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Zero Sequence Current Transformers Image 1

Zero Sequence Current Transformers

Applications

  • Current and voltage monitoring
  • Electric leakage prevention device
  • Low current grounding system
  • Relay protection device

Features

  • Low cost
  • High accuracy
  • More than 10 dimensions available
  • Various specifications available
Download Datasheet

Specifications

  • Accuracy class
    0.2, 0.5, 1.0, 2.0
  • Frequency
    50-2000 Hz
  • Working temperature
    -20℃ - +50℃ / (optional) -40℃- +85℃
  • Working voltage
    600V AC
  • Dielectric strength
    2500V AC/min
  • Impulse voltage
    5000V (1.2/50μs standard lightning wave)
  • Environment
    RoHS compliant

Product Overview

Yuanxing Electronics Zero Sequence Current Transformers deliver high-precision monitoring for leakage prevention, relay protection, and grounding systems. Featuring solid and split-core configurations for cables and busbars (ZCTA, ZCTSA, ZCTB, ZCTSB series), they support inputs from 10mA to 20A. These transformers provide accuracy classes of 0.2 to 2.0 across a 50-2000 Hz frequency bandwidth. With 2500V AC dielectric strength and 5000V impulse protection, they ensure safety in harsh conditions. Operational from -20°C to +50°C and RoHS compliant, they are essential for manufacturers requiring reliable electronic components.

Typical Products

Part Number Window Size (mm) Turn Ratio Input Range Accuracy Burden Dimension (mm)
ZCTA3051 30 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
76-25-67
ZCTA4551 45 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
98-28-86
ZCTA6551 65 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
124-28-105
ZCTA8051 80 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
140-32-130
ZCTA1001 100 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
167-32-148
ZCTA1501 150 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
225-32-206
ZCTA2001 200 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
296-40-274
Part Number Window Size (mm) Turn Ratio Input Range Accuracy Burden Dimension (mm)
ZCTSA3051 30 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
76-25-67
ZCTSA4551 45 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
98-28-86
ZCTSA6551 65 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
124-28-105
ZCTSA8051 80 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
140-32-130
ZCTSA8051 80 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
140-32-130
ZCTSA1001 100 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
167-32-148
ZCTSA1501 150 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
225-32-206
ZCTSA2001 200 1000:1 or 2000:1 10mA to 20A Class 0.2 or 0.5 ＜100Ω L-W-H
296-40-274
Part Number Window Size (mm) Turn Ratio Input Range Accuracy Burden Dimension (mm)
ZCTB1125 112*25 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
186-28-70
ZCTB1435 142*35 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
270-28-85
ZCTB1935 192*35 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
310-28-95
ZCTB2345 232*45 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
310-28-95
ZCTB3248 320*48 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
417-32-99
Part Number Window Size (mm) Turn Ratio Input Range Accuracy Burden Dimension (mm)
ZCTSB1125 112*25 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
186-28-70
ZCTSB1435 142*35 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
270-28-85
ZCTSB1935 192*35 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
310-28-95
ZCTSB2345 232*45 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
310-28-95
ZCTSB3248 320*48 1000:1 or 2000:1 10mA to 20A Class 1.0 or 3.0 ＜100Ω L-W-H
417-32-99

Frequently Asked Questions

Current transformers/sensors, voltage transformers/sensors, and Rogowski coils from Yuanxing are widely adopted across the following industries:
Electric Power Grids, Renewable Energy, Rail Transit, Industrial Automation & Motor Control, Aerospace, Data Centers, Telecommunications.

Yes. Our in-house R&D and engineering teams can support customized current/voltage transformers, Rogowski coil and current/voltage sensor designs, including special ratios, form factors, output signals, and mounting requirements.

Yes. We can supply detailed product specifications, datasheets, and wiring/application notes for each standard or customized configuration.

Yes. With over 20 years of export experience, we serve customers worldwide and provide full sales and logistics support for both small-quantity orders and large-volume projects.

Please submit an inquiry via email or our online contact form. For selected products, we can provide free samples; shipping will be arranged using your courier account (e.g., DHL / FedEx / UPS).