© 2018 Littelfuse Protection Relays & Controls
Protection Relays
Current Transformers
www.littelfuse.com/www.littelfuse.com/currenttransformers
Rev: 1-A-081518
CURRENT TRANSFORMERS
Instrumentation and metering transformers
Dimensional Drawing
76RL56RL2RL
DONUT STYLE
76SFT56SFT2SFT
FOOT MOUNTED WITH BRASS TERMINALS
Donut Style Foot Mounted
Description
Littelfuse offers a wide array of instrument rated current
transformers in 1-3 inch diameter opening.
Voltage class: 600V
BIL rating: 10kV
Certification: cURus (WICC File E100575)
Ordering Information
DONUT MODEL WINDOW CURRENT RATIO
CT-0050-D10 1.0" 50:5
CT-0075-D10 1.0" 75:5
CT-0100-D10 1.0" 100:5
CT-0150-D10 1.0" 150:5
CT-0200-D10 1.0" 200:5
CT-0300-D10 1.0" 300:5
CT-0200-D20 2.0" 200:5
CT-0300-D20 2.0" 300:5
CT-0400-D20 2.0" 400:5
CT-0500-D20 2.0" 500:5
FOOTED MODEL WINDOW CURRENT RATIO
CT-0050-F10 1.0" 50:5
CT-0100-F10 1.0" 100:5
CT-0150-F10 1.0" 150:5
CT-0200-F10 1.0" 200:5
CT-0300-F10 1.0" 300:5
CT-1200-F15 1.5" 1200:5
CT-0150-F20 2.0" 150:5
CT-0200-F20 2.0" 200:5
CT-0300-F20 2.0" 300:5
CT-0400-F20 2.0" 400:5
CT-0600-F20 2.0" 600:5
CT-0400-F30 3.0" 400:5
CT-0800-F30 3.0" 800:5
CT - xxx - D10
Style
Series
Window Size
Current Ratio
D = Donut Style
F = Footed Style
10 = 1.0 inch
15 = 1.5 inches
20 = 2.0 inches
30 = 3.0 inches
xxx:5 current ratio
Part Numbering System
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products
are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.