16 Channel AC 5A-60A Current Signal Acquisition Module with Modbus RTU/TCP
Product No.: ZH-40162A
Dual Communication Interface
Current ranges: 5A / 10A / 20A / 30A / 60A AC,etc
16-Channel Independent Acquisition
High-Precision Measurement
DIN Rail 2500V Isolated 16-Channel Through-Hole AC Current Signal Acquisition Module with Harmonics & Modbus RTU/TCP
Product Overview
This product is an integrated onboard current transformer (CT) AC current acquisition and monitoring module. It adopts precision current transformers to achieve high-accuracy 16-channel AC current measurement. A dedicated True RMS measurement chip is utilized to accurately measure the RMS value of various waveform currents, providing high precision and excellent stability.
Each channel supports up to 31st-order harmonic measurement. Communication interfaces include RS485 or Ethernet. With its narrow-body design, the module is especially suitable for integration into power distribution cabinets and is widely used in applications such as environmental monitoring systems, power switchgear, and industrial furnace current monitoring.
Key Features
1.16-channel simultaneous sampling with independent A/D converters; complete data acquisition and refresh within 250 ms
2.True RMS measurement suitable for various waveform types
3.Fundamental and harmonic current RMS measurement with up to 31st harmonic analysis
4.Excellent stability; measurement accuracy is not affected by ambient temperature
5.Communication address and baud rate configurable via DIP switch or software
6.High reliability with isolation among input, communication, and power supply circuits; isolated communication chip with withstand voltage greater than 2500 V
7.Dual communication interfaces: RS485 and Ethernet can output simultaneously
8.Supports Modbus-RTU and Modbus-TCP protocols
9.Current transformer aperture diameter: 7.5 mm
10.Maximum measurable current: 150 A
Product Models
ZH-40162A-14P4/*A
16-channel AC current input, RS485 interface
ZH-40162A-34P4/*A
16-channel AC current input, Ethernet + RS485 interface
Note: “*” in the model number indicates the current measurement range of the module.
Technical Specifications
Applications
Parameter
Specification
Accuracy Class
0.2%, with linear accuracy of 0.1% FS
Resolution
0.01% FS (1/10,000 of full scale)
Current Ranges
5A / 10A / 20A / 30A / 60A AC,ect,can be customized
Overload Capability
Supports continuous measurement at 2× rated range; withstands up to 20× surge current without damage
Frequency Response
30–1000 Hz
Operating Temperature
-40°C to +70°C
Data Update Rate
250 ms
Isolation Withstand Voltage
>2500 VDC
Auxiliary Power Supply
9–30 VDC
Power Consumption
<2 W (typical <60 mA @ 24 VDC)
Output Interface
Independent RS485 or RJ45 Ethernet port
Communication Protocols
Modbus-RTU / Modbus-TCP
Data Output
True RMS values of 16 input channels, with support for up to 31st harmonic data
Communication Baud Rates
2400 / 4800 / 9600 / 19200 / 38400 / 57600 / 115200 bps
Data Format
8 data bits, 1 stop bit, odd / even / no parity (default: no parity)
Communication Configuration
Device address and baud rate configurable via DIP switch or software; DIP switch mode enabled by default
Dimensions
305 × 47 × 44 mm
Mounting Method
35 mm DIN rail installation
1.Power Switchgear & Distribution Cabinets:
High-density branch circuit current telemetry.
2.Environmental & Infrastructure Monitoring (DZ):
Multi-circuit electrical parameter tracking in telecom and industrial rooms.
3.Power Quality Analysis:
Tracking true RMS values and harmonic distortion across complex industrial AC lines.
Why Choose Us?
1.Ultra-High Density 16-Channel Design:
Consolidates 16 independent current monitoring lines into a single slim DIN-rail module, minimizing panel space.
2.Convenient Through-Hole Integration:
Features 7.5mm through-hole apertures for fast, safe, and direct primary wire routing without complex secondary wiring.
3.Comprehensive Harmonic Analysis:
Built-in capability to process up to the 31st harmonic alongside true RMS values for deep electrical insights.
4.Robust Industrial Protection:
Engineered with >2500V DC isolation and high surge tolerance (20x) to ensure longevity in heavy industrial environments.
FAQ
Q1: Do these modules feature internal data logging storage?
A1: No. These are real-time acquisition and transmission modules designed to stream parameters instantly to a PLC, SCADA, or upper computer via Modbus. They do not contain internal flash storage for historical data logging.
Q2: What is the size of the through-hole aperture?
A2: The through-hole diameter is 7.5mm, designed to accommodate standard primary conductors.
Q3: Can this module measure harmonics?
A3: Yes, it supports 16-channel 31st harmonic signal measurement capabilities.
Q4: What communication protocols are supported?
A4: The unit supports standard Modbus-RTU over RS485 and optional Modbus-TCP over Ethernet.
