by Simex

SNA-L70 is an innovative instrument for measurement of the electrical parameters. It is particularly suitable for consumption analysis and control, with an excellent quality/price ratio.
For the version with Rogowski coils (RGW model), connections are very quick and easy, very useful for retrofitting applications on existing switchboards or for energy audit.
SNA-L70 is the ideal instrument to establish the measurement points on the plant.
The instrument can communicate through the RS-485 serial port by MODBUS RTU/ASCII protocol.



Voltage range: self-powered model: 3 x 180/310 ÷ 3 x 285/495 VAC; auxiliary power supply (AUX) model: 3 x 10/17 ÷ 3 x 285/495 VAC; current: 6A (SNA-L70-111), 80A (SNA-L70-211), 3 selectable scales, 500/4000/20000A, Rogowski coils (SNA-L70-RGW); digital: active optoisolated, voltage range for DMD synchronisation: 80 ÷ 276 VAC

Power supply

self-powered model: 180 ÷ 285V AC, 50/60 Hz; auxiliary power supply (AUX) model: 85 ÷ 265V AC, 50/60 Hz

Power consumption

self-powered model: 3,5 VA ÷ 1 W for each phase; auxiliary power supply (AUX) model: 1,6 VA ÷ 1 W


digital: passive optoisolated; self-powered model: 250 VAC/DC - 100 mA; auxiliary power supply (AUX) model: 27 VDC - 27 mA

Protection class

IP 51 (frontal part), IP 20 (terminals)

Operating temperature

-25°C ÷ +55°C


backlighted LCD, 3 rows, 4 digits + symbols


max. 436 g

Communication interface

RS-485 optoisolated, Modbus RTU/ASCII


voltage: ±0,2% reading in 10% FS...FS range; current: ±0,4% reading in 5% FS...FS range; power: ±0,5% reading ±0,1% FS (PF=1); frequency: ±0,1% reading ±1 digit in 45...65 Hz range; active energy: Class 1 according to IEC/EN 62053-21; reactive energy: Class 2 according to IEC/EN 62053-23

Storage temperature

-25°C ÷ +75°C

Case dimensions

72 x 90 x 65 mm


DIN TS-35 mounting

Relative humidity

80% max without condensation