The Delta DPR48/30G is a 30A, -48VDC hot-swappable rectifier module designed for telecom power systems that use the Delta DPR rack-mount platform. As authorized distributors, we supply the DPR48/30G as a drop-in replacement or expansion module for existing Delta ESR-48V rectifier shelves, hybrid power cabinets and -48V DC bus installations across telecom base stations, edge data centres and industrial control sites.
If you are evaluating the DPR48/30G alongside Huawei R4850 or Vertiv R48 modules, the decision is usually driven by your existing cabinet platform. The DPR48/30G fits Delta DPR-series shelves and ESR-48V systems; it does not cross-fit Huawei TP48xxx or Vertiv NetSure 731 backplanes. For a full brand-by-brand mapping, see our 48V rectifier cross-reference chart.
Key features
- Output: -48V DC, 30A nominal (approx 1440W per module)
- Hot-swap: Yes — zero service interruption during module replacement
- Input range: Wide-range AC input (90–300 VAC class), suitable for unstable grid conditions common in Africa, Middle East and South America
- Power factor: Active PFC, PF ≥ 0.99 at rated load
- Cooling: Forced-air with intelligent fan speed control; low audible noise at partial load
- Monitoring: Digital control with CAN/RS485 communication to Delta supervision controller
- Parallel operation: Multiple DPR48/30G modules share load current evenly within a DPR shelf
- Protections: Output OVP, OCP, OTP, short-circuit; input surge protection
Specifications (typical)
The table below summarises the published specification envelope for the Delta DPR48/30G. For the exact datasheet and factory test report, request an RFQ from our team — we provide original documentation with every shipment.
| Parameter | Value |
|---|---|
| Model | Delta DPR48/30G |
| Output voltage | -48 VDC (adjustable float range, typically 42–58 VDC) |
| Output current | 30 A nominal |
| Output power | Approx 1440 W per module |
| Input voltage | 90–300 VAC (wide range) |
| Input frequency | 45–65 Hz |
| Power factor | ≥ 0.99 at ≥50% load |
| Efficiency (typical) | High-efficiency class (exact value from datasheet on request) |
| Cooling | Forced-air, variable-speed fan |
| Hot-swap | Yes (make-and-break contacts, less than 10 ms transfer) |
| Communication | CAN bus / RS485 to Delta controller |
| Compatible shelves | Delta DPR series, ESR-48V systems |
| Operating temperature | -40 °C to +75 °C (derated above 55 °C, exact curve from datasheet) |
| Mounting | Module-insert into DPR shelf backplane; 19-inch rack compatible |
| Certifications | CE, and region-specific marks (confirm per batch) |
| Warranty | Standard manufacturer warranty; BS Comtec provides full documentation |
Cabinet compatibility
The DPR48/30G is designed for Delta’s DPR-series rectifier shelves and ESR-48V power systems. It is not mechanically or electrically compatible with:
- Huawei TP48200B / TP48300B / TP48400B / TP48600B (uses R4850 series)
- Vertiv NetSure 731 A41 / A91 (uses R48 series)
- Eltek Flatpack2 shelves (uses Flatpack2 modules)
- ZTE ZXD2400 systems (uses ZXD2400 modules)
If your site already runs a Delta DPR shelf, the DPR48/30G is a direct plug-in. If you are migrating from another brand or building a greenfield site, choose the rectifier platform to match the cabinet and supervision controller you are standardising on. Our R4850 vs R48 selection guide covers the decision logic for the two dominant platforms; for Delta sites, the logic is the same — match the brand to the cabinet.
Typical applications
- Telecom base stations: -48V DC bus powering BTS radios, baseband units and transmission equipment in macro and small-cell sites
- Data centre standby: -48V DC UPS for edge data centres and telecom co-location rooms
- FTTH OLT sites: Powering optical line terminals at -48V in street cabinets and central offices
- Industrial control: -48V DC supply for PLC cabinets, SCADA remote terminals and process control panels
For a deep-dive into the telecom base station use case — including load sizing, N+1 redundancy planning and battery backup calculation — see our dedicated guide: Delta DPR48/30G for Telecom Base Station Power.
Ordering from BS Comtec
As authorized Delta distributors, we supply the DPR48/30G with:
- Original factory test report per module
- Full manufacturer warranty documentation
- Same-day dispatch from stock (Shenzhen warehouse) for standard quantities
- Worldwide shipping via DHL / FedEx / sea freight (CIF / FOB / EXW terms)
- Engineering support for shelf compatibility verification and N+1 redundancy planning
To request a quote, send your required quantity, destination country and any cabinet model number to our team via WhatsApp +86 135 8237 6986 or the contact form on this site. For project deployments (5+ modules), we also provide single-line diagram review and battery sizing support at no additional charge.
Q: What is the Delta DPR48/30G rectifier module?
The Delta DPR48/30G is a 30A, -48VDC hot-swappable rectifier module for Delta DPR-series telecom power shelves. It converts AC mains to regulated -48V DC, supports wide-range input (90-300 VAC), active PFC, and CAN bus monitoring. Typical output power is approximately 1440W per module. It is supplied by BS Comtec as an authorized Delta distributor with factory test reports and full warranty documentation.
Q: Is the Delta DPR48/30G compatible with Huawei or Vertiv cabinets?
No. The Delta DPR48/30G is designed exclusively for Delta DPR-series rectifier shelves and ESR-48V power systems. It does not fit Huawei TP48xxx cabinets (which use R4850 modules) or Vertiv NetSure 731 cabinets (which use R48 modules). The mechanical form factor, backplane pinout, and communication protocol are all brand-specific. If you need a cross-reference mapping across brands, see the 48V rectifier cross-reference chart.
Q: What is the typical efficiency of the DPR48/30G?
The Delta DPR48/30G is a high-efficiency rectifier module in the 30A class. Exact efficiency curves depend on load point and input voltage. As a general reference, modern Delta 30A-class rectifiers achieve peak efficiency above 94% at 50% load, with active PFC maintaining power factor above 0.99. For comparison, the 62.5A-class Huawei R4850G6 and Vertiv R48-3000E3 reach 96.5% peak; the 30A class is typically 1-2 percentage points lower due to the smaller power stage.
Q: How many DPR48/30G modules do I need for a typical telecom site?
Divide the peak DC load current by 30A (the rated output per module), then add at least one spare for N+1 redundancy. For example, a site drawing 45A at -48V needs two working modules (2 x 30A = 60A capacity); with N+1 redundancy, install three modules. The DPR shelf must have enough physical slots for the total count. For detailed sizing methodology including battery backup calculation and 5G load profiles, see our base station power guide or the 5G 48V power sizing guide.
Last updated: October 2026. Delta DPR48/30G distributed by BS Comtec from Shenzhen warehouse. Specifications subject to manufacturer updates; request latest datasheet for project-critical parameters.
