

Deye BOS-B-PDU-2-A BMS Control Box for BOS-B Battery System
The BOS-B-PDU-2-A is the high-voltage control box that manages a Deye BOS-B battery cluster: it collects the data from each module BMS, operates the DC breaker, handles insulation monitoring and emergency shutdown, and talks to the PCS. Without this unit the cluster cannot be connected to the inverter.
It is built for commercial and industrial installations, storage rooms and peak-shaving systems. It works with BOS-B-Pack14.3 modules (51.2V, 280Ah, 14.3kWh), 5 to 15 in series for a cluster up to 215kWh at 768V, and with Deye three-phase C&I PCS and inverters. An LCD display, status LEDs and Bluetooth app access make field diagnostics straightforward.
Key features
Technical specifications
| Feature | Value |
|---|---|
| Product code | BOS-B-PDU-2-A |
| Function | High-voltage control box (master BMS + PDU) for BOS-B clusters |
| DC operating voltage | 200–1000V DC |
| Cluster nominal voltage | 768V DC (15 modules in series) |
| Nominal charge/discharge current | 168A |
| Recommended current | 140A |
| DC breaker | 1000V / 168A, manual operation |
| AC auxiliary supply | 220V AC ±10%, 2A, 50/60Hz |
| Communication | TCP/Ethernet, RS485, CAN |
| Display and indicators | LCD with SOC and fault codes, yellow high-voltage LED, red system alarm LED |
| Safety functions | EPO interface on COMM1, insulation and leakage monitoring |
| Compatible battery modules | BOS-B-Pack14.3 (51.2V, 280Ah, 14.3kWh), 5 to 15 in series |
| Ingress protection | IP20 |
| Operating temperature | -20 to +60 °C |
| Storage temperature | 0 to +35 °C |
| Humidity and altitude | 5–85% RH, ≤3000 m |
| Dimensions (W×D×H) | 788.6 × 526 × 167.2 mm |
| Weight | 32 kg |
| Certifications | CE, IEC 62619, IEC 62040, UN38.3 |
Documentation
PDFDatasheet Deye BOS-B C&I ESS SolutionOfficial manufacturer documentPDFDeye BOS-B datasheet (battery module and BMS)Official manufacturer documentPDFManuale utente Deye BOS-B (EN/DE)Official manufacturer documentInstallation and wiring must be carried out by qualified personnel in accordance with the applicable standards and the electrical design of the system.
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