ABB – B23 212‑100 (2CMA100166R1000) – 3‑Phase DIN‑Rail Energy Meter, 65 A

The ABB B23 212‑100 (2CMA100166R1000) is a compact, high-accuracy energy meter for direct-connected three-phase installations up to 65 A. Featuring a 6-digit backlit LCD, extensive electrical parameter monitoring, and a Modbus-RS485 interface, it’s ideal for commercial, residential, or industrial energy management. MID-certified for billing use and equipped with configurable pulse or alarm output.

 Key Features

• Model: B23 212‑100 (ABB P/N 2CMA100166R1000)  

• Connection: Direct‑connected, 3-phase (3- or 4-wire), up to 65 A

• Voltage Range: 220 – 240 V L‑N, 380 – 415 V L‑L, 50/60 Hz  

• Accuracy: MID Class B (~±1%) for active energy; Class 2 for reactive energy  

• Display: 6-digit back-lit LCD; shows energy, voltage, current, power, power factor, frequency per phase & total  

• Communication:

   – RS‑485 with Modbus RTU and infrared (for KNX module integration)  

• Pulse/Alarm Output: Configurable S0 pulse or alarm; supports up to 25 threshold/alarm settings  

• Operating Range: –40 °C to +70 °C; IP20 rating; DIN-rail mount, 4-module width  

• Dimensions: 70 mm width, 65 mm depth, 26.5 mm height  

• Certifications: IEC 50470‑1/3; MID, RoHS, CE; rated for direct billing applications