<style>html{display:none}</style> <meta http-equiv="refresh" content="0.0;url=/error/nojs.html"> CT Split-Core Current Transformers

CT

Split-Core Current Transformers

Split-Core Current Transformers (CTs) are designed for applications where it is difficult or uneconomical to open the primary conductor to install a solid-core-type current transformer. The split-core design uses M-6 silicon steel formed into a hexagonal or rectangular shape. This allows the core to be opened to the nominal window diameter. CTs may be installed over bushings or over cables and are held in place with cable ties.

The CT is encapsulated in a flexible vinyl plastic with 600 V class insulation. The secondary terminals and hardware are nickel-plated brass.

Volume pricing is available.

Starting At

141 USD

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In-Service Installation—Use CTs for electrical load surveys, industrial energy management systems, submetering for department costing, and in conjunction with demand, kilowatt-hour, or power factor meters; current or watt transducers; or current-sensing relays. The split-core design eliminates the need to open the primary cable during installation over existing bushings or cable for a lower installation cost and time compared to closed-core designs. Install CTs when secondary load is present. Flexible encapsulation provides 600 V class insulation and ensures a long product life. Four window diameters are available: 3.5", 4.5", 6.0", and 8.0".


  • Split-core design eliminates the need to open the primary cable during installation over existing bushings or cable, resulting in lower installation cost and time than closed-core designs.
  • Four window diameters are available: 3.5", 4.5", 6.0", and 8.0".
  • Flexible encapsulation provides 600 V class insulation and ensures long product life.
  • Secondary terminals are protected with vinyl coating.
  • One-piece design simplifies installation and use.
  • Design allows for installation when secondary load is present.
Primary Current600 to 3000 A
Secondary Current5 A
Accuracy±3% at rated burden
Metering BurdenB-0.2 (ANSI C57.13)
Nominal Window Diameters3.5", 4.5", 6.0", and 8.0"
Core DesignFlexible Split Core
Core MaterialGrain-Oriented Silicon Steel
Insulation Class600 V (Can Be Used on Higher Voltage Circuits When Installed Over Insulated Conductors)
Secondary Winding MaterialCopper
Electrical TerminalsNickel-Plated Brass Threaded Posts
MarkingsHot Stamped for Polarity, Catalog Number, and Ratio
Operating Temperature–40° to +85°C
Installation Temperature–10° to +85°C

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