ABB – 2CSM170040R1021 (DMTME) – 96 × 96 mm Panel Multimeter with RS‑485 Modbus

The ABB 2CSM170040R1021, also known as the DMTME, is a versatile 96 × 96 mm digital panel multimeter designed for advanced power monitoring in industrial and utility environments. Featuring True RMS measurement, a bright LED display, RS‑485 Modbus communication, and configurable outputs, it delivers precise analysis of electrical parameters for both single‑phase and three‑phase systems.  

Key Features:

• Model: 2CSM170040R1021 (DMTME multimeter)

• Display: Four red LED displays—three for phase values, one for system totals  

• Electrical Measurement:

  • Voltage: 10–500 V

  • Current: via external 5 A CT

  • Power (active, reactive, apparent), power factor, frequency

  • True RMS accuracy, Class 1  

• Functions: MIN/MAX/MEAN values, automatic CT/VT ratio calibration, scan keys for phase/system view  

• Communication & Outputs (DMTME‑I‑485): RS‑485 Modbus‑RTU (galvanically isolated); 2 galvanically isolated outputs configurable for pulses (kWh/kVArh) or alarms  

• Supply Voltage: 100–120 V AC or 230 V AC; power consumption ~6 VA  

• Operating Range: 0–50 °C; IP20 housing; DIN EN 50022 (35 mm rail)  

• Dimensions & Weight: 96 × 96 × 103 mm panel cutout; ~0.4 kg