4G IoT Communication
Built-in 4G IoT module for wireless uplink; SIM card number and IMEI shown on the display.
DDSYU353-4G Single-Phase Prepaid Power Data Collector with 4G
DDSYU353-4G is a single-phase two-wire DIN-rail prepaid power data collector with a built-in motorized relay and 4G IoT module. It auto-connects on power-up with no on-site configuration, enabling remote meter reading, remote recharge, remote balance clearing and remote tripping, plus over-power tripping and automatic tripping on balance exhaustion. Class 1.0 accuracy, 5(60) A, LCD 5+1 display.
DIN-Rail Mounting
1P2W Direct Connection
4G IoT Communication
5(60) A Maximum current
220 V Reference voltage
Class 1.0 Active energy accuracy
−20°C to +70°C Operating temperature
Product Highlights
4G Prepaid Metering with Remote Load Control
Class 1.0 Active Energy Accuracy
Class 1.0 active-energy accuracy per the applicable GB/T standard, ensuring dependable billing and sub-billing data.
Multi-Parameter LCD Display
LCD 5+1 shows remaining credit, total energy, voltage, current, active power and power factor at a glance.
Prepaid Load Control
Built-in motorized relay supports prepaid load control and automatic disconnection on credit exhaustion or over-power.
Remote Recharge & Control
4G communication supports remote meter reading, recharge, balance clearing and remote trip control.
Over-Power & Low-Balance Trip
Automatically trips on over-power or when the prepaid balance is exhausted.
Applications
Applications and Selection Guidance
Technical Specifications
Technical Specifications
| Reference voltage | 220 V |
| Reference current | 0.25–0.5(60) A / 5(60) A |
| Frequency | 50 Hz |
| Start current | 0.004 Ib (20 mA) |
| Pulse constant | 1600 imp/kWh |
| Power consumption | 2 W / 10 VA |
| Active energy accuracy | Class 1.0 |
| Communication interface | 4G (built-in IoT module) |
| Auto-connect | Auto-connects on power-up, no on-site configuration required |
| Network info | SIM card number and IMEI shown on the display |
| Prepaid function | Pay-before-use with built-in motorized relay for load control |
| Remote operations | Remote meter reading, remote recharge, remote balance clearing and remote tripping |
| Trip protection | Over-power tripping and automatic tripping on balance exhaustion |
| Display | Remaining credit, total energy, voltage, current, active power, power factor, meter number, SIM/IMEI and firmware version |
| Temporary overdraft | Temporary reconnection overdraft via the multi-function button |
| Operating temperature | −20°C to +70°C |
| Relative humidity | ≤75% |
| Wiring | Single-phase two-wire (1P2W), direct connection |
| Applicable standards | GB/T 17215.321-2008 / GB/T 17215.211-2006 / GB/T 20138-2006 |
Structure & Dimensions
DDSYU353-4G Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is DDSYU353-4G?
DDSYU353-4G is a single-phase two-wire DIN-rail prepaid power data collector with a built-in motorized relay and 4G IoT module. It auto-connects on power-up with no on-site configuration, enabling remote meter reading, remote recharge, remote balance clearing and remote tripping, plus over-power tripping and automatic tripping on balance exhaustion. Class 1.0 accuracy, 5(60) A, LCD 5+1 display.
What communication does it use?
Built-in 4G IoT module that auto-connects on power-up; SIM card number and IMEI are shown on the display.
How is recharge performed?
Remote recharge via the prepayment platform; balance can also be remotely cleared and the load remotely tripped.
What is the accuracy class?
Class 1.0 active-energy accuracy in accordance with the applicable GB/T or IEC standard.
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