Chapter 3—Installation and WiringPower Xpert C445 Global Motor Management Relay MN042003EN—January 2019 www.eaton.com 29Using Power Xpert C445 with External CTsC445 covers systems from 0.3 to 800A. Embedded CTsprovide measurement up to 136A. Motor applications from136A to 800A require external CTs. Systems using externalCTs always use the 1-5 Amp Measurement Module(C445MA-005…).Eaton offers the following CTs for use with C445. Catalognumbers are for one CT. Users may purchase CTs fromEaton or use their own.Table 7. C445 CT Offering Catalog Numbers (XCT_ CTs)Note1 Order 3 per system.Mounting (XCT_ CTs)Each XCT_CT comes with a bracket mounting kit for panelmounting. Secondary terminals are 8-32 brass terminals withone flatwasher, lockwasher and regular nut.Dimensions (XCT_ CTs)Figure 37. XCT300-5, XCT600-5 (inches) XCT800-5 (inches)CT Range Description Qty. 1 Use with … Catalog Number17–300A 300:5 single-phase CT, 1.25 inch diameter hole, Class C50 1 C45MA-005_ XCT300-575–600A 600:5 single-phase CT, 2.00 inch diameter hole, Class C50 1 C45MA-005_ XCT600-5100–800A 800:5 single-phase CT, 2.50 inch diameter hole, Class C50 1 C45MA-005_ XCT800-5
