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ZCT40 Zero Sequence Current Transformer 40mm for Earth Leakage Relay

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ZCT40 Zero Sequence Current Transformer 40mm for Earth Leakage Relay

China ZCT40 Zero Sequence Current Transformer 40mm for Earth Leakage Relay supplier

Large Image :  ZCT40 Zero Sequence Current Transformer 40mm for Earth Leakage Relay

Product Details:

Place of Origin: China
Brand Name: KRIPAL
Certification: CE
Model Number: KCT40

Payment & Shipping Terms:

Minimum Order Quantity: 100 pcs
Price: negotiable
Packaging Details: Each unit packed in a individual box
Delivery Time: 20 days and depends on ordering quantity
Payment Terms: T/T, L/C
Supply Ability: 50000 pcs per month
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Detailed Product Description
Color: White Inner Dia: 40mm
Maxi Current Through Cable: 250A Mounting Thread Size: M4
Load Shift: Close To Zero Phase Shift: Close To Zero


ZCT40 Zero Sequence Current Transformer 40mm for Earth Leakage Relay





A zero-phase current transformer for use as a leakage current detecting element in a leakage current interrupter in which two magnetic materials of different permeability are provided so as to eliminate a range where the leakage current interrupter is inoperable without lowering its ability to distinguish noise components. The different magnetic materials may be provided as a single core constructed by mixing the materials of different permeability.


Otherwise, the materials can be provided as annually-shaped magnetic pieces stacked one on top of the other. Still further, the materials of different magnetic permeability may be provided as bands of materials interlude to form alternating layers or one of the materials may be provided as at least a portion of a protective case.





Electric fire monitoring

Leakage protection system

Electromagnetic relaying protection

Microcomputer protection




It can be widely used in the relay protection area

Encapsulated with epoxy resin to ensure strong insulation ability

Various mechanical dimensions, highly customer-tailored

Linear output current, high precision

Small volume, light weight, easy for installation

Compact and delicate appearance

Suitable for single-phase electricity meter as well as anti-tampering electricity meter



Technical data:


Rated Frequency

50/60 Hz

Accuracy Class

5P  10P

Rated Turns Ratio

1/210 (As customers' request)

Residual current input/output voltage 

sensing parameters

Zero Phase (Primary/



Resistive Burden







Rated primary current


Rated accurancy limit primary current


Accuracy limit primary ALF


Highest voltage for equipment


Rated power-frequency withstand voltage


Operating Temperatur

-20 to +45 degree



Features of zero phase current transformer 

﹡High sensitivity; 
Close to zero load shift and zero phase shift;
﹡Excellent balance characteristics; 
﹡Perfect temperature stability; 
﹡Small change for output voltage after passing the heavy current IDC; 
﹡A variety of configuration and output characteristics.





ZCT40 Zero Sequence Current Transformer 40mm for Earth Leakage Relay




1. Delivery time: 20 working days for bulk order and depend on ordering quantity


2. Strong production capacity and strict quality control system;


3. Your inquiry and problems related to our products or prices will be replied in 24 hours;


4. Well-trained and experienced staffs to answer all your inquires;


5. After-sale tracking service for all of our clients;


6. OEM & ODM are available; there is an our own mould tooling center in KRIPAL factory.


7. Payment: usually L/C, T/T,


8. Delivery way: Courier as door to door service (like DHL, TNT), by sea, by air (airport to airport)

Contact Details
Zhejiang KRIPAL Electric Co., Ltd.

Contact Person: Allen

Tel: +8613780109789

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