SO Pulse Output
SO pulse output provides a wired pulse interface for remote meter reading and energy monitoring integration.
DDS353F-R-I 50 A Single-Phase DIN-Rail MID Sub-Billing Energy Meter
DDS353F-R-I is a single-phase two-wire DIN-rail energy meter with a clear LCD display, direct-connected up to 50 A with Class B accuracy. It measures kWh net (import − export), imported/exported energy, voltage, current, active power, frequency and power factor. MID B+D certified by SGS UK for legal sub-billing.
DIN-Rail Mounting
1P2W Direct Connection
MID B+D Certified
MID
50 A Maximum current (Imax)
230 V Rated voltage
Class B Active energy accuracy
−25°C to +55°C Operating temperature
Product Highlights
Compact DIN Rail Metering for Reliable Sub-Billing
Class B Active Energy Accuracy
Class B active-energy measurement in accordance with EN 50470-3 for reliable sub-billing applications.
Bidirectional Energy Measurement
Measures both imported (consumed) and exported (generated) energy, supporting sub-billing in solar PV and net-metering applications.
Full Electrical Parameter Measurement
Displays voltage, current, active power, frequency and power factor alongside energy readings for complete load monitoring.
LCD Display
5+2-digit LCD shows up to 99999.99 kWh for easy, unambiguous reading of accumulated energy.
Low Start Current
0.004 Ib start current delivers sensitive measurement even at very low loads.
Applications
Applications and Selection Guidance
EV Charging Metering
Solutions for AC/DC charging, billing and charging platform integration.
Explore ApplicationSolar PV & ESS Metering
DC/PV monitoring for inverters, storage systems and distributed energy monitoring.
Explore ApplicationC&I Sub-Metering
Branch metering for buildings, factories, tenants and energy allocation.
Explore ApplicationTechnical Specifications
Technical Specifications
| Voltage connection | Direct connection |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current connection | Direct connection |
| Rated current | 0.25–5(30/32/40/45/50) A |
| Start current | 0.004 Ib |
| Impulse constant | 1000 imp/kWh |
| Power consumption | 10 VA / 1 W |
| Active energy accuracy | Class B (EN 50470-3) |
| Pulse output | SO pulse output |
| Metering function | Measures active energy (import and/or export) with optional electrical parameters, per model variant |
| Measurement / LCD display | kWh net (import − export), imported/exported energy, voltage, current, active power, frequency and power factor |
| Display | LCD 5+2 digits (99999.99 kWh) |
| Environment class | M1 (mechanical) / E2 (electromagnetic) |
| Operating temperature | −25°C to +55°C |
| Average humidity | ≤75% (non-condensing) |
| Maximum humidity | ≤95% |
| Mounting | DIN-rail mounting |
| Wiring configuration | Single-phase two-wire (1P2W), direct connection |
| Applicable standards | EN 50470-1 / EN 50470-3 |
Structure & Dimensions
DDS353F-R-I Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is DDS353F-R-I?
DDS353F-R-I is a single-phase DIN-rail MID-certified energy meter measuring kWh net (import − export), imported/exported energy, voltage, current, active power, frequency and power factor.
What connection type does DDS353F-R-I use?
Direct connection, single-phase two-wire (1P2W), rated up to 50 A.
What energy does DDS353F-R-I measure?
Both imported and exported energy.
What electrical parameters does DDS353F-R-I display?
Voltage, current, active power, frequency and power factor, in addition to energy readings.
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
DDS353 Series Product Datasheet
Official DDS353 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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