12mm Closed Current Transformer 100A ZH-CT12A AC Current Sensor
Product No.: ZH-CT12A
Compact 12mm through-hole design
High accuracy up to 0.1%
Easy PCB or cable installation
OEM & ODM supported
The ZH-CT12A Closed Current Transformer is a high-performance AC current sensor designed for accurate current measurement in industrial automation, smart energy systems, electrical monitoring, and power distribution.
Featuring a 12mm inner diameter, 100A maximum current capacity, 2-meter lead wire, and a compact 43 × 29 × 20 mm enclosure, the ZH-CT12A is ideal for installations requiring reliable current monitoring in limited spaces. The flame-retardant ABS housing provides enhanced safety and long-term durability, making it suitable for demanding industrial environments.
It is widely used with RS485 Modbus data acquisition modules, PLCs, energy meters, power analyzers, SCADA systems, and IoT energy monitoring solutions.
Product Features
✔ Compact 12mm through-hole design
✔ High accuracy up to 0.1%
✔ Flame-retardant ABS enclosure
✔ Excellent linearity
✔ Low phase error
✔ Stable temperature performance
✔ Easy PCB or cable installation
✔ Long-term reliable operation
✔ Suitable for industrial environments
✔ OEM & ODM supported
✔ Maximum Current up to 100A
✔2 Meter Lead Wire
Technical Specifications
Available Current Ratios
Item
Specification
Model
ZH-CT12A
Transformer Type
Closed Current Transformer
Inner Diameter
12mm
Housing Material
Flame-retardant ABS
Accuracy
0.1%
Lead Length
2 meters
Rated Current
100A Max
Size
43 × 29 × 20 mm
Output Type
Current Output
Frequency
50/60Hz (Custom Available)
Operating Temperature
-20℃ ~ +70℃
Insulation
High Insulation Design
Custom ratios are available according to customer requirements.
Primary Current
Secondary Output
10A
5mA
30A
15mA
50A
25mA
80A
40mA
100A
50mA
Applications
The ZH-CT12A is widely used in:
1.Industrial Automation
2.Energy Management Systems (EMS)
3.Smart Energy Meters
4.Power Distribution Cabinets
5.Electrical Control Panels
6.RS485 Modbus Data Acquisition Modules
7.PLC Monitoring Systems
8.SCADA Systems
9.Solar PV Monitoring
10.EV Charging Stations
11.UPS Monitoring
12.Battery Testing Equipment
13.Generator Monitoring
14.Building Energy Management Systems (BEMS)
15.Factory Power Monitoring
Product Advantages
1.High Current Measurement
Supports AC current measurement up to 100A, making it suitable for industrial equipment, power distribution cabinets, and energy monitoring systems.
2.Compact Industrial Design
With dimensions of 43 × 29 × 20 mm, the ZH-CT12A offers a space-saving solution without compromising measurement performance.
3.Flame-Retardant ABS Housing
Manufactured with industrial-grade ABS material that provides excellent insulation, mechanical strength, and fire resistance for safe operation.
4.Convenient Installation
The integrated 2-meter lead wire allows flexible installation in control cabinets, electrical panels, and monitoring systems without requiring additional wiring.
5.Stable and Reliable Performance
Built with a high-quality magnetic core to ensure excellent linearity, low phase error, and long-term measurement stability.
Why Choose JSH Electronic?
JSH Electronic specializes in industrial signal acquisition and current sensing solutions.
We provide:
--OEM Manufacturing
--ODM Design
--Fast Delivery
--Factory Direct Supply
--Strict Quality Control
--CE & RoHS Products
--Professional Technical Support
FAQ
1.What is the maximum measurable current?What is the maximum measurable current?
The ZH-CT12A supports AC current measurement up to 100A.
2.What is the inner diameter?
The transformer has a 12mm inner diameter, suitable for a wide range of power cables.
3.Can the cable length be customized?
Yes. The standard cable length is 2 meters, and custom lengths are available upon request.
4.Is it compatible with RS485 Modbus acquisition modules?
Yes. The ZH-CT12A is commonly used with RS485 Modbus data acquisition modules, PLC systems, energy meters, and industrial monitoring equipment.
5.Which industries use this current transformer?
Typical industries include:
--Industrial Automation
--Renewable Energy
--Smart Manufacturing
--Building Energy Management
--EV Charging Infrastructure
--Electrical Testing
--Power Distribution
--Energy Monitoring
