ABB B Series DIN-rail energy meters include B21 for single-phase direct connection, B23 for three-phase direct connection, and B24 for three-phase current-transformer connection. Use the verified model and order-code references below to identify the meter for your enquiry. Connection type, communication and metering functions must be checked against the complete product code.
B21, B23 & B24 Selection
ABB B21 Energy Meters
Single-phase direct connection, up to 65 A. Two DIN modules.
ABB B23 Energy Meters
Three-phase direct connection, up to 65 A. Four DIN modules.
ABB B24 Energy Meters
Three-phase CT connection. Four DIN modules. Check the CT and meter requirements before selection.
Modbus RTU, M-Bus, accuracy, tariff functions and certification depend on the exact model. Direct-connected and CT-connected meters have different installation requirements; check the full model and system configuration before ordering.
ABB B Series Models & Order Codes
The following models are verified in the linked ABB catalogue. This reference list does not cover every B Series variant or indicate stock or availability. For a model not listed, send the complete type code or a nameplate photo for checking.
Request a quote with the model, ABB order code, quantity and destination country.
| Product Model | ABB Order Code | Connection | Functionality Level | Wired Communication |
|---|---|---|---|---|
| B21 311-100 | 2CMA100154R1000 | Single-phase direct | Silver | — |
| B21 312-100 | 2CMA100155R1000 | Single-phase direct | Silver | Modbus RTU |
| B21 313-100 | 2CMA100156R1000 | Single-phase direct | Silver | M-Bus |
| B23 311-100 | 2CMA100168R1000 | Three-phase direct | Silver | — |
| B23 312-100 | 2CMA100169R1000 | Three-phase direct | Silver | Modbus RTU |
| B23 313-100 | 2CMA100170R1000 | Three-phase direct | Silver | M-Bus |
| B24 111-100 | 2CMA100177R1000 | Three-phase CT | Steel | — |
| B24 112-100 | 2CMA100178R1000 | Three-phase CT | Steel | Modbus RTU |
| B24 113-100 | 2CMA100179R1000 | Three-phase CT | Steel | M-Bus |
| B24 212-100 | 2CMA100180R1000 | Three-phase CT | Bronze | Modbus RTU |
| B24 352-100 | 2CMA100183R1000 | Three-phase CT | Silver | Modbus RTU |
| B24 353-100 | 2CMA100184R1000 | Three-phase CT | Silver | M-Bus |
“—” means no wired protocol is listed in the catalogue communication column; an IR port is listed separately. Functionality Level is ABB’s catalogue designation. Confirm the functions and certification required for the exact order code.
Downloads & Technical References
ABB Energy Meters Catalogue (PDF) — includes B21, B23 and B24 ordering references on printed pages 10, 20 and 25, alongside other ABB energy-meter families.
Request a Quote
Send the full product model, ABB order code or article number, quantity and destination country. Include the phase configuration, system voltage, direct or CT connection, required communication and certification. For CT-connected meters, provide the CT ratio and secondary rating. For an existing installation, attach a nameplate photo and connection details.