Accessories Current Transformers SE-CS40 SERIES Current Sensor Description The SE-CS40 series is a current transformer used with Littelfuse relays to detect earth-leakage current. Specifications Turns Ratio Current Rating Accuracy Frequency Insulation Level Operating Temperature Application Certification Compliance 800:1 50:0.0625 A 3% @ 0.04 VA 50-400 Hz 600 V, 10 kV BIL full wave -40 to 60ºC (-40 to 140ºF) SE-135, SE-145 CE IEC 60044-1 Ordering Information ORDERING NUMBER WINDOW SIZE, ID WEIGHT SE-CS40-6 160.3 mm (6.31”) 1.8 kg (4 lb) SECONDARY EXCITING VOLTAGE (VOLTS) 50.0 10.0 5.0 1.0 0.1 © 2015 Littelfuse Protection Relays & Controls www.littelfuse.com/se-cs40 0.01 10.0 0.1 1.0 SECONDARY EXCITING CURRENT (MILLIAMPERES) 20.0 30.0 Rev: 1-A-111215 Accessories Current Transformers SE-CS40 SERIES Dimensions and Mounting Diagram SE-CS40-6 TOP SE-CS40-6 MOUNTING DETAIL 19.0 (0.75) R CURRENT SENSOR M10 (0.38) 73.2 (2.88) 31.8 (1.25) 101.6 (4.00) 215.9 (8.50) 101.6 (4.00) 215.9 (8.50) 165.0 (6.50) 31.8 (1.25) X1 600 V INS. CLASS 10 KV BIL COUNTRY OF ORIGIN: USA 171.5 (6.75) 215.9 (8.50) 229.0 (9.00) H1 16 0 (6. .3 31 ) 1-800-TEC-FUSE (1-800-832-3873) 171.5 (6.75) FRONT NOTES: 1. DIMENSIONS IN MILLIMETRES (INCHES). 2. RoHS COMPLIANCE PENDING. © 2015 Littelfuse Protection Relays & Controls www.littelfuse.com/se-cs40 SIDE 3. EN 60044-1 COMPLIANT. Rev: 1-A-111215