heavy duty 4-prongs SPST relays Use Relay Harness, or female Crimp Connectors High 40A coil capacity- to handle those high current applications with ease Package Include: 4 x 40A 4-Pin 12V Vehicle Relays Mechanical life of 10,000+ cycles Contact Data: Contact Material: AgSnO12 Contact Form: 1Z(C) / 1H(A) Contact Ratings: No: 40A 72VDC Contact Resistance: 100mMax at 6VDC 1A Max switching Current: 40A Max Switching Power: 560W Life Expectancy Electrical: 100,000 Operations (at 30 Operations/min) Life Expectancy Mechanical: 10,000,000 Operations Coil Specification: Nominal Voltage(): 12V Coil Resistance (1.8W): 80 Max Operate Voltage (): 6.5~8.0 Mix Release (): 1.2~3.6 Max Applicable Voltage (): 14 Characteristics: Temperature Range: -30°C ~+80°C Vibration Resistance: 10~55Hz, 1.5mm Shock Resistance: Operations Extremes: 10g Damage Limits: 100g Humidity: 40%~85% Insulation Resistance: 100m ohm Min at 500VDC Safety Standard: Dielectric Strength Between Open Contacts: 500VAC (for one minute/sec) Between Contact and coil: 750VAC (for one minute/sec) Operate Time: 7ms Release Time: 5ms Colour: black Material: plastic Size: 2.7 x 2.7 x 2.5cm Package Contents: 4 x Relay Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.