Solid-Core Current Transformers

Flex-Core® manufacturers a wide range of Solid-Core Current Transformers, including Indicating Class, Metering Class, Relay Class, Utility Class and Wound Primary solid-core current transformers for most common applications.  We offer a large in-stock inventory and same-day shipping when ordered before 3PM Eastern.

If you have a specific application and need a solid-core current transformer with a custom ratio, please contact support.

Low Cost, "Donut" Style, Standard Meter Output

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
2RL0-50 thru 0-400A5AAmmeters, Control Relays, Sub-Meters1.05″
7RL0-300 thru 0-1600A5AAmmeters, Control Relays, Sub-Meters2.50"
AL0-50 thru 0-400A5AAmmeters, Control Relays, Sub-Meters1.05″

Low Cost, Secondary Terminals, Mounting Feet, Standard Meter Output

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
2SFT
0-50 thru 0-400A5AAmmeters, Control Relays, Sub-Meters1.13″
5SFT
0-100 thru 0-600A5AAmmeters, Control Relays, Sub-Meters1.56″
MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
2SFT
0-50 thru 0-400A5AAmmeters, Control Relays, Sub-Meters1.13″
5SFT
0-100 thru 0-600A5AAmmeters, Control Relays, Sub-Meters1.56″

Metal Mounting Bracket, Standard Meter Output

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
58RBL
0-50 thru 0-300A5AAmmeters, Control Relays, Sub-Meters1.25"
7RBL0-400 thru 0-800A5AAmmeters, Control Relays, Sub-Meters2.50"
76RBL0-1000 thru 0-2000A5AAmmeters, Control Relays, Sub-Meters3.00"

Revenue Grade, "Donut" Style, Standard Meter Output

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
2DARL0-50 thru 0-300A5ARevenue Meters, Service Meters1.00″
5ARL0-100 thru 0-600A5ARevenue Meters, Service Meters1.56″
180RL0-50 thru 0-1000A5ARevenue Meters, Service Meters2.50″
19RL0-500 thru 0-3000A5ARevenue Meters, Service Meters4.25″

Revenue Grade, Secondary Terminals, Metal Mounting Bracket, Standard Meter Output

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
60RBT0-50 thru 0-200A5ARevenue Meters, Service Meters0.94″

Revenue Grade, Secondary Terminals, Standard Meter Output

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
19SHT
0-500 thru 0-3000A5ARevenue Meters, Service Meters4.25″
19SHTI
0-800 thru 0-3000A5ARevenue Meters, Service Meters4.25″
125
0-1000 thru 0-4000A5ARevenue Meters, Service Meters6.31"
1260-1500 thru 0-5000A5ARevenue Meters, Service Meters8.25"
JAB-0C0-100 thru 0-4000A5ARevenue Meters, Service Meters4.50″ x 3.50″
191
0-100 thru 0-400A5ARevenue Meters, Service Meters1.25"
194
0-400 thru 0-800A5ARevenue Meters, Service Meters2.50"
1950-800 thru 0-2000A5ARevenue Meters, Service Meters3.062″

Revenue Grade, Secondary Terminals, Standard Meter Output, Higher Accuracy

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
125I
0-1600 thru 0-5000A5ARevenue Meters, Service Meters6.31"
126I0-2500A thru 0-5000A5ARevenue Meters, Service Meters8.25"
191I0-200 thru 0-400A5ARevenue Meters, Service Meters1.25"
194I0-300 thru 0-800A5ARevenue Meters, Service Meters2.50"

Revenue Grade, Secondary Terminals

MODEL #
PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
19SHT-1V0-100 thru 0-800A1VRevenue Meters, Service Meters4.25″
125-1V0-500 thru 0-2000A1VRevenue Meters, Service Meters6.31"
126-1V0-500 thru 0-3000A1VRevenue Meters, Service Meters8.25"

Revenue Grade, Secondary Terminals, Multi-Ratio, Relay Class, Standard Meter Output

MODEL #
PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
143MR0-50 thru 0-5000A5ARevenue Meters, Service Meters, Protective Relays7.31″

Revenue Grade, Secondary Terminals, Extended High Accuracy, Standard Meter Output

MODEL #
PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JAB-0S0-600 thru 0-2000A5ARevenue Meters, Service Meters4.50″ x 3.50″

Relay Class, Large Window, Standard Meter Output

MODEL #
PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
593
0-50 thru 0-500A5AProtective Relaying8.06″ x 22.06″

Revenue Grade, Secondary Terminals, Standard Meter Output, Primary Bar

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JAK-0C

0-100 thru 0-2000A5ARevenue Meters, Service Meters1.50" up to 3.62"
CTM-0C
0-5 thru 0-1200A5ARevenue Meters, Service MetersWound Primary

Revenue Grade, Secondary Terminals, Extended High Accuracy, Standard Meter Output, Primary Bar

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JAK-0S

0-600 thru 0-1000A5ARevenue Meters, Service Meters3.62"

Revenue Grade, Secondary Terminals, Standard Meter Output, Relay Class

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
110

0-200 thru 0-3000A5ARevenue Meters, Service Meters, Protective Relays4.00"

114
0-50 thru 0-1600A5ARevenue Meters, Service Meters, Protective Relays3.25"
130
0-200 thru 0-4000A5ARevenue Meters, Service Meters, Protective Relays5.75″
143
0-50 thru 0-6000A5ARevenue Meters, Service Meters, Protective Relays7.31″

Revenue Grade, Secondary Terminals, Standard Meter Output, Relay Class, Switchgear Style

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
780

0-50 thru 0-6000A5ARevenue Meters, Service Meters, Protective Relays6.50″


Revenue Grade, Secondary Terminals, Standard Meter Output, Relay Class, Switchgear Style, Multi-Ratio

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
781MR
0-50 thru 0-4000A5ARevenue Meters, Service Meters, Protective Relays6.50″


Revenue Grade, Secondary Terminals, Standard Meter Output, Relay Class, Large Window

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
147
0-2000 thru 0-10000A5ARevenue Meters, Service Meters, Protective Relays10.00″

Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
189
0-2.5 thru 0-100A5ARevenue Meters, Service Meters, Wound Primary

Revenue Grade, Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
190X
0-0.1 thru 0-15A1A, 5A, 10ARevenue Meters, Service Meters, Wound Primary

190XSUM0-5 plus 0-5A5ARevenue Meters, Service Meters, Wound Primary

5kV, Revenue Grade, Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary, Meduim Voltage

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
CTWH3-60-T50
0-5 thru 0-600A5ARevenue Meters, Service Meters, Protective RelaysWound Primary
JKM-3C0-5 thru 0-800A5ARevenue Meters, Service Meters, Protective RelaysWound Primary

15kV, Revenue Grade, Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary, Meduim Voltage

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JKM-5C0-5 thru 0-800A5ARevenue Meters, Service Meters, Protective RelaysWound Primary

5kV, Revenue Grade, Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary, Outdoor, Meduim Voltage

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JCK-30-5 thru 0-800A5ARevenue Meters, Service Meters,Wound Primary

8.7kV, Revenue Grade, Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary, Outdoor, Meduim Voltage

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JCK-40-5 thru 0-800A5ARevenue Meters, Service Meters,Wound Primary

15kV, Revenue Grade, Low Ratio, Secondary Terminals, Standard Meter Output, Wound Primary, Outdoor, Meduim Voltage

MODEL #PRIMARY CURRENTSECONDARY CURRENTTYPICAL APPLICATIONINSIDE DIAMETER (inches) 
JCK-5C
0-5 thru 0-1200A5ARevenue Meters, Service Meters, Protective RelaysWound Primary