The ABB B ‑ (CMAR) is a compact, DIN‑rail mountable single-phase energy meter designed for residential and commercial use. Equipped with a backlit LCD and infrared communication, it measures active energy and supports configurable pulse output or alarm functions. Approved to MID Class B, it’s ideal for sub-metering, HVAC, and facility management.

Key Features:

• Model: B ‑ (ABB CMAR)

• Measurement: Single-phase active energy (direct connected)

• Rated Current:  A nominal; up to  A max

• Supply Voltage: – V; / Hz (range – V)

• Accuracy: Class B (±%, MID-certified)

• Display: ‑digit backlit LCD; shows energy, voltage, current, power, frequency; includes min/max recording, user alarms

• Outputs & Interface: configurable output (pulse or alarm), infrared port for external reading/commissioning (e.g., KNX)

• Mounting & Dimensions: DIN‑rail;  ×  ×  mm; . kg; ‑unit width

• Operating Conditions: – °C to + °C; IP housing; glass/PC front window

• Standards & Compliance: IEC ‑; MID; CE; RoHS; pulse output type S; ‑tariff metering

ABB – B21 111-100 (2CMA100149R1000) – 1-Phase LCD Energy Meter, 5 A – 65 A

ABB – B21 111-100 (2CMA100149R1000) – 1-Phase LCD Energy Meter, 5 A – 65 A