SEM One
The first of its kind
SEM One is economical, simple and accurate. Measuring consumptions has never been so cost effective.
The king of submetering
SEM One is ideal for submetering applications where energy savings, costs distribution and quality measurement are key factors of an installation. In short, energy efficiency.
Sometimes is better make it easy
SEM One reads 12 electrical parameters and no more, but you’ll have more than enough.
SEM One - Single phase Modbus energy meter
SEM One is a single-phase power analyzer that allows to monitor electrical parameters of your installation including energy, voltage, current, power and more. The design, of compact dimensions, allows that SEM One can be placed easily at any installation.
The devices has removal connectors for power supply (85-265 Vac), external current transformers (250 mA output) and RS-485 communications.
The communication of measured data works over Modbus RTU standard protocol.
SEM One - Single phase Modbus energy meter
- RS-485 slave
- Modbus RTU protocol
- Remote configuration
- Status LEDs
- Manual reset
- Compact dimensions. 1 DIN rail module
- 230 Vac input voltage
- PC self-extinguishing box
Single-phase split-core transformers
TRA1 20A
- Maximum current 20 A
- Secondary 250 mA
- Inner diameter 16 mm
- Class 3
TRA1 80A
- Maximum current 80 A
- Secondary 250 mA
- Inner diameter 10 mm
- Class 3
TRA1 100A
- Maximum current 100 A
- Secondary 250 mA
- Inner diameter 16 mm
- Class 3
TRA1 250A
- Maximum current 250 A
- Secondary 250 mA
- Inner diameter 25 mm
- Class 3
Single-phase closed core transformers
TRC1 20A
- Maximum current 20 A
- Secondary 250 mA
- Inner diameter 13 mm
- Class 0.5
TRC1 100A
- Maximum current 100 A
- Secondary 250 mA
- Inner diameter 12 mm
- Class 0.5
TRC1 250A
- Maximum current 250 A
- Secondary 250 mA
- Inner diameter 19 mm
- Class 0.5
SEM One - Single phase Modbus energy meter
Datasheet SEM One 
Manual SEM One 
User manual SEM One 
Single-phase split-core transformers
Manual TRA1 20A
Manual TRA1 80A
Manual TRA1 100A
Manual TRA1 250A
Single-phase closed-core transformers
Manual TRC1 20A
Manual TRC1 100A
Manual TRC1 250A