SO Pulse Output
SO pulse output provides a wired pulse interface for remote meter reading and energy monitoring integration.
DDS353AF 50 A Single-Phase DIN-Rail MID Sub-Billing Energy Meter
DDS353AF 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 total (import only). 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.
Import Energy Measurement
Measures imported (consumed) energy for straightforward consumption billing where no export or generation is present.
Dedicated kWh Measurement
A focused kWh-only configuration optimized for simple consumption and generation sub-billing, delivering cost-effective energy metering.
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.
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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 total (import only) |
| 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
DDS353AF Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is DDS353AF?
DDS353AF is a single-phase DIN-rail MID-certified energy meter measuring kWh total (import only).
What connection type does DDS353AF use?
Direct connection, single-phase two-wire (1P2W), rated up to 50 A.
What energy does DDS353AF measure?
Imported (consumed) energy only.
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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