sink, used together with the 35mm slider. BulletPoint5 : Package Content: 5x solid state relay heat sink (solid state relay not included) ConnectorType : Screw CurrentRating : 30 amps IncludedComponents : One Way Relay Module InputVoltage : 250 volts ItemName : WMYCONGCONG 5 PCS Solid State Relay Heat Sink Aluminum Heat Sink SSR Dissipation for One Single Phase Solid State Relay Radiator 10A, 25A, 40A ItemPackageDimensions_Height : 0.19 inches ItemPackageDimensions_Length : 0.35 inches ItemPackageDimensions_Width : 0.26 inches ItemPackageQuantity : 1 ItemTypeKeyword : solid-state-relays Manufacturer : WMYCONGCONG Material : Aluminum MaximumSwitchingCurrent : 30 amps MaximumSwitchingVoltage : 12 volts MeasurementSystem : Inch ModelNumber : HEAT-SINK-5P MountingType : Panel Mount NumberOfItems : 2 NumberOfTerminals : 2 OperatingVoltage : 250 volts OperationMode : Automatic PartNumber : HEAT-SINK-5P ProductDescription : Specification: Product name: aluminum heat sink. Material: Aluminum. Color: Black. Heat sink size: approx. ): 80 x 50 x 50 mm (L x W x H). Diameter of mounting threaded hole: approx. 3.6 mm. Size of the mounting hole: 7 x 5 mm (L x W). Size of the roof: approx. 60 x 50 mm (L x W). Suitable for: Single-phase semiconductor relays 10 A, 25 A, 40 A. The heat sink is specially designed for single-phase SSR solid-state relay, the current is less than 15 A.