Product Overview
The DDS3366D-J is engineered to track energy consumption in single-phase AC circuits. Key attributes from the Alibaba listing:
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Accuracy class: 1%
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Measuring energy range: 0 – 999,999.9 kWh
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Supported current ranges: 5(40)A and 10(60)A
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Dimensions: 104.0 × 36.0 × 70.0 mm
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Operating temperature: –10 °C to +50 °C
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Output voltage (auxiliary): 220 V
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Communication: RS-485 (Modbus RTU / DL/T645-2007)
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Installation: DIN-rail 35 mm
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Feature: Safety, lightweight, time display function
It is ideal for metering and monitoring in single-phase circuits such as residential loads, sub-metering, AC charging piles, and industrial panels.
| Product Name | YADA DDS3366D-J AC Energy Meter | |||
| Meter Type | Single Phase AC Energy Meter | |||
| Model No. | DDS3366D-J | |||
| Brand Name | YADA | |||
| Display Type | LCD Display | |||
| Measuring Energy Range | 0-99999.99kWh | |||
| Accuracy Class | Class 0.5/1 | |||
| Operating Temperature | -10℃~ +50℃ | |||
| Relative Humidity | <75% (annual average) | |||
| Communication | RS485 communication interfaces, | |||
| ModBus-RTU and DL/T645-2007 Protocol. | ||||
| Installation | 35mm DIN rail | |||
| Rated current | 5(40)A, 10(60)A | |||
| Rated Voltage | AC220V/380V | |||
| Pulse Constant | 1600imp/kWh、800imp/kWh | |||
| Frequency Range | 45Hz~60Hz | |||
| Warranty | 2 Years | |||
| Dimensions & Weight | 104.0mm*36mm*70.0mm, 0.15kg | |||
| Appication | AC EV Charging Pile | |||
Main Function

Key Features & Benefits
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Single-Phase Measurement — Designed for 230 V single-phase AC circuits
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Accurate & Reliable — 1% accuracy class ensures dependable readings
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Multiple Current Options — 5(40)A and 10(60)A models for flexible deployment
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Large Energy Range — Up to 999,999.9 kWh cumulative display
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RS-485 Communications — Supports Modbus RTU / DL/T645 for integration into BMS/EMS systems
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DIN-Rail Mounting — 35 mm standard rail fits most electric distribution panels
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Compact & Lightweight — Slim profile makes installation easy even in dense switchgear
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Digital LCD Display — Real-time parameter visibility including time display
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Durable Design — Built for stable operation from –10 °C to +50 °C
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Ideal for Sub-metering & EV Use — Suitable for AC charging and load monitoring scenarios
Applications
The DDS3366D-J is well suited for:
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Single-phase load monitoring (residential, small commercial)
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AC charging stations / piles requiring meter integration
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Sub-metering in electrical panels
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Energy management systems for low-voltage circuits
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Remote monitoring in IoT / smart building setups
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Retrofit into existing single-phase installations
Why Choose YADA DDS3366D-J?
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Proven Accuracy — 1% accuracy for reliable billing / billing-equivalent applications
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Communication-Ready — RS-485 Modbus RTU / DL/T645 ensures system interoperability
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Flexible Current Ranges — Two models available for different load levels
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Compact & Panel-Friendly — Slim design, ideal for tight installations
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DIN-Rail Compatibility — Easy to mount within standard distribution enclosures
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User-Friendly Display — LCD readout including time/date helps on-site checks
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Built to Last — Stable within –10 °C to +50 °C, safe and lightweight design
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Suitable for Sub-Metering & EV Integration — Great for systems requiring per-load measurement
Dimension & Installation

FAQ
Q: What does “5(40)A / 10(60)A” mean?
A: It indicates the nominal current and the extended current capability (for example, 5A nominal with capacity up to 40A).
Q: What is the communication protocol?
A: It supports RS-485 with Modbus RTU and DL/T645-2007 protocol.
Q: What is the accuracy class?
A: It is class 1 (1 %) per supplier listing.
Q: What is the working temperature range?
A: –10 °C to +50 °C.
Q: What is the mounting method?
A: DIN-rail (35 mm) mounting suitable for standard electrical distribution panels.
Request An AC Energy Meter Quote
Send the phase configuration, maximum load current, required accuracy class, communication protocol and whether the reading is used for billing. YADA’s engineering team confirms the model.





