200 Product Name Circuit Breaker Contact Resistance Test .Measuring Range 0 ~ 2999.9μΩ Test Current DC 50A, 100A, 150A, 200A, Fixed Output. Accuracy ±(0.5% Rd+2D) Continuous Working Time 5s~599s Communication Mode USB Power Supply AC220V±10% 50Hz Power of The Whole Machine 1200...