RS485 Modbus RTU
RS485 Modbus RTU reads bidirectional (import/export) energy registers for AMR, sub-metering and building energy management.
DDS353L-1 80 A Single-Phase DIN-Rail MID Sub-Billing Energy Meter with RS485
DDS353L-1 is a single-phase two-wire DIN-rail energy meter with a clear LCD display, direct-connected up to 80 A with Class B accuracy. It measures imported and exported energy with RS485 Modbus RTU communication for AMR and sub-metering. MID B+D certified by SGS UK for legal sub-billing.
DIN-Rail Mounting
1P2W Direct Connection
MID B+D Certified
MID
80 A Maximum current (Imax)
230 V Rated voltage
Class B Active energy accuracy
−40°C to +70°C Operating temperature
Product Highlights
Bidirectional DIN Rail Metering with RS485 Modbus
Class B Active Energy Accuracy
Class B active energy accuracy meets EN 50470-3 for reliable, MID-compliant single-phase measurement.
Bidirectional Import/Export Metering
Measures both imported and exported energy for residential solar and net-metering applications.
LCD 5+3 Display
5+3-digit LCD reads to 99999.999 kWh with a red pulse indicator for visual consumption feedback.
Low Start Current
0.004 Ib starting current captures small standby and low-load consumption for accurate billing.
IP51 Indoor Enclosure
IP51-rated enclosure resists dust and condensation for indoor panel installation.
Applications
Applications and Selection Guidance
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Branch metering for buildings, factories, tenants and energy allocation.
Explore ApplicationTechnical Specifications
Technical Specifications
| Voltage connection | Direct connection |
| Rated voltage | 230 V |
| Frequency | 50–60 Hz |
| Current connection | Direct connection |
| Rated current | 0.25–5(30/32/40/45/50/80) A |
| Start current | 0.004 Ib |
| Impulse constant | 1000 imp/kWh |
| Power consumption | ≤12 VA / ≤1 W |
| Active energy accuracy | Class B |
| Communication interface | RS485 |
| Protocol | Modbus RTU |
| Display | LCD 5+3 (99999.999 kWh) |
| Pulse indicator | Red LED |
| IP rating | IP51 (indoor) |
| Installation | 35 mm DIN rail, 2-module (36 mm) |
| Dimensions | 100 × 36 × 65 mm |
| Operating temperature | −40°C to +70°C |
| Humidity | 75% average, 95% maximum |
| Applicable standards | IEC 62052-11, IEC 62053-21, EN 50470-1/3 |
Structure & Dimensions
DDS353L-1 Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is DDS353L-1?
DDS353L-1 is a single-phase DIN-rail MID-certified energy meter with RS485 Modbus RTU communication, direct-connected up to 80 A, measuring imported and exported energy.
What connection type does DDS353L-1 use?
Direct connection, single-phase two-wire (1P2W), rated up to 80 A.
What energy does DDS353L-1 measure?
Both imported and exported energy, supporting bidirectional (import/export) metering.
What communication protocols does DDS353L-1 support?
What communication protocols does DDS353L-1 support?
What is the accuracy class?
Class B active-energy accuracy in accordance with EN 50470-3.
What is the certification status?
MID B+D certified by SGS UK, suitable for legal sub-billing.
Product Downloads
Product Datasheet Download
Datasheet
DDS353L Series Product Datasheet
Official DDS353L Series datasheet covering product overview, specifications, wiring and dimensions.
Download PDF- Product overview and features
- Technical specifications
- Wiring diagrams and dimensions
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