Siemens SENTRON, Window Current Transformer, , 250A Input, 1 A Output, 250:1. Overall Height: 65.6mm. Overall Width: 60mm. Overall Depth: 75.3mm. Minimum Temperature: -30°C. Maximum Temperature: +55°C. For Use With: Sentron Power Monitoring Devices. Mounting Type: Chassis Mount. Dimensions: 60 x 75.3 x 65.6 mm. MPN: 4NC5123-0DE21