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Resin-Insulated LV Current Transformers (Window-Type, Indoor Model). Model: EOS-90RN / Serving a diverse client base around the world, CIC is a leading manufacturer and supplier of current transformers, potential transformers (voltage transformers), distribution transformers, epoxy insulators, electronic meters, and other electrical and electronic products.

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Low-Voltage (LV) Resin-Encapsulated Current Transformer - Window Type - Indoor Use | Enhance Safety and Performance with Superior Epoxy Insulators | CIC

Based in Taiwan since 1974, CHALLENGE INDUSTRIAL CO., LTD. specializes in manufacturing high-quality electrical products, including Low-Voltage (LV) Resin-Encapsulated Current Transformer - Window Type - Indoor Use, current transformers, voltage transformers, distribution transformers, epoxy insulators, and power capacitors. With over 45 years of expertise and technology collaboration with Germany's MWB, CIC is ISO certified and offers products recognized for reliability in various industrial applications.

Challenge Industrial Co., Ltd. (CIC) stands at the forefront of electrical innovation, specializing in the manufacturing of current transformers, voltage transformers, distribution transformers, epoxy insulators, and power capacitors. With a legacy built on over 45 years of engineering excellence and leveraging advanced German technology, CIC commits to delivering high-quality, ISO-certified electrical solutions. Their comprehensive product range, paired with an ISO-certified approach and a TAF-accredited laboratory, ensures reliability and performance for a diverse global market. CIC is your go-to source for electrical components that power progress and efficiency.

CIC has been offering customers high-capacity power capacitors since 1974, both with advanced technology and 50 years of experiences, CIC ensures each customer's demands are met.

Resin-Insulated LV Current Transformers (Window-Type, Indoor Model). Model: EOS-90RN
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Low-Voltage (LV) Resin-Encapsulated Current Transformer - Window Type - Indoor Use

EOS-RN / EOS-RM Series

Resin-encapsulated current transformers in the EOS-RN and EOS-RM series, for indoor applications under 600 Volts or 0.72 kV, have 33-120mm windows suiting busbar/wiring primaries from 100-3200A. Robust build quality and fixed metal base ensure reliable performance. Economic models are available.

Resin-Insulated CT Instrument Transformer, 600V (0.6 kV) or 720V (0.72 kV)

About the Product

EOS-RN Series
Low-voltage window-type current transformers EOS-RN Series are resin-insulated instrument transformers designed to be used in indoor settings. In an EOS-RN current transformer, the window is sized at 33, 38, 60, 90, or 120 mm ⌀. On the primary side, wiring can be done with a busbar or with insulated wire. The specifications of the EOS-RN Series allow a Primary Current of 100A~3200A and offer a Burden and Accuracy of 15～30VA/1.0CL. When used for billing purposes, and if the Primary Current is above 200A, the EOS-RN Series Current Transformers offer a Burden and Accuracy of 5～30VA/0.5CL. (however, if the Primary Current is under 100A, it is necessary to adjust the number of primary turns). Each of the EOS-RN Series Current Transformers comes with a sealable terminal cover for its secondary side. Fixed with a metal base and featuring a fine exterior, these compact-sized current transformers are characterized by their excellent physical and electrical properties.

EOS-RM Series
Sharing similar specifications with the EOS-RN Series (please refer to Selection Table), the EOS-RM Series Current Transformers are compact in size and economically priced.

Common Specifications

Standard:  IEC or IEEE
Usage:  Indoor
Rated Voltage:  up to 0.72 kV
Frequency:  50 or 60 Hz
AC/BIL:  3/- kV
Ith = 40 In/1S


Selection Table for Current Transformer EOS Series, Low-Voltage Window Type

The following table outlines frequently requested specifications for our EOS Series low-voltage window-type current transformers; contact us if you require models with alternative standards or specifications tailored to your application.

Model Primary
Current (A)		 Secondary
Current (A)		 Burden and Accuracy
(Standard: IEC)		 Approx.
Weight (kg)
EOS-33RN 100 ~ 150 5 or 1 15VA/1.0CL 1.9
200 ~ 300 30(15)VA/1.0(0.5)CL
EOS-38RN 200 ~ 300 15VA/1.0CL 1.2
350 ~ 500 30(15)VA/1.0(0.5)CL
EOS-60RN 500 ~ 700 30(15)VA/1.0(0.5)CL 1.4
EOS-90RN 800 ~ 1200 1.7
EOS-120RN 1500 ~ 3200 2.2
EOS-33RM 100 ~ 150 5VA/1.0CL 0.9
200 ~ 300 15VA/1.0CL 0.9
EOS-60RM 400 ~ 800 1.1


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