ANMA System Building

Identity

category	smart_meters
compatibility_note	'The SMA Energy Meter 20 is fully compatible with the previous version and can be used in all existing application without limitation' (sma.de product page, referring to the EMETER-10 -> EMETER-20 transition)
ean	UNKNOWN
generation	20
manufacturer	SMA
market_version	EU (CE)
model	SMA Energy Meter (EMETER-20 / EMETER-US)
mpn	EMETER-20
product_family	SMA Energy Meter (EMETER-10 predecessor, EMETER-20 current)
product_revision	UNKNOWN
product_status	active
region	EU (EMETER-20). The EMETER-US variant named in the record model could NOT be verified from any document fetched this session.
release_year	UNKNOWN
sku	UNKNOWN
type_designation	EMETER-20

Electrical

ct_ratio	N/A (direct-connect, no CTs)
electrical_extra	{'nominal_voltage': '230 V / 400 V (datasheet); 110/230/400 VAC (installation manual technical data)', 'frequency': '50 Hz / 60 Hz (+/-5%)', 'nominal_current_a': 5, 'limiting_current_per_line_conductor_a': 63, 'start_up_current': '< 25 mA', 'self_consumption_w': '< 3 (datasheet) / 2 (installation manual)', 'measurement_accuracy': "'Measurement accuracy, measuring cycle 1%, 1000 ms'", 'measured_values': "'calculates phase-exact and balanced electrical measured values' covering 'data on grid feed-in and purchased electricity as well as PV generation'"}
export_limitation_support	True
max_current_a	63
measurement_type	direct
modbus_rtu	False
modbus_tcp	via ecosystem only - meter uses proprietary SMA Speedwire (Ethernet); paired Sunny Home Manager 2.0 exposes a documented Modbus interface
phase_type	three-phase (also usable on single-phase installations)
rs485	False
supported_inverter_brands_models	['SMA inverters via Sunny Home Manager 2.0 / ennexOS Data Manager']

Physical / mechanical

depth_mm	65
din_rail_type	top-hat rail (DIN rail); 'Hook the Energy Meter into the top edge of the top-hat rail and press down until it snaps into place.'
enclosure_material	UNKNOWN
height_mm	88
housing_color	UNKNOWN
module_width	Top-hat-rail width units 4 SMA Energy Meter - Datasheet — Technical data, 'Top hat-rail width units 4'
mounting_type	['DIN-rail']
screw_sizes	UNKNOWN
shipping_weight_kg	UNKNOWN
terminal_locations	line-conductor measuring terminals plus one RJ45 network socket
torque_specs	screw terminals 2.0 Nm (datasheet) / 2 Nm (installation manual) SMA Energy Meter - Datasheet — Technical data, 'Torque for screw terminals 2.0 Nm'; installation manual states 'Tightening torque: 2 Nm'
weight_kg	0.3 SMA Energy Meter - Datasheet — Technical data, 'Weight 0.3 kg'
width_mm	70 SMA Energy Meter - Datasheet — Technical data, 'Dimensions (W/H/D) 70 mm/88 mm/65 mm'

Installation

circuit_protection	'Protect the line conductors of the Energy Meter with a fuse or a main/selective circuit breaker, max. 63 A.' SMA Energy Meter - Installation manual — Connection chapter
conductor_cross_section	without current transformers: 10 mm2 to 16 mm2; with current transformers: 10 mm2 to 25 mm2 SMA Energy Meter - Installation manual — Terminal specifications
indoor_outdoor	indoor (distribution board; IP20 / IP2X)
max_installation_altitude_m	2000
mounting_orientation	top-hat rail mounting in household distribution board
network_requirement	'Speedwire' communication uses multicasts and requires 'IGMP protocol from version 2' on the local network
surface_requirements	top-hat (DIN) rail
wiring_topologies	three-phase 4-wire (TN/TT grids), single-phase 2-wire, and delta/IT networks

Environment

cooling_method	natural convection (passive)
ik_rating	UNKNOWN
ip_rating	IP20 (installation manual) / IP2X according to IEC 60529 (datasheet) SMA Energy Meter - Datasheet — Technical data, 'Degree of protection (according to IEC 60529) IP2X'
max_altitude_m	0 to 2000 (elevation above MSL)
nema_rating	UNKNOWN
noise_level_db	none
operating_temperature_c	-25 to +40 SMA Energy Meter - Datasheet — Technical data, 'Ambient temperature -25 degC to +40 degC'
pollution_degree	UNKNOWN
relative_humidity	5% to 90% (non-condensing, max. permissible)
storage_temperature_c	-25 to +70

Interfaces & connectors

bluetooth	False
can	False
cellular	False
cloud_api	Sunny Portal
ethernet	1x RJ45, 10/100 Mbit/s - 'Connection to the local router via Ethernet cable (10/100 Mbit/s, RJ45 plug)' SMA Energy Meter - Datasheet — Technical data, 'Connection to the local router via Ethernet cable (10/100 Mbit/s, RJ45 plug)'
local_api	UNKNOWN
modbus_rtu	False
modbus_tcp	not provided by the meter. The Sunny Home Manager 2.0 Modbus interface (SMA document HM-20-Modbus-NSD-TI-en-12) states 'The Modbus interface can only be used via the Modbus TCP protocol', default port 502 (alternatives 49152-65535), Unit ID 1 = Sunny Home Manager, Unit ID 2 = plant-level parameters, Unit IDs 3-247 = individual devices. That document does not mention the Energy Meter.
protocol_notes	Communication is SMA Speedwire over Ethernet using multicast; the COM LED indicates 'Speedwire connection established'.
rs485	False
sunspec	UNKNOWN
usb	False
wifi	False
zigbee	False

Controls & display

buttons	UNKNOWN
display_type	none
leds	2 LEDs ('Status display 2 LEDs'). Status LED: 'Glowing green: Energy Meter is switched on. Flashing green slowly: Energy Meter starting up.' COM LED: 'Off: no Speedwire connection established. Glowing green: Speedwire connection established.' SMA Energy Meter - Installation manual — LED indicators chapter
local_display	False
mobile_app	UNKNOWN
touchscreen	False
web_interface	via Sunny Portal / Sunny Home Manager

Protection

integrated_breakers_fuses	none - external fuse or main/selective circuit breaker max. 63 A required
overvoltage_category	UNKNOWN
protection_class	II (protection class according to IEC 62103)

Certifications

emc	[]
grid_codes	[]
metering	[]
note	The fetched datasheet and installation manual reference further certificates at www.SMA-Solar.com but do not enumerate them; no metering-accuracy standard identifier (e.g. EN 50470) was quoted in either fetched document.
other	[]
regional	['CE']
safety	['IEC 62103 (protection class II)', 'IEC 60529 (degree of protection IP2X)']

Warranty & service

conditions	Datasheet row 'Warranty 2 years'
design_life_years	UNKNOWN
standard_years	2 SMA Energy Meter - Datasheet — Technical data, 'Warranty 2 years'

Documents

datasheet SMA Energy Meter - Datasheet rev EMETER-20-DS-en-30

installation-manual SMA Energy Meter - Installation manual rev EMETER-20-IA-en-16 | Version 1.6

modbus-manual SUNNY HOME MANAGER 2.0 - Modbus interface for grid management services (Technical Information) rev HM-20-Modbus-NSD-TI-en-12

product-page SMA product page - SMA Energy Meter rev UNKNOWN

Recorded conflicts

environment.ip_rating Review required

IP2X (according to IEC 60529) — SMA Energy Meter datasheet EMETER-20-DS-en-30

IP20 — SMA Energy Meter installation manual EMETER-20-IA-en-16 v1.6, technical data summary

IP2X and IP20 are the same finger-protection class expressed with and without a moisture digit

electrical_extra.self_consumption_w Review required

< 3 W — SMA Energy Meter datasheet EMETER-20-DS-en-30

2 W — SMA Energy Meter installation manual EMETER-20-IA-en-16 v1.6

typical vs maximum figure, or document revision

electrical_extra.nominal_voltage Review required

230 V/400 V — SMA Energy Meter datasheet EMETER-20-DS-en-30, Inputs, fetched 2026-09-02

110/230/400 VAC — SMA Energy Meter installation manual EMETER-20-IA-en-16 v1.6, technical data, fetched 2026-09-02

the installation manual states the full supported voltage range including 110 V systems while the datasheet quotes the nominal European values