Quick Facts
Meter Class
Revenue grade, 4-quadrant
Communication
BACnet MS/TP (native)
Voltage Range
120-277 Vac L-N, CAT III
CT Input
333 mV, UL/ETL Listed CTs
Power Source
Self-powered, < 2 VA
Warranty
10 years
Functional Devices RIBPM413-BC BACnet Power Meter
The Functional Devices RIBPM413-BC is a revenue-grade, 4-quadrant BACnet MS/TP energy sub-meter for single-phase and three-phase circuits from 120 to 277 Vac line-to-neutral. It powers itself from the metered circuit (Line 1 to Neutral, under 2 VA), works with any UL or ETL Listed 333 mV current transformer, and mounts on the included MT212-4 track in a footprint of just 2.75 x 4.5 inches. Once the MS/TP trunk is terminated, the meter is discovered on the BAS controller like any other BACnet device and serves voltage, current, power, energy, power factor, and demand objects directly to the front end.
Because the RIBPM413-BC is bidirectional, it handles NET metering: consumed energy accumulates as positive values and generated energy as negative, with separate import and export registers for both active and reactive energy. Automatic correction for reversed field CTs removes the most common commissioning callback, and up to three like loads can be metered on one device by paralleling CT sets. The meter complies with the Buy American provisions of ARRA Section 1605 as stated in Bulletin B2646.
Specifications verified against the Functional Devices RIBPM413-BC datasheet (rev. 2026.02.19), Installation Bulletin B2646 (393290), and BACnet PICS v1.00 (April 9, 2020).
Best For
- Tenant and departmental electrical sub-metering tied into a BACnet building automation system
- Measurement and verification on retrofits where revenue-grade accuracy is specified
- NET metering on circuits with on-site generation (solar, cogeneration)
- Panel-level demand monitoring using the built-in 15-minute total active demand objects
Every Functional Devices RIB product, including the RIBPM413-BC, is backed by the company's 10-year warranty — confidence and peace of mind in every box.
ZOT Supply is an authorized Functional Devices distributor. Every RIBPM413-BC ships as genuine, factory-warranted product with full manufacturer support.
Key Features
Revenue-Grade, 4-Quadrant Accuracy
Voltage, current, and power are measured to 0.5% accuracy (under 0.2% typical across the working range), with power factor to 0.5% between 0.5 and 1.0. As a 4-quadrant meter it resolves consumed and generated energy in both active and reactive terms.
Self-Powered From the Metered Circuit
The meter draws under 2 VA from Line 1 to Neutral — no external power supply, no control transformer, and one less point of failure. A neutral connection is required for input power.
Native BACnet MS/TP
BACnet Protocol Revision 14, B-ASC profile, with baud rates from 9600 to 115200 set over the network. Defaults ship as Device ID 277050, MAC 50, 38400-N-8-1, and the PIC statement documents every AI, AV, and demand object.
Works With Any Listed 333 mV CT
Compatible with all UL or ETL Listed 333 mV current transformers, including Functional Devices' own split-core, solid-core, and Rogowski (with MOD converter) CT lines. Automatic correction handles field CTs installed in reverse.
Bidirectional NET Metering
Net counters accumulate consumption as positive and generation as negative, while split counters report total import and export energy separately (EnergyP_Tot_Imp / EnergyP_Tot_Exp), so utility-style reconciliation is available straight from BACnet.
Up to Three Loads on One Meter
Parallel up to three like-rated CT sets to meter multiple loads at once; phase current reads as the sum per phase, scaled by the CT_Secondary (AV-8006) object per Bulletin B2646.
Technical Specifications
| Functional Devices RIBPM413-BC Specifications | |
|---|---|
| General | |
| Power Input Rating | Powered from Line 1 to Neutral, 120-277 Vac, < 2 VA; neutral connection required |
| Frequency | 50/60 Hz |
| Headers | Pluggable screw terminals, accept up to 12 AWG stranded copper wire |
| Operating Temperature | -4 to 158 °F |
| Storage Temperature | -40 to 185 °F |
| Humidity | 5 to 95% RH (noncondensing) |
| Altitude | Up to 2,000 m; indoor use only |
| Dimensions | 2.75 in H x 4.5 in W x 0.85 in D with headers installed |
| Mounting | MT212-4 mounting track provided |
| Approvals | CE, UL Listed, UL 61010-1 and UL 61010-2-30, C-UL, RoHS, FCC Part 15 Class B |
| Metered Circuit | |
| Voltage Range | 120-277 Vac L-N (CAT III); 1-phase 2/3-wire, 3-phase 4-wire |
| Voltage Overload | 1.1 x voltage range |
| Voltage Burden | < 0.1 VA at 277 Vac |
| Frequency Range | 45-65 Hz |
| Current Overload | 1.2 x CT output |
| Power Overload | 1.2 x voltage range x CT output |
| Current Transformer Input | 333 mV output CTs (UL or ETL Listed) |
| Measurement Accuracy | |
| Voltage | 0.5%, < 0.2% typical from 80-120% |
| Current | 0.5%, < 0.2% typical from 10-120% |
| Power | 0.5%, < 0.2% typical from 10-120% |
| Power Factor | 0.5% between 0.5 and 1.0 |
| BACnet | |
| Protocol | BACnet MS/TP, Protocol Revision 14, B-ASC profile |
| Defaults | Device ID 277050; MAC address 50; 38400 baud, N-8-1 |
| Baud Rates | 9600, 19200, 38400, 57600, 76800, 115200; set via BACnet |
| Network Media | 18-22 AWG, 2-core, shielded twisted pair; polarity sensitive |
| Network Termination | 120 ohm resistor at end-of-line device (see Bulletin B2646) |
| Commissioning Note | CT-Ratings object (AV-8005) must be set to the rating of the installed CTs |
| Compliance | |
| Buy American | Complies with Buy American provisions of ARRA Section 1605 (per Bulletin B2646) |
| Net Metering | Bidirectional; net and split import/export energy registers |
Documentation
Specifications cutsheet, rev. 2026.02.19
Installation, wiring, LED definitions, and BACnet object map (393290)
PICS v1.00, Protocol Revision 14
C2775E — compatible CT-, CTS-, ROPE-, and MOD-series selection
Related Products
The same meter prewired in an 18-gauge steel NEMA 1 enclosure with disconnect switch, Class CC fuse holder, and 2 A fuses — the code-required overcurrent protection and disconnect, done for you.
The same metering board factory-mounted in a NEMA 1 housing with a 0.75 in NPT hub for conduit connection where an open track-mount board is not appropriate.
Compatible Split-Core CTs (333 mV)
All eight split-core models terminate directly on the RIBPM413-BC CT inputs; size to the metered load and set CT-Ratings (AV-8005) to match.
Rogowski Coils for Large Services (4,000-10,000 A)
For mains and switchgear beyond split-core ratings, wrap a ROPE-series coil around the conductor — then add the matching MOD integrator below.
MOD-Series Integrators for ROPE Coils
A MOD integrator converts the ROPE coil's 70 mV output to the 333 mV standard this meter accepts; choose by phase count (12 or 24 Vdc powered).
Frequently Asked Questions
Does the RIBPM413-BC need an external power supply?
No. It powers itself from the metered circuit, drawing under 2 VA from Line 1 to Neutral. A neutral connection is required, so supported services are 1-phase 2-wire, 1-phase 3-wire, and 3-phase 4-wire from 120 to 277 Vac line-to-neutral.
Which current transformers work with this meter?
Any UL or ETL Listed 333 mV output current transformer. Functional Devices' CT series (25 A through 600 A split-core, solid-core models, and ROPE Rogowski coils with a MOD converter) are drop-in choices. After installation, write the CT rating to the CT-Ratings object (AV-8005) so readings scale correctly.
Is the RIBPM413-BC revenue grade?
Yes. Functional Devices documents it as a revenue-grade, 4-quadrant sub-meter, with 0.5% accuracy on voltage, current, and power (under 0.2% typical across the stated working ranges) and 0.5% power factor accuracy between 0.5 and 1.0.
Can it measure energy flowing in both directions?
Yes. The meter is bidirectional for NET metering. Net energy registers accumulate consumption as positive and generation as negative, and split registers (for example EnergyP_Tot_Imp and EnergyP_Tot_Exp) report import and export totals separately.
How does it connect to my building automation system?
Over BACnet MS/TP using 18-22 AWG shielded twisted pair. Defaults are Device ID 277050, MAC address 50, and 38400-N-8-1; all parameters are changed over BACnet. If the meter is the end-of-line device on the trunk, terminate B(+) to A(-) with a 120 ohm resistor.
Can one meter measure more than one load?
Yes, up to three like loads by paralleling CT sets of the same rating and manufacturer. Measured phase current is the sum of the loads on each phase, and the CT_Secondary object (AV-8006) is set to the CT rating multiplied by the number of CT sets.
What protection does the installation require?
Bulletin B2646 calls for Listed 2 A fast-blow fuses between the voltage inputs and the metered load, plus a Listed 600 V circuit breaker or disconnect switch marked as the disconnect device. The RIBPM413-BC-KIT packages this protection prewired.
- Revenue Grade:
- Yes
- Communication:
- BACnet MS/TP
- Current Input:
- 333 mV
- Phases:
- Single or Three Phase
- Mounting:
- Track
- Enclosure:
- Open Board
