AEMC AC Current Probe Model C177A The AC Current Probe Model C177A features a measurement range of 5mA to 200A, with a transformation ratio of 10,000:1. Its maximum clamping diameter is 2.05" (52mm). The probe includes a 6.5' (2m) lead with proprietary CA connector. The Model C177A is designed for use with Multi-Function Installation Testers Models C.A 6116/6116N, and C.A 6117. Meter Compatibility C.A 6116N, C.A 6117 Maximum Clamping Diameter 2.05" (52mm) Current Range 200A Measurement Range 5mA to 200A Transformation Ratio 10,000:1 Output 6.5ft (2m) lead with proprietary CA connector Operating Temperature 32° to +113°F (0° to +45°C); 90% RH Storage Temperature -40° to +158°F (-40° to +70°C) Operating Relative Humidity 90% RH Dimensions (HxWx D) 8.50 x 4.37 x 1.77 (216 x 111 x 45mm) Weight 1.21 lb (550g) Pollution Degree 2 Ingress Protection IP 40, IP 30 with jaws open Safety Compliance IEC 61010-2-032, EN 61010-1, EN61010-031 300V CAT IV,600V CAT III