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
Enclosure
NEMA 1, 0.75 in NPT hub
Warranty
10 years
Functional Devices RIBTPM413-BC BACnet Power Meter in NEMA 1 Housing
The Functional Devices RIBTPM413-BC is a revenue-grade, 4-quadrant BACnet MS/TP energy sub-meter factory-mounted in a NEMA 1 housing with a 0.75 in NPT hub, for single-phase and three-phase circuits from 120 to 277 Vac line-to-neutral. It carries the same metering electronics as the open-board RIBPM413-BC: self-powered from Line 1 to Neutral at under 2 VA, compatible with any UL or ETL Listed 333 mV current transformer, and bidirectional for NET metering. The housing measures 4.28 x 7.00 x 2.00 inches and ships with an MT212-6 mounting track.
Choose the RIBTPM413-BC where the metering point calls for an enclosed device with a conduit connection rather than an open track-mount board — near panelboards, in mechanical rooms, or wherever the installing contractor wants the wiring landed through the NPT hub. On the network it behaves identically to the RIBPM413-BC: BACnet Protocol Revision 14, B-ASC profile, and the full object map of voltage, current, power, energy, power factor, and demand points documented in Bulletin B2646.
Specifications verified against the Functional Devices RIBTPM413-BC datasheet (rev. 2026.02.25), Installation Bulletin B2646 (393290), and BACnet PICS v1.00 (April 9, 2020).
Best For
- Enclosed sub-metering near panelboards where conduit must land on the meter
- Tenant and departmental energy metering on a BACnet building automation system
- NET metering on circuits with on-site generation (solar, cogeneration)
- Retrofits where revenue-grade accuracy is specified but a bare board is not acceptable
Every Functional Devices RIB product, including the RIBTPM413-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 RIBTPM413-BC ships as genuine, factory-warranted product with full manufacturer support.
Key Features
Factory-Mounted NEMA 1 Housing
The metering board arrives installed in a 4.28 x 7.00 x 2.00 in NEMA 1 housing with a 0.75 in NPT hub, so field wiring lands through conduit and the electronics stay protected. An MT212-6 mounting track is provided.
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, resolving consumed and generated energy in active and reactive terms.
Self-Powered From the Metered Circuit
Draws under 2 VA from Line 1 to Neutral — no external power supply or control transformer. 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.
Works With Any Listed 333 mV CT
Compatible with all UL or ETL Listed 333 mV current transformers, including Functional Devices' 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, so utility-style reconciliation is available straight from BACnet.
Technical Specifications
| Functional Devices RIBTPM413-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 | 4.28 in H x 7.00 in W x 2.00 in D with 0.75 in NPT hub |
| Mounting | MT212-6 mounting track provided |
| Enclosure Rating | NEMA 1 |
| Approvals | CE, UL Listed, UL 61010-1 and UL 61010-2-30, C-UL, RoHS, FCC Part 15 Class B (circuit board) |
| 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 | |
| Net Metering | Bidirectional; net and split import/export energy registers |
Documentation
Specifications cutsheet, rev. 2026.02.25
Installation, wiring, LED definitions, and BACnet object map (393290)
PICS v1.00 for the RIBPM413-BC metering board, Protocol Revision 14
Related Products
The same revenue-grade metering board as an open 2.75 in track-mount device for installation inside an existing enclosure or panel.
A complete prewired metering package: meter, disconnect switch, Class CC fuse holder, and fuses in an 18-gauge steel NEMA 1 enclosure.
Compatible Split-Core CTs (333 mV)
All eight split-core models terminate directly on the RIBTPM413-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
How is the RIBTPM413-BC different from the RIBPM413-BC?
The metering electronics and BACnet behavior are the same. The RIBTPM413-BC adds a factory-mounted NEMA 1 housing with a 0.75 in NPT hub for conduit connection, measuring 4.28 x 7.00 x 2.00 inches, where the RIBPM413-BC is an open track-mount board.
Does the RIBTPM413-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 RIBTPM413-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.
- Revenue Grade:
- Yes
- Communication:
- BACnet MS/TP
- Current Input:
- 333 mV
- Phases:
- Single or Three Phase
- Mounting:
- Track
- Enclosure:
- NEMA 1 Housing
