Automatic test equipment for circuit breaker life characteristic

The utility model relates to a service life character automatic tester of circuit breakers, which is characterized by comprising an industry control computer system plugged with an IO card and an AD/DA control card, wherein the industry control computer is connected with a control interface circuit via a special data line, the control interface circuit is respectively connected with an action measurement and feedback unit, an alternative current feedback unit, an alternative current voltage adjustment control circuit, an alternative current output control circuit, a direct current output control circuit, a direct current voltage adjustment control circuit and a direct current feedback unit, the alternative current voltage adjustment control circuit is connected with the alternative current output control circuit via an adjustable alternative current power supply, the direct current voltage adjustment control circuit is connected with the direct current output control circuit via an adjustable direct current power supply, the alternative current feedback unit is connected with the adjustable alternative current power supply, and the direct current feedback unit is connected with the adjustable direct current power supply. The service life character automatic tester has the advantages of high automation level, high measurement accuracy, simple operation, stable performance and less maintenance.